Journal of Polymer Science Part A: Polymer Chemistry

Cover image for Vol. 47 Issue 24

15 December 2009

Volume 47, Issue 24

Pages 6735–7095

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      A paradigm for the mechanisms and products of spontaneous polymerizations (pages 6735–6749)

      H. K. Hall Jr. and Anne Buyle Padias

      Article first published online: 6 NOV 2009 | DOI: 10.1002/pola.23651

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      In spontaneous vinyl and ring-opening copolymerizations, polar and resonance effects on the intermediates from bond-forming initiation offer a continuous spectrum of reactivities and polymer structures. The nature of the intermediate will vary from a highly reactive trans biradical, which initiates chain alternating copolymerization, to a cis/gauche zwitterion, which can initiate chain ionic homopolymerization, to an extremely stabilized zwitterion, which forms alternating copolymer by polycombination. This model embraces the existing literature for a wide variety of monomers and possesses predictive power. [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com.]

  2. Articles

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    1. Synthesis of polyester having sequentially ordered two orthogonal reactive groups by anionic alternating copolymerization of epoxide and bislactone (pages 6750–6757)

      Kazuya Uenishi, Atsushi Sudo and Takeshi Endo

      Article first published online: 5 NOV 2009 | DOI: 10.1002/pola.23714

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      A bislactone 1 underwent an imidazole-initiated alternating copolymerization with allyl glycidyl ether to give the corresponding linear polyester having sequentially ordered two orthogonal reactive groups, namely lactone and allyl moieties. The two reactive groups served as versatile reactive sites in the chemoselective modifications of the polyester. [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com.]

    2. Sequence analysis of glycolide and p-dioxanone copolymers (pages 6758–6770)

      A. Rodríguez-galán, L. Franco and J. Puiggalí

      Article first published online: 5 NOV 2009 | DOI: 10.1002/pola.23715

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      Microstructural analysis of glycolide and p-dioxanone copolymers prepared by a ring-opening polymerization was performed throughout the assignment of the multiple peaks appearing in their 1H NMR and 13C NMR spectra. Slight changes in monomer distribution and molecular weight account for the significant variation found in thermal properties of copolymers. Depolymerization and transesterification reactions occur at high temperature as detected by the apparition of signals corresponding to terminal groups and a new sequence involving a single glycolic acid unit linked to two p-dioxanone residues.

    3. Study of amino ligands fixation to macroporous supports and their influence on albumin adsorption (pages 6771–6782)

      Cesar G. Gomez and Miriam C. Strumia

      Article first published online: 5 NOV 2009 | DOI: 10.1002/pola.23717

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      The performance diffusion of a substrate through an adsorbent is governed by the support pore system. When a ligand with a large size is attached to the network surface, it is bonded mostly between wider pores. Its more external location in the network determines a faster interaction with the protein. On the other hand, a shorter separation among ammonium groups along the spacer arm results in a more successful protein adsorption, because a stronger electrostatic interaction power on the protein is attained. Clearly, the balance obtained between the pore system and the reagent molecular structure used in the formation of the amino ligand yields the most efficient BSA adsorption.

    4. Control of block copolymer morphology: An example of selective morphology induced by self-assembly formation condition (pages 6783–6788)

      Natthaporn Suchao-In, Hank De Bruyn, Sébastien Perrier and Suwabun Chirachanchai

      Article first published online: 5 NOV 2009 | DOI: 10.1002/pola.23718

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      Diblock copolymer, PNIPAAM-b-PDMAEA, induces molecular assembly at above CMT. The block copolymer absolutely performs micelles (∼50 nm) at basic condition. In acidic condition, the copolymer forms vesicles (∼250 nm) after slow heating but stepwisely forms micelles (∼50 nm) via fast heating and consequently turns to vesicles (∼200 nm) after a certain time passed (∼1 hr). [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com.]

    5. Synthesis and kinetic analysis of DPE controlled radical polymerization of MMA (pages 6789–6800)

      Ying-Da Luo and Wen-Yen Chiu

      Article first published online: 5 NOV 2009 | DOI: 10.1002/pola.23719

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      A living kinetic model of DPE controlled radical polymerization was first proposed and utilized to analyze our experimental results. The kinetic rate constants involved in the DPE mechanism were estimated. The rate constant k2, corresponding to the reactivation reaction of the DPE capped dormant chains, was found to be very small, that accounted for the constant molecular weight of polymers throughout the DPE controlled radical polymerization successfully.

