Journal of Polymer Science Part A: Polymer Chemistry

Cover image for Vol. 48 Issue 21

1 November 2010

Volume 48, Issue 21

Pages 4627–4908

  1. Articles

    1. Top of page
    2. Articles
    1. Synthesis and properties of mesogen-jacketed liquid crystalline polymers containing bistolane mesogen (pages 4627–4639)

      Zhen Lin Zhang, Lan Ying Zhang, Zhi Hao Shen, Guang Zhong Xing, Xing He Fan and Qi Feng Zhou

      Article first published online: 20 SEP 2010 | DOI: 10.1002/pola.24216

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      We synthesized a series of Mesogen-jacketed liquid crystalline polymers (MJLCPs) containing bistolane mesogen with large π-electron conjugation in the side chain. The polymer PMACn with shorter flexible substituents (n = 4) forms the columnar nematic (ϕN) phase, but other polymers with longer flexible tails (n = 6, 8, 10, and 12) can develop into a smetic A (SA) phase instead of a ϕN phase. The PMANC10 containing naphthyl can also form a well-defined SA phase.

    2. Rare earths/main group metal alkyls catalytic systems for the 1,4-trans stereoselective coordinative chain transfer polymerization of isoprene (pages 4640–4647)

      Andreia Valente, Philippe Zinck, Marta J. Vitorino, A. Mortreux and M. Visseaux

      Article first published online: 8 SEP 2010 | DOI: 10.1002/pola.24225

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      1,4-trans stereoselective coordinative chain transfer polymerization of isoprene is reported using a half-lanthanocene combined to dialkylmagnesium and alkylaluminum.

    3. Electrochemical synthesis of poly(3,4-ethylenedioxythiophene) nanotube arrays using ZnO templates (pages 4648–4653)

      M. Döbbelin, R. Tena-Zaera, P. M. Carrasco, J.-R. Sarasua, G. Cabañero and D. Mecerreyes

      Article first published online: 7 SEP 2010 | DOI: 10.1002/pola.24251

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      A new method toward vertically oriented poly(3,4-ethylenedioxythiophene) (PEDOT) nanotube arrays on transparent conductive oxide substrates is presented. The approach is based on the use of ZnO nanowire arrays as versatile template for the electropolymerization of PEDOT. Robust arrays of vertically oriented PEDOT nanotubes with different lengths and wall thicknesses were obtained by modifying the ZnO nanowire length and charge density passed during the electropolymerization, respectively. Furthermore, PEDOT nanotubes with different morphologies were successfully designed by varying the PEDOT electropolymerization kinetics or monomer diffusion or both. The photographs show SEM and TEM images of individual PEDOT nanotubes with nanostructured endings, which remind of a mushroom.

    4. Novel triarylamine-based alternating conjugated polymer with high hole mobility: Synthesis, electro-optical, and electronic properties (pages 4654–4667)

      Wen-Hsiang Chen, Kun-Li Wang, Wen-Yi Hung, Jyh-Chiang Jiang, Der-Jang Liaw, Kueir-Rarn Lee, Juin-Yih Lai and Ci-Liang Chen

      Article first published online: 7 SEP 2010 | DOI: 10.1002/pola.24252

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      Novel triarylamine-based conjugated polymers were prepared and characterized from new propeller-shaped bi-triphenylamine-containing dibromo monomers via Suzuki coupling. The hole mobility of the conjugated polymer P1 (R[DOUBLE BOND]H) was about 10−3 cm2 V−1 s−1, which is much higher than that of other conjugated polymer systems. This means that spatial hindrance have a crucial effect on the hole transport behavior. The conjugated polymer film P1 also exhibited good electrochromic properties with strong color changes from pale yellowish neutral to green and blue oxidized form under applied potentials ranging from 0.00 to 1.23 V.

    5. Synthesis of fluorinated polybenzoxazoles with low dielectric constants (pages 4668–4680)

      Liming Tao, Haixia Yang, Jingang Liu, Lin Fan and Shiyong Yang

      Article first published online: 20 SEP 2010 | DOI: 10.1002/pola.24253

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      This work deals with the synthesis of two novel bis(o-aminophenol) monomers, 6FAP and 9FAP, and the synthesis of high-fluorine-content polybenzoxazoles (FPBOs). Experimental results indicated that the FPBOs exhibited good thermal stability, with Tg of 315–337 °C. The FPBO films had low refractive indices of 1.5298–1.5656 and low dielectric constants of 2.57–2.70, which made them promising candidates for low-k polymeric materials for microelectronic packaging substrate applications.

