Polymer International

Cover image for Vol. 61 Issue 6

June 2012

Volume 61, Issue 6

Pages 861–1040

  1. Perspective

    1. Top of page
    2. Perspective
    3. Mini-review
    4. Research Articles
    1. Control of the anisotropic morphology of latex nanocomposites containing single montmorillonite clay particles prepared by conventional and reversible addition-fragmentation chain transfer based emulsion polymerization (pages 861–865)

      Monique A Mballa Mballa, Syed I Ali, Johan PA Heuts and Alex M van Herk

      Version of Record online: 14 MAR 2012 | DOI: 10.1002/pi.4185

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      TEM image of the encapsulated montmorillonite clay platelets obtained using RAFT copolymer BA5-co-qDMAEA11 and a feed composition molar ratio of MMA:BA = 10:1. The obtained morphology is coined the cornflake morphology.

  2. Mini-review

    1. Top of page
    2. Perspective
    3. Mini-review
    4. Research Articles
    1. On the phase behaviour of organic semiconductors (pages 866–873)

      Natalie Stingelin

      Version of Record online: 16 APR 2012 | DOI: 10.1002/pi.4214

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      We present a survey on the structure development of organic semiconductors with focus on how to manipulate phase transformations and solid-state order to tailor their final “morphology” towards technological applications.

  3. Research Articles

    1. Top of page
    2. Perspective
    3. Mini-review
    4. Research Articles
    1. pH-responsive hydrogels with dispersed hydrophobic nanoparticles for the delivery of hydrophobic therapeutic agents (pages 874–879)

      Cody A Schoener, Heather N Hutson and Nicholas A Peppas

      Version of Record online: 11 APR 2012 | DOI: 10.1002/pi.4219

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      Hydrogels dispersed with hydrophobic nanoparticles show preferential loading levels and improved release profiles of hydrophobic, low molecular weight model therapeutic agents and possess pH-responsive properties appropriate for oral drug delivery.

    2. Effect of nitrile functionalized graphene on the properties of poly(arylene ether nitrile) nanocomposites (pages 880–887)

      Xulin Yang, Yingqing Zhan, Jian Yang, Hailong Tang, Fanbing Meng, Jiachun Zhong, Rui Zhao and Xiaobo Liu

      Version of Record online: 13 FEB 2012 | DOI: 10.1002/pi.4150

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      The effect of nitrile functionalized graphene on the properties of poly (arylene ether nitrile) nanocomposite films was investigated in terms of morphological, dielectric, mechanical and thermal properties.

    3. Multi-responsive polymeric microcontainers for potential biomedical applications: synthesis and functionality evaluation (pages 888–894)

      Panayiotis Bilalis, Eleni K. Efthimiadou, Alexandros Chatzipavlidis, Nikos Boukos and George C. Kordas

      Version of Record online: 25 JAN 2012 | DOI: 10.1002/pi.4152

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      Temperature and pH sensitive microcontainers with Fe3O4 nanoparticles encapsulated in the shell were synthesized by distillation precipitation polymerization. Thermal, pH, magnetic properties, drug loading and release were investigated.

    4. Thiol-ene/clay nanocomposite thin film as novel transparent barrier (pages 895–900)

      Joonwon Bae

      Version of Record online: 3 FEB 2012 | DOI: 10.1002/pi.4155

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      The preparation of TE/Clay nanocomposite thin films showing optical transparency, thermal stability, and enhanced gas barrier properties has been reported.

    5. Low-molecular-weight polytetrafluoroethylene bearing thermally stable perfluoroalkyl end-groups prepared in supercritical carbon dioxide (pages 901–908)

      Anhou Xu, Wang Zhang Yuan, Heng Zhang, Li Wang, Hong Li and Yongming Zhang

      Version of Record online: 6 FEB 2012 | DOI: 10.1002/pi.4157

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      Low-molecular-weight polytetrafluoroethylenes with perfluoroalkyl end-groups were prepared. Homopolymers have excellent thermal stability, which should be ascribed to the stable perfluoroalkyl end-groups arising from the perfluorodiacyl initiator.

    6. Soft nanoconfinement effects on the crystallization behavior of asymmetric poly(ethylene oxide)-block-poly(ε- caprolactone) diblock copolymers (pages 909–917)

      Feifei Xue, Xuesi Chen, Lijia An, Sergio S Funari and Shichun Jiang

      Version of Record online: 30 JAN 2012 | DOI: 10.1002/pi.4158

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      The shorter blocks in the nanoconfined environments are uncrystallizable in both poly(ethylene oxide)–poly(ε-caprolactone) asymmetric diblock copolymers (PEO5k–PCL1k and PEO5k–PCL30k) and the final lamellar structure is formed in both of the asymmetric diblock copolymers.