    6. Ionic organic/inorganic materials. III. Stimuli responsive hybrid hydrogels based on oligo(N,N-dimethylaminoethylmethacrylate) and chloroalkyl-functionalized siloxanes (pages 6801–6813)

      Ecaterina Stela Dragan, Maria Cazacu and Alexandra Nistor

      Article first published online: 5 NOV 2009 | DOI: 10.1002/pola.23720

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      Novel cross-linked structures containing siloxane moieties as a hydrophobic component and organic sequences having ionic or ionizable groups as hydrophilic part have been prepared. The presence of the high polar groups makes these materials to swell in water behaving as ionic hybrid hydrogels. The swelling ability of the ionic hybrids has been designed by the hydrophile/hydrophobe balance and the reaction conditions.

    7. Functional and tuneable amino acid polymers prepared by RAFT polymerization (pages 6814–6826)

      Amanda C. Evans, Jared Skey, Megan Wright, Wenjun Qu, Courtney Ondeck, Deborah A. Longbottom and Rachel K. O'Reilly

      Article first published online: 5 NOV 2009 | DOI: 10.1002/pola.23721

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      In this article, the synthesis of two novel proline-functionalized monomers and their polymerization by reversible addition-fragmentation chain transfer (RAFT) using a novel trithiocarbonate chain transfer agent (CTA) are described. Both monomer and CTA syntheses are straight-forward and readily accessible. RAFT copolymerization of both bis- and mono-protected monomers with styrene produces copolymers with narrow molecular weight distributions and high conversions. Functional monomer incorporation is a reliable and highly tuneable process, providing polymers incorporating different loadings of proline-derived units. Such polymers are of significant interest on deprotection because of their potential organocatalytic activity and application in a wide range of areas.

    8. Synthesis of thermo-responsive 4-arm star-shaped porphyrin-centered poly(N,N-diethylacrylamide) via reversible addition-fragmentation chain transfer radical polymerization (pages 6827–6838)

      Shin-Ichi Yusa, Tastuya Endo and Masanori Ito

      Article first published online: 5 NOV 2009 | DOI: 10.1002/pola.23722

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      Thermo-responsive 4-arm star-shaped porphyrin-centered poly(N,N-diethylacrylamide) (TPP-PDEA) was synthesized via reversible addition-fragmentation chain transfer (RAFT) radical polymerization. The porphyrin cores were compartmentalized in PDEA shells in aqueous media. The star-shaped PDEA exhibits a lower critical solution temperature (LCST) in water. Interpolymer aggregation occurred due to the hydrophobic interactions of the dehydrated PDEA arm chains above the LCST. [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com.]

    9. Synthesis of hyperbranched degradable polymers by atom transfer radical (Co)polymerization of inimers with ester or disulfide groups (pages 6839–6851)

      Nicolay V. Tsarevsky, Jinyu Huang and Krzysztof Matyjaszewski

      Article first published online: 5 NOV 2009 | DOI: 10.1002/pola.23723

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      Degradable hyperbranched polymers with multiple alkyl halide chain ends were synthesized via a self-condensing vinyl polymerization approach using atom transfer radical polymerization and copolymerization of degradable inimers. One of the inimers contained the hydrolytically degradable ester group, and the other contained a reductively degradable disulfide group. The degradation of the hyperbranched (co)polymers derived from the former inimer was achieved by basic hydrolysis, and of those derived from the latter – by reduction with tributylphosphine. [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com.]

    10. Visible light-induced living surface grafting polymerization for the potential biological applications (pages 6852–6862)

      Huadong Bai, Zhenhua Huang and Wantai Yang

      Article first published online: 5 NOV 2009 | DOI: 10.1002/pola.23724

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      The visible light-induced surface grafting polymerization, based on the isopropyl thioxanthone-semipinacol “dormant” groups from commercial photoinitiator isopropyl thioxanthone, is presented. With glycidyl methacrylate and low-density polyethylene films as models, the “living” feature of the surface grafting system was observed. The reaction exhibited kinetics and products in accord with the known characteristics of living polymerization rendered it possible to accurately control the thickness of the grafted layer by altering the irradiation time. Such surface grafting method could be potentially used for biosensitive materials where UV photografting cannot be used because of its strong denaturing action on biospecies. [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com.]