    6. Regioregular poly(3-alkanoylthiophene): Synthesis and electrochemical, photophysical, charge transport, and photovoltaic properties (pages 4681–4690)

      Chao Wang, Felix S. Kim, Guoqiang Ren, Yongqian Xu, Yi Pang, Samson A. Jenekhe and Li Jia

      Article first published online: 20 SEP 2010 | DOI: 10.1002/pola.24254

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      Head-to-tail regioregular poly(3-heptanoylthiophene) (PHOT) has been synthesized and has a LUMO 0.5 eV lower in energy than that of regioregular P3HT.

    7. Synthesis and characterization of poly(isobutylene-co-isoprene)-derived macro-monomers (pages 4691–4696)

      Shude Xiao, J. Scott Parent, Ralph A. Whitney and Lisa K. Knight

      Article first published online: 7 SEP 2010 | DOI: 10.1002/pola.24256

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      Acrylate and styrenic functionalized isobutylene-rich elastomers are prepared and cured to high crosslink densities using comparatively small amounts of peroxide initiators.

    8. Decoration of Fe3O4 nanoparticles on the surface of poly(acrylic acid) functionalized multi-walled carbon nanotubes by covalent bonding (pages 4697–4703)

      Hongfu Zhou, Chen Zhang, Hangquan Li and Zhongjie Du

      Article first published online: 7 SEP 2010 | DOI: 10.1002/pola.24259

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      A novel nanostructure of Fe3O4-polymer-MWCNTs was proposed to increase the magnetic performance of multi-walled carbon nanotubes (MWCNTs)/Fe3O4 nanocomposites. The poly(acrylic acid) oligomer was grafted on the surface of acid-oxidized MWCNTs, forming numerous carboxyl groups from the original few hydroxyl groups on the surface of acid-treated MWCNTs. And then, Fe3O4 nanoparticles would react with PAA-g-MWCNTs by a reaction between the amino groups on the Fe3O4 nanoparticles and the carbonyl groups of the PAA. The results showed that abundant Fe3O4 nanoparticles were coated on the surface of PAA-g-MWCNTs via chemical bonds linkage and the resulting nanocomposites possessed high magnetic performance.

    9. Synthesis of polymers containing regularly distributed tetrathia-[7]-elicene units along the backbone (pages 4704–4710)

      Fabio Fenili, Clara Rigamonti, Alberto Bossi, Paolo Ferruti, Amedea Manfredi, Stefano Maiorana, Clara Baldoli, Silvia Cauteruccio, Emanuela Licandro and Elisabetta Ranucci

      Article first published online: 20 SEP 2010 | DOI: 10.1002/pola.24260

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      The synthesis of the new polymer 6, formed of alternating tetrathia-[7]-helicene and N,N′-bis(β-mercaptoethyl)piperazine units is described. The synthetic strategy used was the conjugated Michael addition of N,N′-bis(β-mercaptoethyl)piperazine to cyanovinyl substituted tetrathia-[7]-helicene 2. This is the first example of polymer material bearing helicene units regularly distributed along the polymer backbone. The optical properties, the film formation and the morphology of the polymer containing tetratia-[7]-helicenes are also reported.

    10. Synthesis and hydrolytic degradation of stereoregular aromatic poly(ester amide)s derived from D-xylose (pages 4711–4720)

      Inmaculada Molina Pinilla, Manuel Bueno Martínez and Juan A. Galbis

      Article first published online: 7 SEP 2010 | DOI: 10.1002/pola.24262

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      AA-BB type stereoregular poly(ester amide)s derived from D-xylose have been prepared by the solution polycondensation method. The polymers were hydrophilic and mainly amorphous. Their thermal properties and hydrolytic degradation have been studied.

    11. Hybrid organic/inorganic epoxy resins prepared by frontal polymerization (pages 4721–4725)

      Sergio Scognamillo, Valeria Alzari, Daniele Nuvoli and Alberto Mariani

      Article first published online: 7 SEP 2010 | DOI: 10.1002/pola.24263

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      For the first time, the frontal polymerization technique was exploited for the preparation of hybrid organic/inorganic epoxy resins. The relative ratios among the reactants that allow for the front to self-sustain were determined. It was found that, when relatively large amounts of inorganic component are present, two Tgs are exhibited. All samples were obtained in very short times and in quantitative conversion.