    7. Optimization of the synthesis of polyhydroxyurethanes using dynamic rheometry (pages 918–925)

      Sofia Benyahya, Bernard Boutevin, Sylvain Caillol, Vincent Lapinte and Jean-Pierre Habas

      Version of Record online: 10 FEB 2012 | DOI: 10.1002/pi.4159

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      The temperature and time of polymerization reactions that lead to polyhydroxyurethanes with optimal properties have been determined according to rheological methods.

    8. Design and optimization of an intumescent flame retardant coating using thermal degradation kinetics and Taguchi's experimental design (pages 926–933)

      Zahra Derakhshesh, Manouchehr Khorasani, Shahin Akhlaghi, Bahram Keyvani and Ali Asghar Sabbagh Alvani

      Version of Record online: 15 FEB 2012 | DOI: 10.1002/pi.4160

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      Two supplementary approaches in terms of thermal degradation kinetics and Taguchi's experimental design were employed toward developing a design system for intumescent coatings.

    9. New piezoelectric damping composites of poly(vinylidene fluoride) blended with clay and multi-walled carbon nanotubes (pages 934–938)

      Chengzhen Geng, Jianchuan Wang, Qin Zhang and Qiang Fu

      Version of Record online: 13 FEB 2012 | DOI: 10.1002/pi.4161

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      The damping property of PVDF piezoelectric damping composite which containing 1.9 wt% MWCNTs and 3 wt% OMMT was greatly improved. A model and an approximate calculation were applied to explain the reason

    10. Rapid stereocomplex formation of polylactide using supercritical fluid technology (pages 939–942)

      Purba Purnama and Soo Hyun Kim

      Version of Record online: 9 MAR 2012 | DOI: 10.1002/pi.4162

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      The supercritical fluid enables a rapid process to obtain a high-degree stereocomplex polylactide (∼98%) in a relatively short time and feasible for molecular weight (Mw) ∼ 160, 000 or higher.

    11. Wavelength conversion using rare earth doped oxides in polyolefin based nanocomposite films (pages 943–950)

      Abhijit Jadhav, Amol Pawar, Tae Ryong Hwang, Jae Wook Lee, Min Wook Choi, Byung Kyu Kim and Young Soo Kang

      Version of Record online: 20 FEB 2012 | DOI: 10.1002/pi.4163

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      The ‘phosphor’ nanoparticles embedded in the nanocomposite film helps to convert high energy UV and far UV light into visible and near IR range.

    12. High molecular weight diblock and ABA/ABC triblock copolymers of tert-butyl (meth)acrylate (pages 951–958)

      Dorota Neugebauer, Katarzyna Bury and Katarzyna Pendziałek

      Version of Record online: 20 FEB 2012 | DOI: 10.1002/pi.4164

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      The monofunctional macroinitiators PtBA-Br and PtBMA-Br were prepared by ATRP and used for synthesis of block copolymers. The increase in polydispersity with the number of segments in the copolymer indicated lower blocking efficiency of macroinitiators. The combination of proper polymer segments in one macromolecule allowed to drive the Tg values.

    13. Dynamic cure kinetics of epoxy resins using an amine-containing borate as a latent hardener (pages 959–965)

      Qiao Yan Liu, Jin Bin Chen, Shu Mei Liu and Jian Qing Zhao

      Version of Record online: 20 FEB 2012 | DOI: 10.1002/pi.4165

      Thumbnail image of graphical abstract

      Avrami and Arrhenius methods and Horowitz-Metzger method could reveal transitions during cure reaction and provide Ea of different reaction stages for epoxy resin system using an amine-containing borate (NBD) as a latent hardener in comparison with a common hardener (DMEA).

    14. Syndiotactic-specific radical polymerization of N-isopropylacrylamide in toluene at low temperatures in the presence of silyl alcohols (pages 966–970)

      Tomohiro Hirano, Takahiro Kamikubo and Koichi Ute

      Version of Record online: 6 FEB 2012 | DOI: 10.1002/pi.4166

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      The radical polymerization of N-isopropylacrylamide in toluene at −80 °C in the presence of triethylsilanol was found to give a syndiotactic polymer with a racemo dyad content of 75%.

    15. Mechanical properties and surface morphology of photodegraded polyoxymethylene modified by a core–shell acrylate elastomer with UV stabilization (pages 971–981)

      Daojun Zhou, Bin You, Guibo Wu and Xiancheng Ren

      Version of Record online: 10 FEB 2012 | DOI: 10.1002/pi.4167

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      Compared with poly(MMA-co-BA-co-BPMA), core-shell poly(MMA-BA-BPMA) has a better UV-resistance effect on polyoxymethylene; the mechanical properties are better retained and the surface protected significantly in a UV aging process.

