Macromolecular Materials and Engineering

Cover image for Vol. 298 Issue 7

July 2013

Volume 298, Issue 7

Pages 709–813

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      Macromol. Mater. Eng. 7/2013 (page 709)

      Malaya R. Nanda, Manjusri Misra and Amar K. Mohanty

      Version of Record online: 4 JUL 2013 | DOI: 10.1002/mame.201370021

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      Cover: Green composites can substitute for conventional polymer/synthetic fiber composites since they offer an attractive route to environmental waste management. However, there is a great concern about the supply chain of biofibers for the industrial fabrication of green composites. The hybrid biofibers may offer a solution to overcome this concern. In the present study, the mechanical performance of green composites of different biofibers and their hybrids is evaluated to measure their suitability for different applications. Further details can be found in the article by M. R. Nanda,* M. Misra, and A. K. Mohanty on page 779.

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    1. Macromol. Mater. Eng. 7/2013 (page 710)

      Version of Record online: 4 JUL 2013 | DOI: 10.1002/mame.201370022

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    1. Macromol. Mater. Eng. 7/2013 (pages 711–714)

      Version of Record online: 4 JUL 2013 | DOI: 10.1002/mame.201370023

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    1. Hybrid Organic-Inorganic Membranes on Porous Supports by Size Exclusion and Thermal Sintering of Fluorescent Polyphenylsilsesquioxane Nanoparticles (pages 715–721)

      Zhe Li, Stephanie Tolbert and Douglas A. Loy

      Version of Record online: 23 OCT 2012 | DOI: 10.1002/mame.201200091

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      Hybrid organic-inorganic membranes are prepared by size exclusion deposition and sintering of polyphenylsilsesquioxane particles at 300 °C on zirconia–titania supports. Confocal fluorescence microscopy of the membrane cross-section clearly shows that the fluorescence labeled particles form a distinct layer on top of the mesoporous support.

    2. Temperature Evolution During Processing of Thick-Walled Anionic Polyamide 6 Composites: Experiment and Simulation (pages 722–729)

      Julie J. E. Teuwen, Ab A. van Geenen and Harald E. N. Bersee

      Version of Record online: 30 OCT 2012 | DOI: 10.1002/mame.201200083

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      A 1-D through-the-thickness transient heat transfer model is build to simulate the cure process of thick-walled APA-6 composites. Kinetic models describing the polymerisation behaviour of APA-6 are implemented into the model and the results are compared with experimentally obtained results. It is found that the predicted temperature profiles agree well with the experimental data.

    3. Tunable PLGA-Based Nanoparticles Synthesized Through Free-Radical Polymerization (pages 730–739)

      Raffaele Ferrari, Claudio Colombo, Marco Dossi and Davide Moscatelli

      Version of Record online: 13 SEP 2012 | DOI: 10.1002/mame.201200069

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      A two-step synthesis process is applied to produce PLGA-based nanoparticles through FRP. The first step involves ROP to produce short-length PLGA chain that are functionalized with a vinyl end group that has been further polymerized through emulsion polymerization to yield small-polymer nanoparticles of ≈60 nm and a narrow PSD.

    4. Monomers for Adhesive Polymers, 10-Synthesis, Radical Photopolymerization and Adhesive Properties of Methacrylates Bearing Phosphonic Acid Groups (pages 740–756)

      Yohann Catel, Urs Karl Fischer and Norbert Moszner

      Version of Record online: 29 AUG 2012 | DOI: 10.1002/mame.201200196

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      New methacrylates bearing phosphonic acid groups 4ac, 8, 11, 14, 18, and 23 are prepared. These monomers are evaluated in terms of free radical homopolymerization reactivity, photopolymerization behaviors, interaction with hydroxyapatite and adhesive properties. Adhesives based on monomers 4b, 18, and 23 are particularly promising and were able to mediate a strong bond between dentin and a restorative material.