    11. RAFT cryopolymerizations of N,N-dimethylacrylamide and N-isopropylacrylamide in moderately frozen aqueous solution (pages 6863–6872)

      Xiao-Li Sun, Wei-Dong He, Jian Li, Li-Ying Li, Bo-Yu Zhang and Ting-Ting Pan

      Article first published online: 5 NOV 2009 | DOI: 10.1002/pola.23725

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      We investigated a new method, aqueous RAFT cryopolymerization, which is performed in concentrated unfrozen liquid microphase surrounded by ice crystals. The results of kinetic study and successful chain extension polymerization clearly demonstrated the well-controlled features of these RAFT cryopolymerizations. Cryogels with different porous structure were synthesized by the same method. [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com.]

    12. Synthesis and characterization of low-bandgap cyclopentadithiophene-biselenophene copolymer and its use in field-effect transistor and polymer solar cells (pages 6873–6882)

      Sang Kyu Lee, Nam Sung Cho, Shinuk Cho, Sang-Jin Moon, Jae Kwan Lee and Guillermo C. Bazan

      Article first published online: 5 NOV 2009 | DOI: 10.1002/pola.23726

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      Novel series of conjugated copolymers, incorporating cyclopentadithiophene (CPDT) and the biselenophene (R-CPDT-Se2), were newly synthesized, and their optical, electrochemical, field-effect carrier mobilities, and photovoltaic properties were investigated. The hole mobility of TFT device fabricated with new designed p-type polymer semiconductors, Oct-CPDT-Se2, was 1.3 × 10−3 cm2/Vs with an on/off ratio of about 105. The maximum PCE of polymer solar cell fabricated with the blend of EHex-CPDT-Se2/C71-PCBM reached 1.86%. [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com.]

    13. Peptide block copolymers by N-carboxyanhydride ring-opening polymerization and atom transfer radical polymerization: The effect of amide macroinitiators (pages 6883–6893)

      Gijs J. M. Habraken, Cor E. Koning and Andreas Heise

      Article first published online: 10 NOV 2009 | DOI: 10.1002/pola.23728

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      The ring-opening polymerization of various amino acids N-carboxyanhydrides with an amino-functionalized amide atom transfer radical polymerization (ATRP) initiator at low temperatures provides access to well-defined polypeptide macroinitiators. Subsequent ATRP produces the desired block copolymers but is prone to side reactions in the initiation phase resulting in nonreactive homopolymers.

    14. Organic–inorganic hybrid brushes consisting of macrocyclic oligomeric silsesquioxane and poly(ε-caprolactone): Synthesis, characterization, and supramolecular inclusion complexation with α-cyclodextrin (pages 6894–6907)

      Jin Han and Sixun Zheng

      Article first published online: 5 NOV 2009 | DOI: 10.1002/pola.23729

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      A macrocyclic oligomeric silsesquioxane (MOSS) bearing vinyl groups was prepared; it was further functionalized into cis-hexa[(phenyl) (2-hydroxyethylthioethyldimethylsiloxy)]cyclohexasiloxane via thiol-ene reaction. The organic-inorganic hybrid brushes were synthesized via the ring-opening polymerization of ε-caprolactone (CL) with the MOSS macromer as the initiator. These MOSS-PCL brushes were then used to prepare the supramolecular inclusion complexes with α-cyclodextrin (α-CD).

    15. Controlled synthesis of pH-responsive amphiphilic A2B2 miktoarm star block copolymer by combination of SET-LRP and RAFT polymerization (pages 6908–6918)

      Weidong Zhang, Wei Zhang, Jian Zhu, Zhengbiao Zhang and Xiulin Zhu

      Article first published online: 5 NOV 2009 | DOI: 10.1002/pola.23730

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      In this article, we have successfully obtained the spherical micelles composed of a hydrophobic core (PVAc) and a hydrophilic shell (PAA) through self-assembly of the well-defined pH-responsive amphiphilic A2B2 miktoarm star block copolymers, poly(acrylic acid16)2-poly(vinyl acetate44)2 prepared via a combination of SET-LRP and RAFT polymerization. The micelles were effective to pH value, and the sizes of the micelles can be adjusted by changing the pH value of the solution.