    12. Photoinitiated alternating copolymerization of dialkyl maleates and fumarates with vinyl ethers (pages 4726–4736)

      James V. Crivello and Thomas M. McGrath

      Article first published online: 7 SEP 2010 | DOI: 10.1002/pola.24264

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      The free radical photoinitiated alternating crosslinking copolymerizations of dialkyl maleates and furmarates with multifunctional vinyl ethers are fast and highly efficient when carried out using a variety of α-cleavage photoinitiators. The effects of the structures of the both the unsaturated esters and the vinyl ether monomers were examined and the prospects for the use of these comonomer systems in UV curable coatings, adhesives, printing inks and composites are discussed.

    13. Orthogonally functionalizable copolymers based on a novel reactive carbonate monomer (pages 4737–4746)

      Nergiz Cengiz, Halil Kabadayioglu and Rana Sanyal

      Article first published online: 7 SEP 2010 | DOI: 10.1002/pola.24265

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      A novel N-hydroxy succinimide (NHS)-based carbonate monomer that allows direct synthesis of polymers incorporating a reactive carbonate group in the side chain was synthesized and copolymerized with methyl methacrylate (MMA) and poly(ethylene glycol) methylether methacrylate (PEGMA) using free-radical polymerization to obtain organo- and water-soluble reactive copolymers. Copolymerization of the activated carbonate monomer with an azide-containing monomer and NHS-containing monomer N-hydroxysuccinimide methacrylate (NHSMA) provides orthogonally functionalizable copolymers where the pendant reactive carbonate groups were functionalized with amines to obtain carbamates. Polymers capable of orthogonal functionalization could be selectively functionalized as desired using subsequent 1,3-dipolar cycloaddition or amidation reactions.

    14. Red, green, and blue electrochromism in ambipolar poly(amine–amide–imide)s based on electroactive tetraphenyl-p-phenylenediamine units (pages 4747–4757)

      Li-Ting Huang, Hung-Ju Yen, Cha-Wen Chang and Guey-Sheng Liou

      Article first published online: 20 SEP 2010 | DOI: 10.1002/pola.24266

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      A series of poly(amine–amide–imide)s (PAAIs) based on tetraphenyl-p-phenylenediamine (TPPA) units showing electrochromic behaviors of three primary colors [red, green, and blue (RGB)] were prepared from the direct polycondensation of the TPPA-based diamine monomer with various aromatic bis(trimellitimide)s. The PAAI films revealed electrochemical oxidation and reduction accompanied with high contrast of optical transmittance color changes from the pale yellow neutral state to the RGB oxidized or reduced states. The electrochromic films had high-coloration efficiency, low-switching time, and good redox stability, which retained high electroactivity after long-term redox cycles.

    15. Facilitating polymer conjugation via combination of RAFT polymerization and activated ester chemistry (pages 4758–4767)

      Kerstin T. Wiss and Patrick Theato

      Article first published online: 20 SEP 2010 | DOI: 10.1002/pola.24267

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      This article demonstrates how a chain transfer agent (CTA) with an activated ester group enables the synthesis of well-defined polymers with diverse functional α-end-groups via two easy but very efficient methods, one being the synthesis of functional CTAs and the other being the conversion of the activated ester end-group after polymerization. High functionalization efficiencies could be obtained in the conversion of the activated ester into alkyne and azide groups, and the resulting polymers could be conjugated to each other successfully via CuAAC. Thus, this CTA allows for high combinatory flexibility in polymer synthesis via RAFT polymerization facilitating polymer conjugation.

    16. Preparation of high cis-1,4 polyisoprene with narrow molecular weight distribution via coordinative chain transfer polymerization (pages 4768–4774)

      Changliang Fan, Chenxi Bai, Hongguang Cai, Quanquan Dai, Xuequan Zhang and Fosong Wang

      Article first published online: 7 SEP 2010 | DOI: 10.1002/pola.24268

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      Coordinative chain transfer polymerization (CCTP) of isoprene has been performed by using homogeneous catalyst system composed of Nd(vers)3, Me2SiCl2 and alkylaluminum, and Al(i-Bu)2H as chain transfer agent (CTA). Almost sevenfold of polymer chains can be produced over that stoichiometrically calculated according to typical living polymerization. Swapping of the same type growing chains between the identical active sites and between growing chains and dormant chains attached to aluminum are believed to be the mechanism, by which the lengths of the polymer chains tend to be averaged, giving narrowly molecular weight distributed polyisoprene with high cis-1,4 configuration.

