Journal of Polymer Science Part A: Polymer Chemistry

Cover image for Vol. 53 Issue 5

Early View (Online Version of Record published before inclusion in an issue)

Impact Factor: 3.245

ISI Journal Citation Reports © Ranking: 2013: 14/82 (Polymer Science)

Online ISSN: 1099-0518

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

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  1. 1 - 19
  1. Articles

    1. Novel hyperbranched polymers synthesized via A3 + B(B′) approach by radical addition-coupling polymerization

      Yaobin Liu and Zhiqiang Fan

      Article first published online: 28 JAN 2015 | DOI: 10.1002/pola.27518

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      A novel application of radical addition-coupling polymerization (RACP) for synthesis of hyperbranched polymers is reported, by Cu/PMDETA-mediated RACP of 2-methyl-2-nitrosopropane with trimethylolpropane tris(2-bromopropionate) or a bromo-ended 3-arm PS macromonomer, respectively. The mechanism includes formation of carbon radicals from bromide through single electron transfer, its capture by 2-methyl-2-nitrosopropane that results in nitroxide radical, and cross-coupling reaction of the nitroxide radical with other carbon radicals. A hyperbranched polymer can be formed after multiple steps of such reactions.

    2. Benzodithiophene-thiophene-based photovoltaic polymers with different side-chains

      Thanh Luan Nguyen, Seyeong Song, Seo-Jin Ko, Hyosung Choi, Ji-Eun Jeong, Taehyo Kim, Sungu Hwang, Jin Young Kim and Han Young Woo

      Article first published online: 19 JAN 2015 | DOI: 10.1002/pola.27516

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      Side-chains of photovoltaic polymers need to be multifunctional to induce a deep highest occupied molecular orbitalHOMO level and chain planarity (for crystalline ordering) as well as good solution processability.

    3. Synthesis, characterization, and application to polymer solar cells of polythiophene derivatives with ester- or ketone-substituted phenyl side groups

      Minh Anh Truong, Seijiro Fukuta, Tomoyuki Koganezawa, Yu Shoji, Mitsuru Ueda and Tomoya Higashihara

      Article first published online: 13 JAN 2015 | DOI: 10.1002/pola.27513

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      Four polythiophene derivatives including regiorandom polymers P1, P2, and P3 and a regioregular polymer P4, containing phenyl side chain with electron-withdrawing groups such as an ester and a ketone at the 3-position of thiophene ring, prepared by Stille polycondensation are applied to p-type semiconducting polymers in bulk heterojunction solar cells. The devices based on the polymer P4 show better photovoltaic performances than those based on other polymers, probably due to the existence of the crystallinity of the regioregular polymer.

    4. Molecular heterogeneity of ethylene-propylene rubbers: New insights through advanced crystallization-based and chromatographic techniques

      Mohau Justice Phiri, Sadiqali Cheruthazhekatt, Anita Dimeska and Harald Pasch

      Article first published online: 13 JAN 2015 | DOI: 10.1002/pola.27512

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      The molar mass and chemical composition distributions of five ethylene-propylene rubber (EPR) copolymers with high comonomer contents (25–66%) were studied using various advanced analytical techniques. HT-HPLC provided a more comprehensive separation and characterization of both the amorphous and the crystalline TREF fractions as compared with DSC and CRYSTAF which can only address the crystalline fractions. Preparative TREF provided fractions of different chemical compositions that were subjected to a combination of various analytical methods.

    5. Donor–acceptor rod–coil block copolymers comprising poly[2,7-(9,9-dihexylfluorene)-alt-bithiophene] and fullerene as compatibilizers for organic photovoltaic devices

      Erika Bicciocchi, Matthias Haeussler, Ezio Rizzardo, Andrew D. Scully and Kenneth P. Ghiggino

      Article first published online: 13 JAN 2015 | DOI: 10.1002/pola.27514

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      Rod–coil block copolymers comprising a conjugated polymer and functionalized C60 polymer components have been synthesized by a combination of condensation and controlled free radical polymerization methods and found to impart improved operational stability to polymer solar cells when used as blend compatibilizers.

