Macromolecular Materials and Engineering

Cover image for Vol. 298 Issue 12

December 2013

Volume 298, Issue 12

Pages 1245–1364

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      Macromol. Mater. Eng. 12/2013 (page 1245)

      Palanikkumaran Muthiah, Timothy J. Boyle and Wolfgang Sigmund

      Version of Record online: 11 DEC 2013 | DOI: 10.1002/mame.201370036

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      Cover: Cover: Rapid response characteristics of polystyrene/poly(N-isopropylacrylamide) blended nanofiber mats fabricated by electrospinning process is shown by placing a droplet (dye solution) on top of the fiber mat surface with their contact angle changing images. The fiber mat switches from superhydrophobic to superhydrophilic state in few seconds in response to changes in environmental temperature. Further details can be found in the article by Palanikkumaran Muthiah,* Timothy J. Boyle, and Wolfgang Sigmund on page 1251.

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    1. Macromol. Mater. Eng. 12/2013 (page 1246)

      Version of Record online: 11 DEC 2013 | DOI: 10.1002/mame.201370037

  3. Contents

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    2. Cover Picture
    3. Masthead
    4. Contents
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  4. Communication

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    1. Thermally Induced, Rapid Wettability Switching of Electrospun Blended Polystyrene/Poly(N-Isopropylacrylamide) Nanofiber Mats (pages 1251–1258)

      Palanikkumaran Muthiah, Timothy J. Boyle and Wolfgang Sigmund

      Version of Record online: 18 APR 2013 | DOI: 10.1002/mame.201200411

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      Polystyrene/poly(N-isopropylacrylamide) blended fiber mats with fiber diameters ranging between 380, 990, 1500, and 16 × 103 nm were studied to determine their influence on response time to change from maximum to minimum contact angle. Response time is 4–5 s on 380, 990, 1500 diameter fibers; whereas, it is more than five times slower on 16 × 103 diameter fiber.

  5. Full Papers

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    1. Blends of Plasticized Polyvinyl Butyral and Polyvinyl Chloride: Morphology Analysis in View of Recycling (pages 1259–1268)

      Amine Bendaoud, Christian Carrot, Jordan Charbonnier and Caroline Pillon

      Version of Record online: 10 MAY 2013 | DOI: 10.1002/mame.201200420

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      Blends of plasticized polyvinyl butyral (PVB) with plasticized polyvinyl chloride can be used for flooring applications. This offers a recycling route for PVB wastes from safety glasses. The morphology development during melt blending is investigated. The dimension of phases is defined by abalance between break-up and coalescence. Equations already known for drop splitting have been generalized when rupture occurs by fibrillation and capillary instability.

    2. In Situ Mechanical Characterization of Short Vegetal Fibre-Reinforced High-Density Polyethylene Using X-Ray Tomography (pages 1269–1274)

      Belkhiri Kaouache, Frédéric Addiego, Jean-Marie Hiver, Olivier Ferry, Valérie Toniazzo and David Ruch

      Version of Record online: 7 MAY 2013 | DOI: 10.1002/mame.201200428

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      X-ray tomography enables the study of the matrix/fibres debonding mechanisms of high-density polyethylene/hemp fibres composites subjected to in situ tensile testing. These damage mechanisms start along fibres oriented perpendicular to the tensile direction and at the tips of fibres oriented parallel to tensile direction, characterized by the formation of micro-cracks. With increasing strain, micro-cracks grow, propagate and coalesce.

    3. Dynamics in Poly(ϵ-Caprolactone) Containing Phase Separated Epoxy Thermosets (pages 1275–1281)

      Hendrik Lützen and Andreas Hartwig

      Version of Record online: 7 MAY 2013 | DOI: 10.1002/mame.201200435

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      Dynamic phase separation processes are shown in poly(ϵ-caprolactone) containing epoxy thermosets. The formation of well distributed PCL-domains in the highly crosslinked epoxy matrix is driven by gradually increasing crystalline interactions, leading to heterogeneous polymers. A strong increase in the mechanical properties is observed during the separation process.

    4. Fabrication and Characterisation of Microgel/Polymer Composite Microfibres (pages 1282–1293)

      Dominic Kehren and Andrij Pich

      Version of Record online: 10 MAY 2013 | DOI: 10.1002/mame.201300024

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      Composite microfibres based on poly(vinyl alcohol) (PVA) and poly(N-vinylcaprolactam) microgels are fabricated by an electrospinning process. Obtained composite microfibres with variable compositions and morphologies are non-toxic, temperature-sensitive and exhibit superior swelling properties.