    16. Microwave-assisted nitroxide-mediated radical polymerization of acrylamide in aqueous solution (pages 6919–6931)

      Julien Rigolini, Bruno Grassl, Laurent Billon, Stephanie Reynaud and Olivier F. X. Donard

      Article first published online: 5 NOV 2009 | DOI: 10.1002/pola.23731

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      The SPS modes, which is a pulsed power mode, represents a superior mean of assuring microwave-assisted nitroxide-mediated (co)-polymerization in water at high conversion and low temperatures, i.e., below 90 °C, as measured with external IR sensors. [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com.]

    17. Long-chain branched ROMP polymers (pages 6932–6940)

      Stefan Hilf, Frederik Wurm and Andreas F. M. Kilbinger

      Article first published online: 5 NOV 2009 | DOI: 10.1002/pola.23733

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      ABn macromonomers can be prepared via ROMP using hydroxy-functional norbornene monomers and lactone quenching to functionalize the chain end with a carboxylic acid. Polycondensation of the macromonomers gives long chain hyperbranched olefin metathesis polymers. [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com.]

    18. Vinyl esters: Low cytotoxicity monomers for the fabrication of biocompatible 3D scaffolds by lithography based additive manufacturing (pages 6941–6954)

      Christian Heller, Martin Schwentenwein, Guenter Russmueller, Franz Varga, Juergen Stampfl and Robert Liska

      Article first published online: 5 NOV 2009 | DOI: 10.1002/pola.23734

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      Stereolithography has become an appealing method for the fabrication of 3D cellular scaffolds for tissue engineering and regenerative medicine. To circumvent the use of (meth)acrylate based photopolymers, that suffer from skin irritation and sometimes cytotoxicity, new monomers based on vinyl esters were prepared. The new materials showed similar results to (meth)acrylate references concerning the photoreactivity and mechanical properties, yet being significantly less cytotoxic. Finally, 3D test structures by μ-SLA out of vinyl ester based formulation could be fabricated and in vivo testing thereof proofed the biocompatibility of vinyl ester-based scaffolds. [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com.]

    19. Synthesis and characterization of fluid 1,3-benzoxazine monomers and their thermally activated curing (pages 6955–6961)

      Baris Kiskan, Banu Koz and Yusuf Yagci

      Article first published online: 5 NOV 2009 | DOI: 10.1002/pola.23735

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      Novel mono- and difunctional aliphatic oxyalcohol-based benzoxazines have been synthesized and characterized in detail. Molecular structures of the monomers were investigated by spectral analysis. The obtained benzoxazine monomers exhibit fluidic behavior, which makes them particularly useful for many applications compared to other traditional benzoxazines. This character makes them potential candidate for many practical applications. [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com.]

    20. Synthesis, self-assembly and drug-loading capacity of well-defined drug-conjugated amphiphilic A2B2 type miktoarm star copolymers based on poly(ε-caprolactone) and poly(ethylene glycol) (pages 6962–6976)

      Peng-Fei Gou, Wei-Pu Zhu, Ning Xu and Zhi-Quan Shen

      Article first published online: 6 NOV 2009 | DOI: 10.1002/pola.23736

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      Well-defined drug-conjugated amphiphilic A2B2 miktoarm star copolymers [(PCL)2-(PEG)2-D] were successfully synthesized by the combination of CROP and “click” chemistry. 1H NMR, FTIR, and SEC analyzes confirmed the designed structure. These copolymers could self-assemble into various morphologies in aqueous solution, which can be controlled by both the macromolecular architecture and the composition. Moreover, the drug-loading efficiency and drug-encapsulation efficiency of the drug-conjugated miktoarm star copolymers were significantly higher than those of the corresponding nondrug-conjugated miktoarm star copolymers. [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com.]

