Journal of Polymer Science Part A: Polymer Chemistry

Cover image for Vol. 51 Issue 15

1 August 2013

Volume 51, Issue 15

Pages i–iv, 3081–3322

  1. Cover Image

    1. Top of page
    2. Cover Image
    3. Highlight
    4. Rapid Communication
    5. Articles
    1. You have free access to this content
      Cover Image, Volume 51, Issue 15 (pages i–ii)

      Article first published online: 21 JUN 2013 | DOI: 10.1002/pola.26809

      Thumbnail image of graphical abstract

      Synthesis, characterization, and polymerization of vinylimidazole based high-temperature ionic liquid asymmetric ion pair comonomers (IPCs) by different radical polymerization methods are presented by Satyasankar Jana, Vivek Arjunan Vasantha, Ludger Paul Stubbs, Anbanandam Parthiban, and Julius G. Vancso on page 3260. This investigation provides insights into the polymerization behavior of each individual component of asymmetric IPCs. The ionic interactions prevailing in the resultant copolymers are also discussed. The cover structures depict ionic interactions present in the polymers produced from asymmetric IPCs and the background image highlights the possible application of these materials for creating antifouling surfaces for marine environments similar to zwitterionic polymers.

    2. You have free access to this content
      Inside Cover, Volume 51, Issue 15 (pages iii–iv)

      Article first published online: 21 JUN 2013 | DOI: 10.1002/pola.26810

      Thumbnail image of graphical abstract

      Electrochemical polymerization in crystal followed by polymerization in cholesteric liquid crystal allows production of a crystal-liquid-crystal-ordered electro-optically active polymer. The polymer shows a photonic insect-like metallic reflection, and the metallic color is tunable via an electrochemical redox process, as presented by Hiromasa Goto on page 3097. The image is a triangle fingerprint texture prepared with phase transition sequential polymerization for obtaining a double-layer polythiophene consisting of crystal and cholesteric liquid crystal orders. The resultant polymer film displays metallic reflection electrochromism showing bronze, silver, and gold as structural colors.

  2. Highlight

    1. Top of page
    2. Cover Image
    3. Highlight
    4. Rapid Communication
    5. Articles
    1. You have free access to this content
      Copper-mediated controlled radical polymerization in continuous flow processes: Synergy between polymer reaction engineering and innovative chemistry (pages 3081–3096)

      Nicky Chan, Michael F. Cunningham and Robin A. Hutchinson

      Article first published online: 28 APR 2013 | DOI: 10.1002/pola.26711

      Thumbnail image of graphical abstract

      Copper-mediated controlled radical polymerization (CRP) has tremendous potential as a synthetic tool for value-added materials. Commercial viability of the technology hinges on decreasing production costs by reducing the concentration of copper metal used, and increasing production efficiency. In this highlight article, advancements in copper-mediated CRP chemistry and process development will be presented, with a particular focus on copper(0)-mediated CRP in continuous flow reactors as an environmentally friendly and economically viable platform for large-scale production of novel polymeric materials.

  3. Rapid Communication

    1. Top of page
    2. Cover Image
    3. Highlight
    4. Rapid Communication
    5. Articles
    1. You have free access to this content
      Crystal–liquid crystal ordered double layer electroactive polymer prepared with phase transition sequential polymerization, showing metallic electrochromism–bronze, silver, and gold (pages 3097–3102)

      Hiromasa Goto

      Article first published online: 16 MAY 2013 | DOI: 10.1002/pola.26729

      Thumbnail image of graphical abstract

      Electrochemical polymerization in crystal followed by polymerization in cholesteric liquid crystal allows production of a crystal–liquid crystal ordered electro-optically active polymer. The polymer shows photonic insect-like metallic reflection. The metallic color is tunable via an electrochemical redox process.

  4. Articles

    1. Top of page
    2. Cover Image
    3. Highlight
    4. Rapid Communication
    5. Articles
    1. Synthesis of homopolypeptides with PPII structure (pages 3103–3109)

      Charlotte Martin, Aurélien Lebrun, Jean Martinez and Florine Cavelier

      Article first published online: 22 APR 2013 | DOI: 10.1002/pola.26705

      Thumbnail image of graphical abstract

      Reported here are the synthesis and characterization of new homopolypeptides with PPII structure. These biopolymers were obtained by ring-opening polymerization of silaproline (silylated analogue of proline) N-carboxyanhydride. Homopolysilaprolines were characterized by NMR, MALDI-Tof and circular dichroism.

