Polymer International

Cover image for Vol. 61 Issue 11

November 2012

Volume 61, Issue 11

Pages 1593–1692

  1. Review

    1. Top of page
    2. Review
    3. Research Articles
    1. Research progress on the preparation and application of monodisperse cationic polymer latex particles (pages 1593–1602)

      Qingquan Liu, Yanlu Li, Yinxiang Duan and Hu Zhou

      Version of Record online: 30 AUG 2012 | DOI: 10.1002/pi.4347

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      This review focuses on the features, preparation and applications of uniform cationic polymer microspheres, as well as on the formation mechanism of uniform microspheres.

  2. Research Articles

    1. Top of page
    2. Review
    3. Research Articles
    1. Polystyrene composites of single-walled carbon nanotubes-graft-polystyrene (pages 1603–1610)

      Abhijit Paul, Brian P Grady and Warren T Ford

      Version of Record online: 23 MAY 2012 | DOI: 10.1002/pi.4258

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      2,2,6,6-Tetramethylpiperidinyl-N-oxy-ended polystyrene (PS) grafts to single-walled carbon nanotubes (SWCNTs) to produce SWCNT-g-PS containing 20-25% of PS. Composites of SWCNT-g-PS in PS have an increased glass transition temperature and low electrical conductivity.

    2. Synthesis, post-modification and characterization of linear polystyrene-based supports for interaction with immobilized biocatalysts (pages 1611–1618)

      Michele Petenzi, Teodora Bavaro, Claudio Cornaggia, Daniela Ubiali, Massimo Pregnolato and Dario Pasini

      Version of Record online: 4 JUL 2012 | DOI: 10.1002/pi.4307

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      Novel linear polystyrene derivatives are synthesized with controlled free radical methodologies, and synthetic strategies to post-modify them are optimized. Their ability to interact with immobilized biocatalysts is studied.

    3. Preparation of polymer microspheres with a rosin moiety from rosin ester, styrene and divinylbenzene (pages 1619–1626)

      Caili Yu, Chuanwei Chen, Qinhai Gong and Fa-Ai Zhang

      Version of Record online: 23 MAY 2012 | DOI: 10.1002/pi.4249

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      A rosin-based macromonomer was used to prepare polymer microspheres. Open pores were abundant on the surface of the polymer microsphere which provided a base for adsorption and separation.

    4. Preparation and properties of fluorine-containing polysiloxanes obtained via ring-opening copolymerization of trifluoropropyltrimethylcyclotrisiloxane with cyclotetrasiloxane catalyzed by rare earth solid superacid SOequation image/TiO2/Ln3+ (pages 1627–1633)

      Xiongfa Yang, Qian Shao, Linlin Yang, Cheng Cao, Xilin Hua, Lianbin Wu and Guoqiao Lai

      Version of Record online: 16 MAY 2012 | DOI: 10.1002/pi.4251

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      Fluorine-containing polysiloxanes were synthesized through a novel and environmentally friendly method: ring-opening copolymerization of trifluoropropyltrimethylcyclotrisiloxane with cyclotetrasiloxane catalyzed by rare earth solid superacid SOequation image/TiO2/Ln3+. The effects of reaction conditions were examined in detail.

    5. Nanohybrid shish kebab structure and its effect on mechanical properties in poly(L-lactide)/carbon nanotube nanocomposite fibers (pages 1634–1639)

      Nanying Ning, Wei Zhang, Yongsheng Zhao, Feng Luo and Qiang Fu

      Version of Record online: 18 JUN 2012 | DOI: 10.1002/pi.4252

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      A nanohybrid shish kebab (NHSK) structure has been successfully obtained in poly(L-lactide) (PLLA) systems by using double-walled carbon nanotube (CNT) bundles with ‘groove’ structure. The formation of NHSK structure can significantly improve the mechanical properties of PLLA/CNT nanocomposite fibers.

    6. Synthesis and characterization of monomeric and polymeric pyridinylimine-based Ni(II) complexes and their catalytic activities in ethylene oligomerization (pages 1640–1647)

      Tansir Ahamad and Saad M Alshehri

      Version of Record online: 6 JUN 2012 | DOI: 10.1002/pi.4254

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      A new polymeric ligand and its complex with nickel were synthesized in good yield. The synthesized polymer–metal complex was used as a catalyst precursor for ethylene oligomerization.

    7. Commercial biodegradable material for food contact: methodology for assessment of service life (pages 1648–1654)

      María Sonia Dopico-García, Ana Ares-Pernas, María Victoria González-Rodríguez, José Manuel López-Vilariño and María José Abad-López

      Version of Record online: 16 MAY 2012 | DOI: 10.1002/pi.4255

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      Aging in food simulant showed physical aging using DSC, progressive deterioration of mechanical properties and rapid increase of water uptake and migration levels. Three variables are proposed for quality control.

    8. Interfacial agent effect on rheological response and crystallite characteristics in germicidal polypropylene/titanium dioxide nanocomposites (pages 1655–1665)

      Cristina Serrano, Jorge A Ressia, Enrique M Vallés, Marta Fernández-García and María L Cerrada

      Version of Record online: 23 MAY 2012 | DOI: 10.1002/pi.4256

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      An interfacial agent promotes intimate contact between the two components in isotactic polypropylene (iPP)/TiO2 nanocomposites, maintains almost unchanged the rheological characteristics and allows crystallization to take place in a narrower temperature range.

    9. Structure–property relationships in polyhydroxyurethanes produced from terephthaloyl dicyclocarbonate with various polyamines (pages 1666–1674)

      Sofia Benyahya, Jean-Pierre Habas, Rémi Auvergne, Vincent Lapinte and Sylvain Caillol

      Version of Record online: 23 MAY 2012 | DOI: 10.1002/pi.4257

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      This article reports the synthesis of new non-isocyanate polyurethanes and the influence of various amine structures on the glass transition temperatures of the polyurethanes, which are between 4 and 80 °C.

    10. Synthesis and characterization of spider-web-like electrospun mats of meta-aramid (pages 1675–1682)

      Hyun Ju Oh, Hem Raj Pant, Young Sic Kang, Kyung Soo Jeon, Bishweshwar Pant, Cheol Sang Kim and Hak Yong Kim

      Version of Record online: 27 JUN 2012 | DOI: 10.1002/pi.4260

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      CaCl2 present in meta-aramid solution can increase the spinability of the solution and cause the formation of large numbers of true nanofibers which are arranged in a spider-web-like structure.

    11. A facile route to develop electrical conductivity with minimum possible multi-wall carbon nanotube (MWCNT) loading in poly(methyl methacrylate)/MWCNT nanocomposites (pages 1683–1692)

      Nilesh K Shrivastava, Prativa Kar, Sandip Maiti and Bhanu B Khatua

      Version of Record online: 12 JUN 2012 | DOI: 10.1002/pi.4263

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      A simple method is reported to prepare electrically conducting PMMA/MWCNT nanocomposites through in situ/ polymerization of MMA/MWCNT in the presence of PMMA beads. The dispersion of the CNTs, mostly outside the PMMA beads, shifted the percolation of the CNTs to a much lower CNT loading (0.12 wt%) than reported to-date in PMMA matrix with unmodified MWCNTs of similar qualities. Further details can be found in the article.

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