Polymer International

Cover image for Vol. 61 Issue 7

July 2012

Volume 61, Issue 7

Pages 1041–1220

  1. Mini-reviews

    1. Top of page
    2. Mini-reviews
    3. Research Articles
    1. Wrinkling instabilities in polymer films and their applications (pages 1041–1047)

      Chi-Mon Chen and Shu Yang

      Article first published online: 16 APR 2012 | DOI: 10.1002/pi.4223

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      We review thermal stress-, osmotic pressure- and mechanical stress-induced surface wrinkling instabilities in polymer films and how to control the wrinkle size, order and orientation. For each system, we present various technological applications that harness wrinkling effects.

    2. Hydroxyl-functional polyurethanes and polyesters: synthesis, properties and potential biomedical application (pages 1048–1060)

      Christian Hahn, Helmut Keul and Martin Möller

      Article first published online: 23 MAY 2012 | DOI: 10.1002/pi.4242

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      The preparation of polyurethanes and polyesters by means of polycondensation accompanied by the generation of pendant primary and/or secondary hydroxyl groups which are variously addressable is reviewed.

  2. Research Articles

    1. Top of page
    2. Mini-reviews
    3. Research Articles
    1. Methacrylated calix[4]arene phosphonic acids as functionalized crosslinker for radical polymerization (pages 1061–1066)

      Bernd Garska, Monir Tabatabai, Urs Fischer, Norbert Moszner, Andreas Utterodt and Helmut Ritter

      Article first published online: 2 MAY 2012 | DOI: 10.1002/pi.4205

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      Calix[4]arenes phosphonic acids were used as adhesive agents in commonly used dental adhesives. The polymerization behaviour and the adhesion on dentin was analysed.

    2. The influence of the internal structure of core–shell particles on poly(vinyl chloride)/(methyl methacrylate–butadiene–styrene) blends (pages 1067–1072)

      Chao Zhou, Xiaoxue Qi, Yun Xia Gao, Shulin Sun and Huixuan Zhang

      Article first published online: 20 MAR 2012 | DOI: 10.1002/pi.4178

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      The MBS core-shell impact modifiers were designed with similar grafting degree but different internal structure, it was found that the sub-inclusion influence the property of PVC/MBS greatly.

    3. Novel trifluoromethylated epoxy based thermosets: synthesis and characterization (pages 1073–1078)

      Marcela E Penoff, Pablo E Montemartini and Patricia A Oyanguren

      Article first published online: 29 MAR 2012 | DOI: 10.1002/pi.4179

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      Two series of trifluoromethylated crosslinked epoxy-based polymers with different molecular architecture and fluorine content have been investigated. Final materials were characterized by high optical transparency, low dielectric constants as well as low water uptakes.

    4. Graphene based composites prepared through exfoliation of graphite platelets in methyl methacrylate/poly(methyl methacrylate) (pages 1079–1083)

      Marta Cardinali, Luca Valentini, Josè M. Kenny and İbrahim Mutlay

      Article first published online: 1 MAR 2012 | DOI: 10.1002/pi.4180

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      Methyl methacrylate/poly(methyl methacrylate) was used as an organic medium for exfoliating graphite platelets. The method makes possible the direct exfoliation of graphene sheets in a polymer matrix without chemical treatment.

    5. Mechanical, thermal and electrical properties of multi-walled carbon nanotube/aluminium nitride/polyetherimide nanocomposites (pages 1084–1093)

      Sheng-Yen Wu, Yuan-Li Huang, Chen-Chi M Ma, Siu-Ming Yuen, Chih-Chun Teng, Shin-Yi Yang and Chorng H. Twu

      Article first published online: 9 MAR 2012 | DOI: 10.1002/pi.4184

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      Silane-modified AlN and polyimide-grafted multi-walled carbon nanotubes (PI-g MWCNTs) were used to enhance the adhesion force between filler and a polyetherimide matrix. The hybrid filler incorporated into the polyetherimide matrix enhances significantly the properties of the composite.