    21. Acid-base properties of poly(amidoamine)s (pages 6977–6991)

      Elisabetta Ranucci, Paolo Ferruti, Ettore Lattanzio, Amedea Manfredi, Manuela Rossi, Patrizia R. Mussini, Federica Chiellini and Cristina Bartoli

      Article first published online: 5 NOV 2009 | DOI: 10.1002/pola.23737

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      A homogeneous library of a series of PAAs has been built up, containing both the protonation constants and the average distribution of the charged species as a function of pH. The protonation constants have been precisely determined by electrochemical techniques. Correlations between chemical properties and cytotoxicity have been attempted. [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com.]

    22. Synthesis of novel polybenzimidazoles with pendant amino groups and the formation of their crosslinked membranes for medium temperature fuel cell applications (pages 6992–7002)

      Nan Xu, Xiaoxia Guo, Jianhua Fang, Hongjie Xu and Jie Yin

      Article first published online: 6 NOV 2009 | DOI: 10.1002/pola.23738

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      A series of novel organo-soluble polybenzimidazoles (PBIs) with pendant amino groups were synthesized from 5-aminoisophthalic acid, isophthalic acid, and 3,3′diaminobenzidine and various crosslinked PBI membranes with different crosslinking densities were fabricated by using 1,3-dibromopropane and ethylene glycol diglycidyl ether as the crosslinkers. Crosslinking greatly improved the mechanical properties of the phosphoric acid-doped membranes and the membranes with good mechanical properties and high-proton conductivities have been successfully developed.

    23. Synthesis of through-space conjugated polymers containing [2.2]paracyclophane and thieno[3,4-b]pyrazine in the main chain (pages 7003–7011)

      Lin Lin, Yasuhiro Morisaki and Yoshiki Chujo

      Article first published online: 6 NOV 2009 | DOI: 10.1002/pola.23739

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      New through-space conjugated polymers containing [2.2]paracyclophane and thieno[3,4-b]pyrazine units were synthesized by the Sonogashira–Hagihara coupling reaction. Pseudo-para- or pseudo-ortho-linked [2.2]paracyclophane was incorporated into the polymer chain. Their syntheses and optical and electrochemical behaviors were investigated in detail. [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com.]

    24. Kinetic studies of surface-initiated atom transfer radical polymerization in the synthesis of magnetic fluids (pages 7012–7020)

      Andreas Kaiser, Silvio Dutz and Annette M. Schmidt

      Article first published online: 6 NOV 2009 | DOI: 10.1002/pola.23740

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      We present results from kinetic studies on the surface-initiated atom transfer radical polymerization in the preparation of polymer brush-coated magnetic particles from a heterogeneous system. It is shown that a controlled reaction behavior and a reproducible surface functionalization with end-tethered polymers are achieved, although the reaction advances gradually from a biphasic solid–liquid mixture to a stable colloidal dispersion of the nanoobjects. We simultaneously monitor the monomer conversion, the molar mass of the polymer brush arms, the hydrodynamic diameter of the objects, and the magnetic content of the dispersions at different reaction times.

    25. Synthesis of high glass transition temperature copolymers based on poly(vinyl chloride) via single electron transfer—Degenerative chain transfer mediated living radical polymerization (SET-DTLRP) of vinyl chloride in water (pages 7021–7031)

      Jorge F. J. Coelho, Patrícia V. Mendonça, Anatoliy V. Popov, Virgil Percec, Pedro M. O. F. Gonçalves and Maria Helena Gil

      Article first published online: 2 NOV 2009 | DOI: 10.1002/pola.23741

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      α,ω-di(iodo) poly(isobornyl acrylate) have been used as a macroinitiator for the SET-DTLRP of vinyl chloride (VCM) leading to high Tg block copolymers PVC-b-PIA-b-PVC. The method proposed in this work is suitable to prepare high Tg block copolymers based on PVC in aqueous medium.