    6. Synthesis of polymers possessing tetraphenylethylene units by three-component coupling reactions of poly(p-phenylene ethynylene) derivative with aryl halides and phenylboronic acid

      Takeru Suto, Hiroki Nishiyama, Shinsuke Inagi and Ikuyoshi Tomita

      Article first published online: 13 JAN 2015 | DOI: 10.1002/pola.27503

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      A poly(p-phenylene ethynylene) derivative was subjected to the palladium-catalyzed three-component coupling reaction using aryl halides and phenylboronic acid to obtain polymers having tetrasubstituted cis-vinylene units. The polymers produced by the present polymer reaction proved to exhibit hypsochromic shifts of the absorption maxima in their UV–vis absorption spectra, while bathochromic shifts of the emission maxima were observed in their photoluminescence spectra.

    7. Synthesis and properties of amphiphilic and biodegradable poly(ε-caprolactone-co-glycidol) copolymers

      Jinbao Xu, Jinxian Yang, Xiaodong Ye, Chunfeng Ma, Guangzhao Zhang and Stergios Pispas

      Article first published online: 13 JAN 2015 | DOI: 10.1002/pola.27515

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      Poly(ε-caprolactone-co-tert-butyl glycidyl ether) statistical copolymer has been synthesized with phosphazene (t-BuP4) as the catalyst. Quartz crystal microbalance with dissipation measurements show that the degradation rate of the hydrolyzed amphiphilic copolymer poly(ε-caprolactone-co-glycidol) increases with the content of hydrophilic glycidol segments.

  2. Original Articles

    1. Theoretical and experimental characterization of amino-PEG-phosphonate-terminated Polyphosphorhydrazone dendrimers: Influence of size and PEG capping on cytotoxicity profiles

      Aurélien Hameau, Séverine Fruchon, Christian Bijani, Alessandro Barducci, Muriel Blanzat, Rémy Poupot, Giovanni M. Pavan, Anne-Marie Caminade and Cédric-Olivier Turrin

      Article first published online: 31 DEC 2014 | DOI: 10.1002/pola.27501

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      A series of low generation PPH (poly(phosphorhydrazone)) dendrimers grafted with terminal amino-PEG phosphonates or amino-PEG phosphonic acids is presented. A size study by diffusional NMR, dynamic light scattering (DLS) is confirmed by molecular dynamics (MD) and well-tempered metadynamics. Cytotoxicity studies on human peripheral blood mononuclear cells confirm the influence of PEGylation to reduce cytotoxicity of these polyanionic dendrimers.

  3. Articles

    1. Evolution of particle morphology during the synthesis of hybrid acrylic/CeO2 nanocomposites by miniemulsion polymerization

      Miren Aguirre, Maria Paulis, Mariano Barrado, Maider Iturrondobeitia, Ana Okariz, Teresa Guraya, Julen Ibarretxe and Jose Ramon Leiza

      Article first published online: 31 DEC 2014 | DOI: 10.1002/pola.27504

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      The particle evolution was followed during the synthesis of an acrylic/CeO2 hybrid latex produced by a two step emulsion polymerization approach. The morphology of the miniemulsion nanodroplets, the seed particles and the final particles was deeply studied.

    2. Efficient photoinduced In situ preparation of clay/poly(glycidyl methacrylate) nanocomposites using hydrogen-donor silane

      Khouloud Jlassi, Mémia Benna-Zayani, Mohamed M. Chehimi and Yusuf Yagci

      Article first published online: 31 DEC 2014 | DOI: 10.1002/pola.27505

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      Poly(glycidyl methacrylate) (PGMA)/bentonite nanocomposites were prepared by in situ radical photopolymerization using N,N-dimethylaminopropyltrimethoxysilane-modified clay acting as macrohydrogen donor for benzophenone in solution. This Type II initiating system is efficient for designing exfoliated nanocomposites with a PGMA-rich surface.