    6. Influence of annealing treatments on the essential work of fracture of biaxially drawn poly(ethylene terephthalate) (pages 1094–1100)

      Hong-Nga Vu, Catherine Gauthier, Olivier Lame and Jean-Yves Cavaillé

      Article first published online: 14 MAR 2012 | DOI: 10.1002/pi.4186

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      By applying thermal treatments the fracture anisotropy of PET films can be erased then even reversed

    7. Novel organic–inorganic hybrid coatings prepared by the sol–gel process: corrosion and mechanical properties (pages 1101–1106)

      Kishore K Jena, Tapan K Rout, Ramanuj Narayan and Kothapalli V S N Raju

      Article first published online: 16 MAR 2012 | DOI: 10.1002/pi.4187

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      The Netherlands (Hyperbranched polyurethane-urea)/(3-aminopropyl) triethoxysilane (HBPUU-APTES-ZnO) hybrid coatings are synthesized using inexpensive mixing technique by varying APTES-modified ZnO concentration. The mechanical and surface properties of the hybrid coating films were studied and compared with unmodified and modified ZnO.

    8. Enhanced mechanical and thermal properties of rigid polyurethane foam composites containing graphene nanosheets and carbon nanotubes (pages 1107–1114)

      Dingxiang Yan, Ling Xu, Chen Chen, Jianhua Tang, Xu Ji and Zhongming Li

      Article first published online: 10 MAY 2012 | DOI: 10.1002/pi.4188

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      The superiority of graphene nanosheets over carbon nanotubes in improving mechanical properties and heat resistance of RPUF nanocomposites was attributed to their wrinkled surface structure and unique 2D geometrical morphology.

    9. Chemical modification of cellulose acetate by allylation and crosslinking with siloxane derivatives (pages 1115–1126)

      George Stiubianu, Alina Nicolescu, Alexandra Nistor, Maria Cazacu, Cristian Varganici and Bogdan C Simionescu

      Article first published online: 14 MAR 2012 | DOI: 10.1002/pi.4189

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      Surface properties and other properties of cellulosic materials were changed as a result of chemical crosslinking with H-functionalized disiloxane or polyorganosiloxane.

    10. Polymer particle adsorption at textile/liquid interfaces: a simple approach for a new functionalization route (pages 1127–1135)

      Lionel Ripoll, Claire Bordes, Pedro Marote, Sabrina Etheve, Abdelhamid Elaissari and Hatem Fessi

      Article first published online: 6 MAR 2012 | DOI: 10.1002/pi.4190

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      The adsorption of cationic particles onto synthetic fibres was studied. Results showed that the adsorption process was governed by electrostatic interactions and washing tests indicated strong interactions between particles and textile fibres.

    11. Morphology, thermal properties, hydrophobicity and O2/N2 gas separation performance of 4,4′-oxydiphthalic anhydride-based polyimide/titania hybrids (pages 1136–1143)

      Hsu-Tung Lu, Mei-Hui Tsai, I-Hsiang Tseng, Chiou-Juy Chen and Shih-Liang Huang

      Article first published online: 16 MAR 2012 | DOI: 10.1002/pi.4191

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      The O2/N2 selectivities of PIB hybrids decreased as the Ti(OEt)4 content increases and then increases as the Ti(OEt)4 content increases from 4 wt% to 5 wt% or more.

    12. Study of pH/temperature dual stimuli-responsive nanogels with interpenetrating polymer network structure (pages 1144–1150)

      Xiaoyun Liu, Hui Guo and Liusheng Zha

      Article first published online: 20 MAR 2012 | DOI: 10.1002/pi.4192

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      Nanogels having interpenetrating polymer network structure with pH/temperature dual stimuli responsiveness synthesized using an in situ polymerization method have the advantage of little mutual interference between temperature-responsive and pH-responsive components.

    13. Thermo- and pH-responsive microgels for controlled release of insulin (pages 1151–1157)

      Yunyan Bai, Zhe Zhang, Mingxiao Deng, Li Chen, Chaoliang He, Xiuli Zhuang and Xuesi Chen

      Article first published online: 20 MAR 2012 | DOI: 10.1002/pi.4193

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      A series of thermo- and pH-responsive microgels were synthesized, which undergo reversible volume phase transitions in response to pH and temperature changes. In vitro, the microgels release insulin slowly at pH = 1.2.

    14. Synthesis and conformation effects of poly(phenylacetylene)s having chiral and racemic polylactide pendants (pages 1158–1162)

      Chunhong Zhang, Hailun Wang, Guangdong Su, Ruiqi Li, Xiande Shen, Shuang Zhang, Qianqian Geng, Fangbin Liu, Issei Otsuka, Toshifumi Satoh and Toyoji Kakuchi

      Article first published online: 29 MAR 2012 | DOI: 10.1002/pi.4194

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      Poly(PA-PLLA) possessed a dynamic one-handed helical conformation in various solvents due to the chiral poly(L-lactide) pendants, while poly(PA-PDLLA) possessed racemic main chains because of the racemic poly(DL-lactide) pendants.