    16. Ultradrawing properties of ultrahigh-molecular-weight polyethylene/attapulgite fibers (pages 982–989)

      Jen-Taut Yeh, Chuen-Kai Wang, Ping Hu, Yu-Ching Lai, Lu-Kai Huang and Fang-Chang Tsai

      Version of Record online: 6 MAR 2012 | DOI: 10.1002/pi.4169

      Thumbnail image of graphical abstract

      An investigation of the influence of original and modified attapulgite (ATP) contents on the ultradrawing properties of ultrahigh-molecular-weight polyethylene (UHMWPE)/ATP and UHMWPE/modified ATP as-prepared fibers is reported.

    17. Preparation of inner asymmetric composite microspheres (pages 990–993)

      Hepeng Zhang, Qiuyu Zhang, Baoliang Zhang, Hailong Xu and Xinlong Fan

      Version of Record online: 13 FEB 2012 | DOI: 10.1002/pi.4170

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      Novel inner asymmetric composite microspheres were prepared by encapsulating surface-modified magnetic particles via mini-emulsion polymerization. The possible mechanism of formation of the inner asymmetric composite microspheres is discussed.

    18. Preparation and characterization of degradable cellulose-based macroporous resin (pages 994–1001)

      Chaosheng Yu, Haipeng Liu, Yanqing Li and Yuangang Zu

      Version of Record online: 20 FEB 2012 | DOI: 10.1002/pi.4171

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      Biodegradable macroporous resin prepared by crossing cellulose with TDI exhibits better adsorption and desorption effect on rutin.

    19. Synthesis and optimization of molecularly imprinted polymers for quercetin (pages 1002–1009)

      Hui Yu, Zhenbin Chen, Yu Fu, Lei Kang, Meng Wang and Xueyan Du

      Version of Record online: 1 MAR 2012 | DOI: 10.1002/pi.4172

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      MIP prepared under the optimal conditions showed a high specific recognition of Quercetin with a maximal separation degree of 6.58 from the mixture of Quercetin and Genistein.

    20. Interfacial interaction and mechanical properties of chitin whisker–poly(vinyl alcohol) gel-spun nanocomposite fibers (pages 1010–1015)

      Ahmed Jalal Uddin, Jun Araki, Masahiro Fujie, Shinichiro Sembo and Yasuo Gotoh

      Version of Record online: 20 FEB 2012 | DOI: 10.1002/pi.4174

      Thumbnail image of graphical abstract

      During gel-spinning of chitin whisker (ChW)–poly(vinyl alcohol) (PVA) fibers, PVA chains adhere with oriented ChWs leading to higher PVA crystallinity in the composite fibers. The PVA–ChW interaction results in significant enhancement in mechanical properties of the composites.

    21. Synthesis and photovoltaic properties of two side-chain polymeric metal complexes containing 8-hydroxyquinoline and fluorene units with Zn(II) and Cd(II) (pages 1016–1022)

      Gaojun Wen, Lirong Zhang, Lihui Guo, Qian Xiu, Jinyan Deng and Chaofan Zhong

      Version of Record online: 20 FEB 2012 | DOI: 10.1002/pi.4175

      Thumbnail image of graphical abstract

      Two novel side-chain polymeric metal complexes (PF1 and PF2) were synthesized and characterized. Dye-sensitized solar cells based on PF1 and PF2 exhibit conversion efficiencies up to 0.32 and 0.24%, respectively.

    22. Incorporation of polyfluorenes into poly(lactic acid) films for sensor and optoelectronics applications (pages 1023–1030)

      Liliana Martelo, Alfonso Jiménez, Artur JM Valente, Hugh D Burrows, Ana T Marques, Michael Forster, Ullrich Scherf, Mercedes Peltzer and Sofia M Fonseca

      Version of Record online: 20 FEB 2012 | DOI: 10.1002/pi.4176

      Thumbnail image of graphical abstract

      Biocompatible, optically transparent and luminescent films with potential in sensing and optoelectronics are obtained by incorporating fluorene-based conjugated polymers and polyelectrolytes in poly(lactic acid).

    23. Crystallization, rheological behavior and mechanical properties of poly(vinylidene fluoride) composites containing graphitic fillers: a comparative study (pages 1031–1040)

      Jun Cao, Yu Wang, Kai Ke, Yong Luo, Wei Yang, Bang-Hu Xie and Ming-Bo Yang

      Version of Record online: 20 FEB 2012 | DOI: 10.1002/pi.4177

      Thumbnail image of graphical abstract

      The different filler characteristics originating from the method of preparation dominate the dispersion of graphitic fillers in the poly(vinylidene fluoride) matrix and the properties of composites in terms of the filler–molecular chain interactions.

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