    2. Single-electron transfer-living radical polymerization of oligo(ethylene oxide) methyl ether methacrylate in the absence and presence of air (pages 3110–3122)

      Nga H. Nguyen, Xuefei Leng, Hao-Jan Sun and Virgil Percec

      Article first published online: 3 MAY 2013 | DOI: 10.1002/pola.26718

      Thumbnail image of graphical abstract

      Efficient SET-LRP of oligo(ethylene oxide) methyl ether methacrylate (OEOMA) in DMSO, and binary mixtures of DMSO with H2O in the absence and presence of air is reported. Both OEOMA and the initiator self-assemble in water into micellar aggregates and vesicles.

    3. Stabilization of the film morphology in polymer: Fullerene heterojunction solar cells with photocrosslinkable bromine-functionalized low-bandgap copolymers (pages 3123–3131)

      Deping Qian, Qi Xu, Xuliang Hou, Fuzhi Wang, Jianhui Hou and Zhan'ao Tan

      Article first published online: 11 APR 2013 | DOI: 10.1002/pola.26695

      Thumbnail image of graphical abstract

      Novel bromine-functionalized photocrosslinkable low-bandgap copolymers, PBDTTT-Br25 and PBDTTT-Br50, were synthesized via Stille cross-coupling polymerization for the purpose of stabilizing the film morphology in polymer solar cells (PSCs). The formation of large aggregations of fullerene was suppressed in polymer:fullerene blend films even after prolonged thermal annealing, and the stability of the device was enhanced when compared with cells based on noncrosslinkable PBDTTT. This approach paves a way toward solvent-robust and operation-stable PSCs.

    4. Birefringence control by hydrogen bonding on compatible polymer pair composed of hydrogenated ring-opening polymer and modified polystyrene (pages 3132–3143)

      Motoki Okaniwa, Naoyuki Kawashima, Michitaka Kaizu and Yasuaki Mutsuga

      Article first published online: 9 APR 2013 | DOI: 10.1002/pola.26697

      Thumbnail image of graphical abstract

      A new polymer blend composed of a hydrogenated ring-opening polymer with an ester group as positive polymer and hydroxyl functionalized polystyrene as negative polymer produced excellent transparent materials, which enabled precise birefringence control in keeping with the other physical properties for optical film use. The excellent transparency even above those of Tg was attributed to a depressed phase separation that resulted from the strong hydrogen bond between the ester and hydroxyl groups.

    5. Spotlight Article

      Preparation of novel cyclic olefin copolymer with high glass transition temperature (pages 3144–3152)

      Miao Hong, Guo-Fan Yang, Ying-Yun Long, Shijun Yu and Yue-Sheng Li

      Article first published online: 17 APR 2013 | DOI: 10.1002/pola.26699

      Thumbnail image of graphical abstract

      Novel cyclic olefin copolymers (COCs) with high glass transition temperature and high thermal stability have been successfully obtained in this work via effective copolymerization of ethylene and bulky cyclic olefin.

    6. Synthesis of poly(ethylene glycol)-based hydrogels and their swelling/shrinking response to molecular recognition (pages 3153–3158)

      Yuichi Tominaga, Takuya Kubo, Kenji Sueyoshi, Ken Hosoya and Koji Otsuka

      Article first published online: 19 APR 2013 | DOI: 10.1002/pola.26700

      Thumbnail image of graphical abstract

      Polyethylene glycol (PEG)-based hydrogels exhibit equilibrium swelling ratios that are changed by varying the length of PEG chains of PEG dimethacrylate, the functional monomer, the porogenic solvents, or its composition. Furthermore, the swelling/shrinking behaviors of PEG-based hydrogels are affected by the environmental condition of the aqueous solution; hydrogels were greatly shrunk (to one-fifth volume) using a di-ionic solute due to the ionic interaction toward ionic groups in the hydrogels. In addition, a specific shrinking behavior toward diamine compounds was also observed in response to pH change. In other words, the hydrogels are swelling/shrinking in response to pH and molecular recognition.

    7. Seleno-containing poly(vinyl acetate) prepared by diselenocarbonates-mediated controlled free radical polymerizations (pages 3159–3165)

      Fei Ma, Jian Zhu, Zhengbiao Zhang, Xiangqiang Pan, Nianchen Zhou and Xiulin Zhu

      Article first published online: 19 APR 2013 | DOI: 10.1002/pola.26701

      Thumbnail image of graphical abstract

      A novel organic selenium compound (diselenocarbonates) was successfully used as the RAFT agent for the polymerization of VAc, which provided the way for the incorporation of selenium into polymer in a controlled manner.