    3. Xanthates designed for the preparation of N-Vinyl pyrrolidone-based linear and star architectures via RAFT polymerization

      Iain J. Johnson, Ezat Khosravi, Osama M. Musa, Rose E. Simnett and Ahmed M. Eissa

      Article first published online: 31 DEC 2014 | DOI: 10.1002/pola.27502

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      Novel xanthate RAFT agents (RAFT1–5) have been prepared specifically for the preparation of a range of novel N-vinyl pyrrolidone-based polymeric materials with linear and star architectures via RAFT polymerization. Ethyl pyrrolidone moiety was included in the structures of the xanthates as a part of either the R (RAFT1–3) or Z group (RAFT4) to evaluate their effect on the polymerization characteristics as well as to impart homogeneity in the resulting PNVP-based materials.

    4. Synthesis and chiral recognition of helical poly(phenylacetylene)s bearing l-phenylglycinol and its phenylcarbamates as pendants

      Chunhong Zhang, Hailun Wang, Taotao Yang, Rui Ma, Lijia Liu, Ryosuke Sakai, Toshifumi Satoh, Toyoji Kakuchi and Yoshio Okamoto

      Article first published online: 31 DEC 2014 | DOI: 10.1002/pola.27506

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      Helical poly(phenylacetylene)s bearing l-phenylglycinol and its phenylcarbamate residues were synthesized and used as CSPs for HPLC. The acidity of phenylcarbamate N-H proton and the formation of hydrogen bonds were dependent on the type, position, and number of substituents on the phenylcarbamate residues. Their chiral recognition abilities seem to be improved by the introduction of substituents on the phenylcarbamate residues, PPA-1d bearing the more acidic N-H groups, exhibited a higher chiral recognition than the others.

    5. Synthesis of bio-based poly(N-phenylitaconimide) by atom transfer radical polymerization

      Seiji Okada and Krzysztof Matyjaszewski

      Article first published online: 31 DEC 2014 | DOI: 10.1002/pola.27507

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      Atom-transfer radical polymerization of N-phenylitaconimide, prepared from bio-derived itaconic acid, using FeBr3(IDipp) was achieved in high conversion, leading to polymers with relatively low dispersity. The copolymers of PhII with St at various molar ratios were also prepared. A one-pot synthesis of poly(St-alt-PhII)-b-polySt was successful when copolymerization was carried out with [St]0 > [PhII]0. Differential scanning calorimetry analysis revealed that the obtained polymers showed high Tg =216 °C for polyPhII, and poly(St-alt-PhII)-b-polySt with [PhII]/[St] = 27/73 with Mn = 16,900 exhibited two Tgs, at 162 and 104 °C which corresponded to the presence of a poly(St-alt-PhII) and a polySt segment, respectively.

    6. Aza-Michael addition reaction: Post-polymerization modification and preparation of PEI/PEG-based polyester hydrogels from enzymatically synthesized reactive polymers

      Christian Hoffmann, Mihaiela C. Stuparu, Anders Daugaard and Anzar Khan

      Article first published online: 29 DEC 2014 | DOI: 10.1002/pola.27498

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      The aza-Michael addition chemistry is shown to be a useful synthetic tool for post-polymerization modification of enzymatically prepared itaconate-based polyesters and for the preparation of PEI/PEG-based hydrogel materials.