    17. Synthesis, photoluminescence, and electrochromism of polyamides containing (3,6-di-tert-butylcarbazol-9-yl)triphenylamine units (pages 4775–4789)

      Hui-Min Wang, Sheng-Huei Hsiao, Guey-Sheng Liou and Chieh-Hsiang Sun

      Article first published online: 7 SEP 2010 | DOI: 10.1002/pola.24269

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      A series of six novel aromatic polyamides 7a–7f with main-chain triphenylamine (TPA) and pendent 3,6-bis(tert-butyl)carbazole units were prepared from a newly synthesized dicarboxylic acid monomer, 4,4′-dicarboxy-4″-(3,6-di-tert-butylcarbazol-9-yl)TPA, and various aromatic diamines. These polyamides were amorphous with good solubility in many organic solvents and could be solution-cast into flexible and strong films. In addition to high Tg values and good thermal stability, the polyamides also revealed strong blue photoluminescence and good redox stability along with multielectrochromic behaviors.

    18. Oxidation of cellulose fibers mediated by nonpersistent nitroxyl radicals (pages 4790–4799)

      Gabriela Biliuta, Lidija Fras, Simona Strnad, Valeria Harabagiu and Sergiu Coseri

      Article first published online: 7 SEP 2010 | DOI: 10.1002/pola.24270

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      The regenerated cellulose fibers were oxidized, at room temperature, for 2 h, at pH = 10, by using three different non persistent nitroxyl radicals as mediators generate in situ. The oxidation degree depends on the nature of the nitroxyl radical used, thus a certain amount of carboxylic groups introduced in the original material can be checked by choosing a specific mediator.

    19. Proton-conductive polymer nanocomposite membranes prepared from telechelic fluorinated polymers containing perfluorosulfonic acid side chains (pages 4800–4810)

      Chalathorn Chanthad, Kui Xu, He Huang and Qing Wang

      Article first published online: 7 SEP 2010 | DOI: 10.1002/pola.24271

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      New classes of proton-conductive polymer nanocomposites have been synthesized via radical polymerization for the telechelic fluorinated polymers with perfluorosulfonic acids in the side chains and a subsequent in-situ sol-gel condensation of the triethoxylsilane-terminated fluorinated polymers with oxide precursors. The membrane properties such as water uptake, the state of the absorbed water, proton conductivity, and methanol permeability have been correlated to the concentration and structure of the polysilsesquioxane fillers.

    20. Well-defined amphiphilic poly(p-dioxanone)-grafted poly(vinyl alcohol) copolymers: Synthesis and micellization (pages 4811–4822)

      Gang Wu, Si-Chong Chen, Qi Zhan and Yu-Zhong Wang

      Article first published online: 20 SEP 2010 | DOI: 10.1002/pola.24272

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      The amphiphilic biodegradable and biocompatible poly(p-dioxanone)-grafted poly(vinyl alcohol) copolymers with well-defined structure were obtained by a three-step synthesis based on the “grafting from” concept. The results showed that the molecular structure of copolymer could be controlled easily by the degree of silylation and the feed ratio, and the micellization of copolymers could be formed in water. This copolymer has a potential use in biomedical applications.

    21. Synthesis and applications of low-bandgap conjugated polymers containing phenothiazine donor and various benzodiazole acceptors for polymer solar cells (pages 4823–4834)

      Harihara Padhy, Jen-Hsien Huang, Duryodhan Sahu, Dhananjaya Patra, Dhananjay Kekuda, Chih-Wei Chu and Hong-Cheu Lin

      Article first published online: 20 SEP 2010 | DOI: 10.1002/pola.24273

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      A series of soluble donor-acceptor conjugated polymers comprising of phenothiazine donor and various benzodiazole acceptors sandwiched between hexyl-thiophene linkers were designed, synthesized, and used for the fabrication of polymer solar cells. The best photovoltaic performance of PCE = 1.20% with Voc = 0.75 V, Jsc = 4.60 mA/cm2, and FF = 35.0% was obtained in the PSC device containing a polymer blend PP6DHTBT:PC71BM (1:4 w/w).