    8. Biomimetic design of amphiphilic polycations and surface grafting onto polycarbonate urethane film as effective antibacterial agents with controlled hemocompatibility (pages 3166–3176)

      Musammir Khan, Yakai Feng, Dazhi Yang, Wei Zhou, Hong Tian, Ying Han, Li Zhang, Wenjie Yuan, Jin Zhang, Jintang Guo and Wencheng Zhang

      Article first published online: 22 APR 2013 | DOI: 10.1002/pola.26703

      Thumbnail image of graphical abstract

      The controlled design of three series of antibacterial amphiphilic polycations, PTBAEMA, PTBAEMA-b-PEGMA, and PTBAEMA-co-PEGMA, was carried out by SET-LRP. Their antibacterial properties were evaluated against E. coli and expressed as MICs, while for the PCU-modified film surfaces, they were depicted as percent killing. Upon interaction with bacterial cells, these polycations mimic AMPs and cause disruption of cytoplasmic membranes. The biocompatibility against mammalian RBCs indicated that PEGMA protect mammalian cell membranes from severe action, also due to the lesser number of cationic charges on the surface. Therefore, these materials can serve as useful candidates in the future as pharmaceuticals.

    9. Brush macro-RAFT agent mediated dispersion polymerization of styrene in the alcohol/water mixture (pages 3177–3190)

      Xin Xiao, Shangjin He, Meihan Dan, Yang Su, Fei Huo and Wangqing Zhang

      Article first published online: 22 APR 2013 | DOI: 10.1002/pola.26704

      Thumbnail image of graphical abstract

      Well-controlled dispersion RAFT polymerization of styrene in an alcohol/water mixture mediated with the brush macro-RAFT agent of poly[poly(ethylene oxide) methyl ether vinylphenyl-co-styrene] trithiocarbonate is performed and various block copolymer nano-objects such as nanospheres, worms, vesicles, and large-compound-micelle-like particles are prepared.

    10. Spotlight Article

      Dendron–polymer conjugates via the diels–alder “click” reaction of novel anthracene-based dendrons (pages 3191–3201)

      Ozgul Gok, Sezin Yigit, Meliha Merve Kose, Rana Sanyal and Amitav Sanyal

      Article first published online: 19 APR 2013 | DOI: 10.1002/pola.26708

      Thumbnail image of graphical abstract

      Dendron–polymer conjugates derived from water-soluble and biocompatible polyethylene glycol polymers and biodegradable polyester dendrons were synthesized using the Diels–Alder “click” chemistry. Furan-protected maleimide containing end-functionalized polyethylene glycol (PEG) polymers were reacted with polyester dendrons containing an anthracene group at a focal point. The method provides facile preparation of multivalent PEG polymers amenable to further functionalization.

    11. Conventional radical polymerization and iodine-transfer polymerization of 4′-nonafluorobutyl styrene: Surface and thermal characterizations of the resulting poly(fluorostyrene)s (pages 3202–3212)

      Flavio Ceretta, Alessandro Zaggia, Lino Conte and Bruno Ameduri

      Article first published online: 3 MAY 2013 | DOI: 10.1002/pola.26712

      Thumbnail image of graphical abstract

      4′-Nonafluorobutyl styrene (1) was synthesized and polymerized by conventional and controlled radical polymerizations, namely iodine-transfer polymerization (ITP) in the presence of 1-iodoperfluorohexane. The kinetics of radical homopolymerization of (1) led to its kp2/kt value. Đ-values of these fluoropolymers were different (1.30 from conventional polymerization and 1.15 from ITP). Thermal properties and surface energies of these homopolymers achieved for both techniques were discussed and evidenced the influence of Đ-values on their surface properties.

    12. Amphiphilic depsipeptide-based block copolymers as nanocarriers for controlled release of ibuprofen with doxorubicin (pages 3213–3226)

      Li Zhang, Yakai Feng, Hong Tian, Miao Zhao, Musammir Khan and Jintang Guo

      Article first published online: 28 APR 2013 | DOI: 10.1002/pola.26713

      Thumbnail image of graphical abstract

      Well-defined amphiphilic multiblock copolymers PDMAEMA-b-P(IBMD-co-PDO)-b-PEG-b-P(IBMD-co-PDO)-b-PDMAEMA were successfully synthesized by combination of ring-opening polymerization (ROP) and atom transfer radical polymerization (ATRP). These multiblock copolymers could readily self-assemble into nanoscale-sized microspheres in PBS, and combined model drugs ibuprofen (IBU) with doxorubicin (DOX) were loaded successfully into these microspheres, which exhibited high LC, EE, and drug release behavior in PBS. It can be envisaged that these copolymer systems are promising candidates for controlled release applications.

