Journal of Polymer Science Part A: Polymer Chemistry

Cover image for Vol. 54 Issue 6

Impact Factor: 3.113

ISI Journal Citation Reports © Ranking: 2014: 18/82 (Polymer Science)

Online ISSN: 1099-0518

Associated Title(s): Journal of Polymer Science Part B: Polymer Physics

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  1. One-step synthesis of poly(lactic-co-glycolic acid)-g-poly-1-vinylpyrrolidin-2-one copolymers

    Elisabetta Ranucci, Giovanna Capuano, Amedea Manfredi and Paolo Ferruti

    Article first published online: 11 FEB 2016 | DOI: 10.1002/pola.28049

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    New amphiphilic poly(D,L-lactide-co-glycolide)-g-poly(1-vinylpyrrolidin-2-one) graft copolymers (PLGA-g-PVP) are synthesized by radical polymerization of 1-vinylpyrrolidin-2-one in molten PLGA 50:50 acting both as solvent and as polymer chain transfer agent. These copolymers and their saponification products are structurally characterized, demonstrating the occurrence of the PVP grafting reaction. In water, either PLGA-g-PVP or PLGA/PLGA-g-PVP blends give nanodispersions remarkably more stability than those obtained by the same procedure from PLGA/PVP blends of similar composition.

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    One-pot inimer promoted ROCP synthesis of branched copolyesters using α-hydroxy-γ-butyrolactone as the branching reagent

    Geng Hua, Johan Franzén and Karin Odelius

    Article first published online: 11 FEB 2016 | DOI: 10.1002/pola.28048

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    Facile ring-opening copolymerization is used for the synthesis of branched ɛ-caprolactone based copolyester using a biorenewable monomer α-hydroxy-γ-butyrolactone as branching reagent. The inimer is commercially available and is here proven to extend the current interest in utilizing 5-membered lactones to branched structures. The copolymerization kinetics of the branching monomer is thoroughly studied and upon successful polymerizations, branched polymers with melting temperature ranging from 55.8 to 26.1 °C are obtained.

  3. Poly(N-vinyl pyrrolidone)-block-Poly(N-vinyl carbazole)-block-poly(N-vinyl pyrrolidone) triblock copolymers: Synthesis via RAFT/MADIX process, self-assembly behavior, and photophysical properties

    Yixin Xiang, Houluo Cong, Lei Li and Sixun Zheng

    Article first published online: 11 FEB 2016 | DOI: 10.1002/pola.28047

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    Poly(N-vinyl pyrrolidone)-block-poly(N-vinyl carbazole)-block-poly(N-vinyl pyrrolidone) triblock copolymers were synthesized via sequential reversible addition-fragmentation chain transfer/macromolecular design via the interchange of xanthate (RAFT/MADIX) process.

  4. Poly(DCAQI): Synthesis and characterization of a new redox-active polymer

    Daniel Schmidt, Bernhard Häupler, Martin D. Hager and Ulrich S. Schubert

    Article first published online: 11 FEB 2016 | DOI: 10.1002/pola.28066

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    New redox-active monomers and polymers based on N,N′-dicyanoanthraquinone diimine (DCAQI) are synthesized and their electrochemical properties are determined by cyclic voltammetry. The monomers exhibit two redox reactions at about −0.6 and −1.0 V versus Fc+/Fc, independent from the utilized polymerizable group. However, the N-cyanoimine moieties of the polymers are hydrolyzed during the polymerization step or during the electrochemical measurements and degenerate to carbonyl groups, resulting in a new reduction signal at −1.26 V versus Fc+/Fc.

  5. Tough photopolymers based on vinyl esters for biomedical applications

    Andreas Mautner, Barbara Steinbauer, Sandra Orman, Günter Russmüller, Karin Macfelda, Thomas Koch, Jürgen Stampfl and Robert Liska

    Article first published online: 9 FEB 2016 | DOI: 10.1002/pola.28065

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    Vinyl esters are versatile alternatives to (meth)acrylates in biomedical applications due to low toxicity and unproblematic degradation products. Unfortunately, their limited mechanical properties, especially their brittleness, are a shortcoming so far. To improve mechanical properties via the introduction of certain functional groups, we have developed a new synthesis route to vinyl esters and synthesized new types of these monomer class, which upon polymerization give polymers with significantly improved impact strength.

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