    7. Cationic ring-opening polymerization of trimethylene carbonate to α,ω-dihydroxy telechelic and star-shaped polycarbonates catalyzed by reusable o-benzenedisulfonimide

      Hao Wu, Yufeng Ji, Zhenjiang Li, Xin Wang, Qiguo Zhang, Saide Cui, Wenzhuo Wu, Jingjing Liu and Kai Guo

      Article first published online: 26 DEC 2014 | DOI: 10.1002/pola.27496

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      The o-benzenedisulfonimide (OBS) has been evaluated as an excellent Brønsted acidic catalyst for the controlled/living ring-opening polymerizations (ROPs) of trimethylene carbonate (TMC) through activated monomer mechanism (AMM). A series of α,ω-hydroxy telechelic, and star-shaped polycarbonates are synthesized to highlight the advantage of the OBS-catalyzed ROP of TMC.

    8. Reversibly light-responsive biodegradable poly(carbonate)s micelles constructed via CuAAC reaction

      Ding Hu, Hua Peng, Yile Niu, Yefei Li, Yingchun Xia, Ling Li, Jingwen He, Xiangyu Liu, Xinnian Xia, Yanbing Lu and Weijian Xu

      Article first published online: 26 DEC 2014 | DOI: 10.1002/pola.27499

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      A facile method for the construction of light-responsive poly(carbonate)s PEG113-b-PMPCn-SP was developed via introducing spiropyran chromophore into the side chain of the hydrophobic poly(carbonate)s block via copper catalyzed azide-alkyne cycloaddition reaction. Under alternative UV and visible light irradiation, the amphiphile carried on a reversible micelle transition in water due to the photoisomerization between spiropyran (SP) and merocyanine form. The light-controlled release and re-encapsulation behaviors of coumarin 102-loaded micelles were further investigated by fluorescence spectroscopy. All results showed that PEG113-b-PMPC25-SP obtained in this study has potential application in drug delivery systems.

    9. Efficient solvent-free alternating copolymerization of CO2 with 1, 2-epoxydodecane and terpolymerization with styrene oxide via heterogeneous catalysis

      Ying-Ying Zhang, Ren-Jian Wei, Xing-Hong Zhang, Bin-Yang Du and Zhi-Qiang Fan

      Article first published online: 22 DEC 2014 | DOI: 10.1002/pola.27497

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      The well-controlled solvent-free alternating copolymerization of 1, 2-epoxydodecane and CO2 was reported by using nanolamellar Zn-Co(III) double metal cyanide complex catalyst. By introducing styrene oxide with electron-withdrawing phenyl group into 1, 2-epoxydodecane-CO2 copolymerization system, a new random terpolymer was produced with single glass transition temperatures (Tgs) in a wide range from 3 to 56 °C, which might be potentially used as biodegradable elastomers or plastics.

    10. Core-shell structured poly(glycidyl methacrylate)/BaTiO3 nanocomposites prepared by surface-initiated atom transfer radical polymerization: A novel material for high energy density dielectric storage

      Muhammad Ejaz, Venkata S. Puli, Ravinder Elupula, Shiva Adireddy, Brian C. Riggs, Douglas B. Chrisey and Scott M. Grayson

      Article first published online: 16 DEC 2014 | DOI: 10.1002/pola.27485

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      The surface-initiated atom transfer radical polymerization has been applied to graft polyglycidyl methacrylates (PGMA) on the surface of BaTiO3 nanoparticles in two steps to form core-shell structured BaTiO3-PGMA nanocomposites. BaTiO3 are covered with a dense uniform film of grafted PGMA. The resultant BaTiO3-PGMA nanocomposites show an improved dielectric constant, a high breakdown field strength and high-energy storage density. Improved dielectric and electrical properties of these nanocomposites are attributed to good nanoparticles dispersion and enhanced interfacial polarization.

  4. Erratum

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      Erratum: Evaluation Of proton conductivity of sulfonated polyimide/dihydroxy naphthalene charge-transfer complex hybrid membranes

      Liana Christiani, Sandra Hilaire, Kazunari Sasaki and Masamichi Nishihara

      Article first published online: 30 SEP 2014 | DOI: 10.1002/pola.27419

      This article corrects:

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