    15. Reactive blending of poly(butylene succinate) and poly(triethylene succinate): characterization of the copolymers obtained (pages 1163–1169)

      Michelina Soccio, Nadia Lotti, Matteo Gigli, Lara Finelli, Massimo Gazzano and Andrea Munari

      Article first published online: 26 MAR 2012 | DOI: 10.1002/pi.4195

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      The reactive blending between poly(butylene succinate) and poly(triethylene succinate), gives block copolymers with defined length, which decreases with mixing time. Semicrystalline and amorphous polymers are obtained depending on the block length.

    16. Preparation of composites of laponite with alginate and alginic acid polysaccharides (pages 1170–1176)

      Lucimara C Bandeira, Paulo S Calefi, Katia J Ciuffi, Emerson H de Faria, Eduardo J Nassar, Miguel A Vicente and Raquel Trujillano

      Article first published online: 26 MAR 2012 | DOI: 10.1002/pi.4196

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      Composites of alginate or alginic acid polysaccharides with laponite clay were prepared, showing strong disorder in laponite structure, high polysaccharide contents, and good thermal and mechanical properties.

    17. A new approach for the preparation of hydrophilic poly(L-lactide) porous scaffold for tissue engineering by using lamellar single crystals (pages 1177–1185)

      Ahmed Bakry, Andrea Martinelli, Mariano Bizzarri, Alessandra Cucina, Lucio D'Ilario, Iolanda Francolini, Antonella Piozzi and Sara Proietti

      Article first published online: 30 MAR 2012 | DOI: 10.1002/pi.4197

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      Pristine and hydrolyzed PLLA single crystals were used as building blocks for scaffold assembly. The presence of hydrolyzed lamellae facilitates fibroblast cells growth and infiltration into the scaffold inner pores.

    18. Liquid crystalline properties of cholesteric elastomers based on a mesogenic monomer containing menthyl groups (pages 1186–1192)

      Jian-She Hu, Xia Zhang, Dan Li and Qing-Bao Meng

      Article first published online: 26 MAR 2012 | DOI: 10.1002/pi.4198

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      A new chiral mesogenic monomer containing menthyl groups and cholesteric elastomers were designed, prepared and characterized. The liquid crystalline properties were investigated by DSC, POM, TGA, and XRD.

    19. Methacrylate hydrogels reinforced with bacterial cellulose (pages 1193–1201)

      Radka Hobzova, Miroslava Duskova-Smrckova, Jiri Michalek, Evgeny Karpushkin and Paul Gatenholm

      Article first published online: 26 MAR 2012 | DOI: 10.1002/pi.4199

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      Bacterial cellulose-hydrogel composites were prepared by UV polymerization of various methacrylate monomer/crosslinker mixtures impregnated into of cellulose nanofiber structure. Swelling and mechanical properties in compression and shear mode were characterized.

    20. Synthesis and in vitro biological evaluation as antitumour drug carriers of folate-targeted N-isopropylacrylamide-based nanohydrogels (pages 1202–1212)

      María Dolores Blanco, Marta Benito, Rosa Olmo, César Teijón, Elena Pérez, Issa Katime and José M Teijón

      Article first published online: 30 MAR 2012 | DOI: 10.1002/pi.4200

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      Cellular uptake of folate-targeted N-isopropylacrylamide-based nanohydrogels into cancer cell lines takes place, mainly in cells with folate receptors. Tamoxifen-loaded and 5-fluorouracil-loaded nanohydrogels are efficient in killing MCF7, T47D and Hela cancer cells.

    21. New, organo-soluble, thermally stable aromatic polyimides and poly(amide-imide) based on 2-[5-(3,5-dinitrophenyl)-1,3, 4-oxadiazole-2-yl]pyridine (pages 1213–1220)

      Yagoub Mansoori, Seyed Vahid Atghia, Somyeh Shah Sanaei, Mohammad Reza Zamanloo, Gholamhassan Imanzadeh and Habibollah Eskandari

      Article first published online: 14 MAY 2012 | DOI: 10.1002/pi.4234

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      New polyimides and a poly(amide-imide) were synthesized. The removal of Co(II) from aqueous solutions was performed using polymer 11. The polymer showed maximum adsorption capacity and efficiency at pH = 10.0.

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