    26. LCST-type liquid–liquid and liquid–solid phase transition behaviors of hyperbranched polyglycerol bearing imidazolium salt (pages 7032–7042)

      Masaki Tamaki, Tsukasa Taguchi, Yoshikazu Kitajyo, Kenji Takahashi, Ryosuke Sakai, Toyoji Kakuchi and Toshifumi Satoh

      Article first published online: 6 NOV 2009 | DOI: 10.1002/pola.23743

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      A novel hyperbranched polyglycerol bearing imidazolium tosylate units (ITHB) was synthesized through the imidazolium salt-modification of hyperbranched polyglycerol (HB). In addition, the phase transition property of ITHB was investigated in organic media. ITHB was found to possess novel LCST-type liquid–liquid and liquid–solid phase transition behaviors, which were driven by the aggregation of ITHB and the cleavage of the solvation between the imidazolium rings and organic solvents, respectively. [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com.]

    27. A degradable, porous, emulsion-templated polyacrylate (pages 7043–7053)

      Yulia Lumelsky, Inbal Lalush-Michael, Shulamit Levenberg and Michael S. Silverstein

      Article first published online: 6 NOV 2009 | DOI: 10.1002/pola.23744

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      A degradable, porous, emulsion-templated polymer based on t-butyl acrylate and crosslinked with 50 wt % of a vinyl-terminated poly(ε-caprolactone) (PCL) oligomer was synthesized. The combination of t-butyl hydrolysis and PCL hydrolytic degradation resulted in a rapid disintegration of the macromolecular structure. This material exhibited enhanced cell adhesion, penetration, and growth, indicating that it is a suitable candidate for further research and development. [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com.]

    28. Sequential and localized grafting on aliphatic polyester diblock copolymers using alkyne deprotection and click cycloaddition (pages 7054–7065)

      Beth M. Cooper and Todd Emrick

      Article first published online: 6 NOV 2009 | DOI: 10.1002/pola.23745

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      The sequential polymerization of protected and unprotected alkyne functionalized lactones allows for the localized grafting of functional groups onto diblock aliphatic polyesters using click cycloaddition chemistry. Hydrophobic and hydrophilic functionalities were grafted to the polyesters to afford amphiphilic diblock structures. [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com.]

    29. Synthesis of twin-tail tadpole-shaped hydrophilic copolymers and their thermo-responsive behavior (pages 7066–7077)

      Li-Ying Li, Wei-Dong He, Jian Li, Shou-Chen Han, Xiao-Li Sun and Bo-Yu Zhang

      Article first published online: 6 NOV 2009 | DOI: 10.1002/pola.23746

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      Twin-tail tadpole-shaped polymers were synthesized via the combination of single-electron-transfer living radical polymerization and the click reaction under high polymer concentration without any inter-chain linear polymerization and the stoichiometric chemistry. Their thermo-responsive behaviors were quite different from their linear precursors and depended on PEG length. [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com.]

    30. Gelatin-based photopolymers for bone replacement materials (pages 7078–7089)

      Monika Schuster, Claudia Turecek, Guenter Weigel, Robert Saf, Juergen Stampfl, Franz Varga and Robert Liska

      Article first published online: 6 NOV 2009 | DOI: 10.1002/pola.23747

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      Within these studies, gelatin was modified with methacrylic groups to give a photopolymerizable derivative. Additionally, to allow a good compatibility with other (meth)acrylates-based comonomers, PEG-residues were introduced. Cell culture experiments with osteoblast- and endothelial-like cells confirmed negligible cytotoxicity of these monomers. Finally we were able to show the possibility of producing arbitrary cellular structures with these gelatin-containing formulations using stereolithography. [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com.]

  3. Rapid Communication

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    3. Articles
    4. Rapid Communication
    1. You have free access to this content
      Efficient and mild modification of Si surfaces via orthogonal hetero Diels-Alder chemistry (pages 7090–7095)

      Leena Nebhani, Peter Gerstel, Petia Atanasova, Michael Bruns and Christopher Barner-Kowollik

      Article first published online: 6 NOV 2009 | DOI: 10.1002/pola.23756

      Thumbnail image of graphical abstract

      Poly(isobornyl acrylate) carrying highly electron deficient dithioester end groups was conjugated to Si surfaces via a hetero Diels-Alder reaction between a diene which is immobilized on an Si surface and the dithioester polymer end group. These Si surfaces were utilized to create switchable surfaces via the hydrolysis of clicked poly(isobornyl acrylate) to poly(acrylic acid). The properties of the surface are investigated in detail. [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com.]

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