    22. Multiarm star polymers with POSS at the periphery (pages 4835–4841)

      Eda Gungor, Cigdem Bilir, Gurkan Hizal and Umit Tunca

      Article first published online: 20 SEP 2010 | DOI: 10.1002/pola.24275

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      Azide end-functionalized POSS molecule (POSS-N3) was incorporated into the periphery of well-defined alkyne-polystyrene50-poly(divinyl benzene) (alkyne-PS50-polyDVB) and alkyne-poly(tert-butyl acrylate)43-poly(divinyl benzene) (alkyne-PtBA43-polyDVB) multiarm star polymers via highly efficient azide-alkyne click reaction, resulting in POSS-PS50-polyDVB and POSS-PtBA43-polyDVB multiarm star block copolymers, respectively, in the solution of tetrahydrofuran (THF)/N,N-dimethylformamide (DMF), CuBr/N,N,N,N,N′-pentamethyldiethylenetriamine (PMDETA) at room temperature for 24 h.

    23. Multiarm star polymers with peripheral dendritic PMMA arms through Diels–Alder click reaction (pages 4842–4846)

      Hakan Durmaz, Aydan Dag, Ceyda Onen, Ozgul Gok, Amitav Sanyal, Gurkan Hizal and Umit Tunca

      Article first published online: 7 SEP 2010 | DOI: 10.1002/pola.24276

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      Dendritic 2- and 4-arm PMMA PMMA-based star polymers with furan-protected maleimide at their focal point, (PMMA)2n-MI and (PMMA)4n-MI, were efficiently clicked with the peripheral anthracene functionalized multiarm star polymer, (α-anthryl functionalized-polystyrene)m-poly(divinyl benzene) ((α-anthryl-PS)m-polyDVB) through the Diels–Alder reaction resulting in corresponding multiarm star block copolymers: (PMMA)2n-(PS)m-polyDVB and (PMMA)4n-(PS)m-polyDVB, respectively.

    24. Functionalization of carbon black nanoparticles with poly(vinylidene fluoride) (pages 4847–4854)

      Radovan Vukićević, Peter Hierzenberger, Sabine Hild and Sabine Beuermann

      Article first published online: 20 SEP 2010 | DOI: 10.1002/pola.24277

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      The surface of carbon black (CB) particles was functionalized with poly(vinylidene fluoride) (PVDF). Using PVDF with iodine end groups, a maximum of 18.2 wt % of polymer was attached to the CB surface in 62 h. A more efficient grafting process occurred when PVDF with azide end group was used. The reaction time was lowered to 4 h, and the maximum amount of polymer in the product was 22.9 wt %.

    25. Azide/alkyne-“click”-reactions on amino resin materials: An LC-ESI-TOF analysis (pages 4855–4866)

      Haitham Barqawi and Wolfgang H. Binder

      Article first published online: 20 SEP 2010 | DOI: 10.1002/pola.24278

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      A simple chemical modification of amino-resins with functional azides under aqueous conditions is reported using azide/alkyne-“click”-reactions. Alkyne-modified MF-resin compounds were generated as the product of a cocondensation process and fully characterized by ESI-TOF-MS, proving the covalent attachment of alkyne-moities in amounts of up to 3.9 mol %. Further modification of the alkyne-modified resins was carried out by reaction of functional azides (octyl azide, (azidomethyl)benzene, 1-(6-azidohexyl) thymine and 4-azido-N-(2,2,6,6-tetramethylpiperidin-4-yl)benzamide) with Cu(I)Br and DIPEA as a base. The formation of triazolyl-modified MF-resins was proven by LC-ESI-TOF methods, indicating the successful covalent modification of the amino-resin with the mentioned azides.

    26. Preparation, morphology, and biolabeling of fluorescent nanoparticles based on conjugated polymers by emulsion polymerization (pages 4867–4874)

      Rui Wang, Chao Zhang, Weizhi Wang and Tianxi Liu

      Article first published online: 20 SEP 2010 | DOI: 10.1002/pola.24279

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      The luminescent properties of the nanoparticles prepared by Suzuki coupling reaction with certain surfactants as a kind of special emulsion polymerization could be adjusted by selecting different monomers. Without using any heavy metal element, these fluorescent nanoparticles show very good biocompatibility with cells, thus showing potential applications in cell biolabeling, drug delivery tracing, organic light-emitting diodes, flat displays, and other areas.