    13. Polymerization of (E)-1,3-Pentadiene and (E)-2-methyl-1,3-pentadiene with neodymium catalysts: Examination of the factors that affect the stereoselectivity (pages 3227–3232)

      Giuseppe Leone, Antonella Caterina Boccia, Giovanni Ricci, Antonino Giarrusso and Lido Porri

      Article first published online: 28 APR 2013 | DOI: 10.1002/pola.26714

      Thumbnail image of graphical abstract

      (E)-2-Methyl-1,3-pentadiene (2MP) was polymerized with heterogeneous and homogeneous neodymium catalysts, obtaining isotactic and syndiotactic cis-1,4 polymers, respectively. A tentative interpretation is given for the mechanism of the formation of these stereoregular polymers and a complete NMR characterization of the cis-1,4-syndiotactic poly(2MP) is reported.

    14. Single-electron transfer-living radical copolymerization of butyl methacrylate and divinylbenzene for preparation of oil-absorbing gel (pages 3233–3239)

      Lijun Fan, Hou Chen, Gaojian Lv, Jinli Cao and Yidong Fu

      Article first published online: 3 MAY 2013 | DOI: 10.1002/pola.26715

      Thumbnail image of graphical abstract

      Crosslinking copolymerization of butyl methacrylate with a small amount of divinylbenzene was carried out using single-electron transfer-living radical polymerization initiated with CCl4 and catalyzed by Cu(0)/N-ligand in N,N-dimethylformamide to produce a highly oil-absorbing gel. The polymerization followed first-order kinetics for both linear and crosslinking polymerization before gelation. Under optimal conditions, oil absorption of the prepared gel to chloroform could reach 42.1 g·g−1.

    15. Well-defined thermoresponsive dendritic polyamide/poly(N-vinylcaprolactam) block copolymers (pages 3240–3250)

      Yunmei Bi, Caixian Yan, Lidong Shao, Yufei Wang, Yongcui Ma and Gang Tang

      Article first published online: 3 MAY 2013 | DOI: 10.1002/pola.26716

      Thumbnail image of graphical abstract

      Thermoresponsive amphiphilic linear–dendritic block copolymers, composed of hydrophilic poly(N-vinylcaprolactam) chains and hydrophobic dendritic aromatic polyamide, have been designed and prepared by reversible addition fragmentation chain transfer polymerization. Their lower critical solution temperatures (LCSTs) depend on the generation of the dendrons and the concentrations of the copolymer solutions. They are capable of self-assembling into nanospherical micelles in water. A sustained drug release is achieved from the copolymer micelles, which is accelerated when the environmental temperature is raised slightly above the LCST.

    16. Spotlight Article

      Isotactic poly(propylene-co-1-pentene-co-1-hexene) terpolymers: Synthesis, molecular characterization, and evidence of the trigonal polymorph (pages 3251–3259)

      Alberto García-Peñas, José M. Gómez-Elvira, Ernesto Pérez and María L. Cerrada

      Article first published online: 28 APR 2013 | DOI: 10.1002/pola.26717

      Thumbnail image of graphical abstract

      Poly(propylene-co-1-pentene-co-1-hexene) terpolymers are synthesized and polymerization activity is evaluated as well as the molecular characteristics of the resulting materials. Moreover, the trigonal polymorph is developed in those terpolymers with the highest overall comonomer content independently of the ratio between both comonomers. Crystallization kinetics is, however, slowed down as 1-hexene concentration is increased.

    17. Vinylimidazole-based asymmetric ion pair comonomers: Synthesis, polymerization studies and formation of ionically crosslinked PMMA (pages 3260–3273)

      Satyasankar Jana, Vivek Arjunan Vasantha, Ludger Paul Stubbs, Anbanandam Parthiban and Julius G. Vancso

      Article first published online: 15 MAY 2013 | DOI: 10.1002/pola.26720

      Thumbnail image of graphical abstract

      Three different vinylimidazole based asymmetric ion pair comonomers (IPCs) free from nonpolymerizable counter ions have been synthesized, characterized, and polymerized by different polymerization techniques including ATRP and RAFT. This investigation provides insight to the polymerization behavior of each individual component of these asymmetric IPCs and its effects on composition and solubility of polymer produced. The IPCs studied here are high temperature ionic liquids and the polymers synthesized from these IPCs are highly ionic in nature and possess very strong intermolecular interactions. This highly ionic interaction is exploited to synthesize ionically crosslinked PMMA.