    5. Compatibilization of Immiscible Polymer Blends by Organoclay: Effect of Nanofiller or Organo-Modifier? (pages 757–770)

      Mohamed Yousfi, Jérémie Soulestin, Bruno Vergnes, Marie-France Lacrampe and Patricia Krawczak

      Version of Record online: 18 SEP 2012 | DOI: 10.1002/mame.201200138

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      What is the contribution of organoclay surfactant to the morphology refinement of polymers? The comparison of immiscible polymer blends morphologies (PET/PE) containing organoclays and corresponding blends with surfactant alone evidence the role of surfactant at clay surface. The morphology of the blends is intimately correlated to the presence of surfactant, even without clay, and its polarity.

    6. Synthesis of Fluorescent PMMA-Based Nanoparticles (pages 771–778)

      Marco Dossi, Raffaele Ferrari, Luca Dragoni, Carlotta Martignoni, Paolo Gaetani, Maurizio D'Incalci, Massimo Morbidelli and Davide Moscatelli

      Version of Record online: 28 AUG 2012 | DOI: 10.1002/mame.201200122

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      The synthesis of PMMA-based nanoparticles is developed via emulsion free radical polymerization to obtain NPs with narrow polydispersity index and controllable average size from 20 to 150 nm to cover different types of applications. In addition a fluorescent dye (Rhodamine B) is irreversibly bonded to the NPs as to function as reliable indicator of the presence of the NPs.

    7. Performance Evaluation of Biofibers and Their Hybrids as Reinforcements in Bioplastic Composites (pages 779–788)

      Malaya R. Nanda, Manjusri Misra and Amar K. Mohanty

      Version of Record online: 19 SEP 2012 | DOI: 10.1002/mame.201200112

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      Green composites receive attention as substitutes for conventional polymer/synthetic fiber composites. Here, the performance of green composites reinforced by hybrid fibers from natural sources is studied and compared. It is demonstrated that the use of agricultural residues may reduce supply chain concerns for green composites with superior properties.

    8. A New Class of Injection Moulded Structural Biocomposites from PHBV Bioplastic and Carbon Fibre (pages 789–795)

      Jeevan Prasad Reddy, Sandeep Ahankari, Manjusri Misra and Amar Mohanty

      Version of Record online: 6 NOV 2012 | DOI: 10.1002/mame.201200087

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      Carbon fibre reinforced PHBV composites are prepared by conventional melt mixing technique. The mechanical and thermo-mechanical, properties of the composites are studied by varying the fibre length and fibre loading. The increase in carbon fibre aspect ratio and fibre loading improves the mechanical and thermo-mechanical properties of the composites.

    9. Effect of Clay Modification on the Mechanism of Local Deformations in PA6 Nanocomposites (pages 796–805)

      Zita Dominkovics, Elodie Naveau, Christine Jérôme, József Hári, Károly Renner, János Móczó, Michaël Alexandre and Béla Pukánszky

      Version of Record online: 25 SEP 2012 | DOI: 10.1002/mame.201200244

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      The study of local deformations in PA6 nanocomposites shows that several micromechanical processes take place during deformation: cavitation and yielding of the matrix polymer, particle fracture and debonding. They are influenced by interfacial adhesion, silicate content and particle size. The various local deformations are independent of each other and composite properties are not determined by silicate related processes but by the deformation of the matrix.

    10. A Core@sheath Nanofibrous Separator for Lithium Ion Batteries Obtained by Coaxial Electrospinning (pages 806–813)

      Zhihong Liu, Wen Jiang, Qingshan Kong, Chuanjian Zhang, Pengxian Han, Xuejiang Wang, Jianhua Yao and Guanglei Cui

      Version of Record online: 19 SEP 2012 | DOI: 10.1002/mame.201200158

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      A PI@PVDF-HFP nonwoven separator for use in lithium ion batteries is developed using a coaxial electrospinning process. Its considerable mechanical strength, high thermal stability and superior rate capability make this kind of core@sheath nanofibrous nonwoven a promising candidate for use in higher-power applications with improved battery safety.

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