    27. Random copolymers based on 3-hexylthiophene and benzothiadiazole with induced π-conjugation length and enhanced open-circuit voltage property for organic photovoltaics (pages 4875–4883)

      Jang-Yong Lee, Min-Hee Choi, Ho-Jun Song and Doo-Kyung Moon

      Article first published online: 20 SEP 2010 | DOI: 10.1002/pola.24280

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      A series of donor-acceptor low bandgap conjugated polymers, HThmBT (m = 3, 6, 9, 12, 15), were synthesized for low bandgap polymers with well-balanced energy levels by introducing the structural regularity and charge transport properties of poly(3-hexylthiophene) (P3HT) using the intramolecular charge transfer (ICT) effect of the D-A type polymers. HTh6BT exhibited the best device performance with a PCE of 1.6%. Moreover, despite being based on thiophene, HTh6BT exhibited a high open circuit voltage of over 0.8 V. I–V characteristics of photovoltaic devices that have HTh6BT/PC71BM blend films (polymer:PCBM = 1:3) as active layers.

    28. Copolymerization of methacrylic acid with methyl methacrylate by SET-LRP (pages 4884–4888)

      Sven Fleischmann and Virgil Percec

      Article first published online: 7 SEP 2010 | DOI: 10.1002/pola.24282

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      The copolymerization of methacrylic acid with methyl methacrylate was performed by SET-LRP in protic solvents at 50 °C. For low (2.5%) and moderate (10%) MAA concentrations, the polymerization followed first-order kinetics in monomer conversion and the molecular weight increased linearly with conversion providing narrow molecular weight distributions. The decrease in concentration of both, MMA and MAA, occurred simultaneously proving an even incorporation of the acid monomer in the growing chain. At high MAA loading (25%), a first-order kinetics dependency was detected with a reasonable control over the molecular weight.

    29. Set-LRP of MMA in acetic acid (pages 4889–4893)

      Sven Fleischmann and Virgil Percec

      Article first published online: 10 SEP 2010 | DOI: 10.1002/pola.24283

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      The SET-LRP of MMA was performed in protic media in the presence of acetic acid. TsCl was used as initiator and the reaction was conducted at 50 °C with varying amount of acetic acid. The kinetics of the polymerization process was studied and revealed a remarkable tolerance toward acidity. In the presence of acetic acid, the SET-LRP of MMA clearly showed the characteristics of a living polymerization, i.e., first order kinetic and linear evolution of the molecular weights from conversion. We demonstrated that the SET-LRP of MMA could be even successfully performed in acetic acid as solvent providing well-defined macromolecules.

    30. The effect of cucurbit[n]uril on the solubility, morphology, and the photophysical properties of nonionic conjugated polymers in an aqueous medium (pages 4894–4899)

      Dönüs Tuncel, Müge Artar and Saltuk Bugra Hanay

      Article first published online: 20 SEP 2010 | DOI: 10.1002/pola.24284

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      The effects of cucurbit[n]uril on the dissolution and the photophysical properties of nonionic conjugated polymer, namely, poly[9,9-bis{6(N,N-dimethylamino)hexyl}fluorene-co-2,5-thienylene (PFT), in an aqueous medium are described.

    31. Radical copolymerization of vinylidene cyanide with 2,2,2-trifluoroethyl methacrylate: Structure and characterization (pages 4900–4908)

      Mustapha Raihane, Valter Castelvetro, Sabrina Bianchi, Salima Atlas and Bruno Ameduri

      Article first published online: 23 SEP 2010 | DOI: 10.1002/pola.24285

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      A novel copolymer of 2,2,2-trifluoroethyl methacrylate (MATRIF) and vinylidene cyanide (VCN) was synthesized by free radical process. Its composition and microstructure were investigated by 13C- and 1H-NMR analysis, showing a preferential comonomer addition leading to a predominantly alternating structure in which VCN-VCN dyads are almost completely absent. Preliminary investigations on the thermal properties of poly(VCN-co-MATRIF) showed comparatively high glass transition temperature and thermal stability with respect to the parent homopolymers. These features are primary requirements for potential applications as dielectric material.