    18. Synthesis and self-assembling of poly(N-isopropylacrylamide-block-poly(L-lactide)-block-poly(N-isopropylacrylamide) triblock copolymers prepared by combination of ring-opening polymerization and atom transfer radical polymerization (pages 3274–3283)

      Yanfei Hu, Vincent Darcos, Sophie Monge and Suming Li

      Article first published online: 16 MAY 2013 | DOI: 10.1002/pola.26721

      Thumbnail image of graphical abstract

      Novel thermo-responsive PNIPAAm-b-PLLA-b-PNIPAAm triblock copolymers were prepared by ATRP of NIPAAm with Br-PLLA-Br macroinitiator. Copolymers with excellent control over the molecular weight and narrow dispersity were obtained under mild condition. LCST was detected between 32.1 and 32.8 °C. Micelles are prepared by self-assembly of amphiphilic copolymers in aqueous medium. The micelles exhibit a thermo-responsive behavior, showing great potential as carrier of drugs.

    19. Access to nonisocyanate poly(thio)urethanes: A comparative study (pages 3284–3296)

      Vincent Besse, Gabriel Foyer, Rémi Auvergne, Sylvain Caillol and Bernard Boutevin

      Article first published online: 16 MAY 2013 | DOI: 10.1002/pola.26722

      Thumbnail image of graphical abstract

      Various bis(cyclic carbonates) were synthesized by thiol–ene coupling. Five- and six-membered cyclic carbonates and thiocarbonates were compared to yield nonisocyanate polyurethanes (PUs) with various amines. Synthesized PUs exhibit low Tg from −29 to 19 °C and high molar masses, which are interesting properties for coating applications.

    20. A new insight into the mechanism of 1,3-dienes cationic polymerization. II. Structure of poly(1,3-pentadiene) synthesized with tBuCl/TiCl4 initiating system (pages 3297–3307)

      Victor A. Rozentsvet, Nelly A. Korovina, Valentina P. Ivanova, Marianna G. Kuznetsova and Sergei V. Kostjuk

      Article first published online: 16 MAY 2013 | DOI: 10.1002/pola.26724

      Thumbnail image of graphical abstract

      Poly(1,3-pentadiene) synthesized by cationic polymerization of 1,3-pentadiene with tBuCl/TiCl4 initiating system contains only homo and mixed dyads with trans−1,4-, trans−1,2-, and cis−1,2-structures with regular and inverse (head-to-head or tail-to-tail) enchainment, whereas cis−1,4- and 3,4-units are totally absent.

    21. Temperature responsive copolymers of N-vinylcaprolactam and di(ethylene glycol) methyl ether methacrylate and their interactions with drugs (pages 3308–3313)

      Stefanie Zuber, Katharina Landfester, Daniel Crespy and Ana-Maria Popa

      Article first published online: 21 MAY 2013 | DOI: 10.1002/pola.26727

      Thumbnail image of graphical abstract

      N-Vinylcaprolactam and di(ethylene glycol) methyl ether methacrylate are copolymerized in high yield via miniemulsion polymerization. The lower critical solution temperature (LCST) of the obtained linear copolymers is controlled by their composition and the concentration of drugs in the solutions.

    22. Spotlight Article

      Facile one-pot method of initiator fixation for surface-initiated atom transfer radical polymerization on carbon hard spheres (pages 3314–3322)

      Muhammad Ejaz, Bhanukiran Sunkara, Lakhinder Kamboj, Jibao He, Vijay T. John, Noshir S. Pesika and Scott M. Grayson

      Article first published online: 21 MAY 2013 | DOI: 10.1002/pola.26728

      Thumbnail image of graphical abstract

      An atom transfer radical polymerization (ATRP) initiator has been chemically immobilized on the surface of carbon hard spheres (CHSs) in only one step by a radical trapping method. These initiator immobilized CHSs are used to graft polystyrene and poly(methyl methacrylate) chains via surface-initiated ATRP. The resultant grafted CHSs are covered by a dense uniform film of grafted polymers. The thickness of grafted polymer is controlled by tuning the amount of sacrificial free initiator during graft polymerization.

SEARCH

SEARCH BY CITATION