    5. Thermosetting Proteinaceous Plastics from Hydrolyzed Specified Risk Material (pages 1294–1303)

      Tizazu Mekonnen, Paolo Mussone, Nayef El-Thaher, Phillip Y. K. Choi and David C. Bressler

      Version of Record online: 10 MAY 2013 | DOI: 10.1002/mame.201200429

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      The bovine spongiform encephalopathy (BSE) outbreak in the last decade has led several countries to implement a ban that eliminates certain cattle tissues, known as specified risk materials (SRMs), from all animal feed, pet foods, and fertilizer applications. In this research, SRM is hydrolyzed at sub-critical conditions to break down BSE causing agents, recover safe protein hydrolyzates, and a novel technology platform is developed to convert it into plastics.

    6. UV-Cured Epoxy–Zno Composites: Preparation and Characterization (pages 1304–1308)

      Marco Sangermano, Federica Sordo, Mario Giovine and Galder Kortaberria

      Version of Record online: 10 MAY 2013 | DOI: 10.1002/mame.201200444

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      Epoxy–ZnO composites are prepared via UV-induced cationic polymerization. Electrical characterization of the cured materials shows that both permittivity and AC conductivity values increase with nanofiller content, especially for the highest contents.

    7. Dependence of the Morphological Location of the Brittle/Tough Transition on the Modulus of the Dispersed Phase (pages 1309–1314)

      Asier Zabaleta, Imanol González and José Ignacio Eguiazábal

      Version of Record online: 10 APR 2013 | DOI: 10.1002/mame.201200454

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      The dispersed phase of the PP/mPEO blend is modified by means of nanoclay addition via melt mixing. Due to the high affinity of the nanoclay to the maleic anhydride groups of mPEO, the nanoclay stays only in the dispersed rubbery phase. The nanoclay presence causes a displacement of the B/T transition, showing that the stiffer the dispersed rubbery phase is, the larger the rubber content necessary for the B/T transition to occur.

    8. PtBS-b-P4VP and PTMSS-b-P4VP Isoporous Integral-Asymmetric Membranes with High Thermal and Chemical Stability (pages 1315–1321)

      Janina Hahn, Volkan Filiz, Sofia Rangou, Brigitte Lademann, Kristian Buhr, Juliana I. Clodt, Adina Jung, Clarissa Abetz and Volker Abetz

      Version of Record online: 3 MAY 2013 | DOI: 10.1002/mame.201300012

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      Tailor-made poly(4-tert-butylstyrene) and poly(4-trimethylsiliylstyrene)-block-poly(4-vinylpyridine) are used to prepare isoporous integral-asymmetric membranes. Efficient membrane production is achieved through the combination of the self-assembly of amphiphilic block copolymers and the non-solvent induced phase inversion. Membranes feature high stability to thermal and chemical stresses.

      Corrected by:

      Correction: PtBS-b-P4VP and PTMSS-b-P4VP Isoporous Integral-Asymmetric Membranes with High Thermal and Chemical Stability

      Vol. 299, Issue 6, 764, Version of Record online: 5 JUN 2014

    9. Functionalized Graphene and Carbon Materials as Additives for Melt-Extruded Flame Retardant Polypropylene (pages 1322–1334)

      Daniel Hofmann, Karen-Alessa Wartig, Ralf Thomann, Bettina Dittrich, Bernhard Schartel and Rolf Mülhaupt

      Version of Record online: 17 APR 2013 | DOI: 10.1002/mame.201200433

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      Functionalized graphenes represent attractive additives for improving the performance of flame retardant polypropylene. In a comparison of isotropic, tubular and sheet-like carbon fillers, the highly effective functionalized graphene dispersion accounts for simultaneously improved stiffness, electrical conductivity, and enhanced flame retardancy of flame retardant polypropylene. Moreover, additive performance rises by a decreasing number of graphene layers.

    10. Comparing Leaching of Different Copper Oxide Nanoparticles and Ammoniacal Copper Salt from Wood (pages 1335–1343)

      Xiaochu Ding, Martha Barajas Meneses, Soha M. Albukhari, Dana L. Richter, Laurent M. Matuana and Patricia A. Heiden

      Version of Record online: 10 MAY 2013 | DOI: 10.1002/mame.201200439

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      Wood specimens are treated with 10 and 50 nm CuO nanoparticles, and a soluble copper salt as a control. Wood treated with 10 nm nanoparticles leaches more copper than the control, and many nanoparticles are found in the leachate. Wood treated with 50 nm CuO nanoparticles leaches less than the control, but nanoparticles are still found in the leachate. Polymer stabilizers enhance leaching.

    11. Towards Tailored Porous Polymers Using Solvent Effects in Catalytic Degradation (pages 1344–1349)

      Kyra L. Sedransk, James McGregor, Jonathan Mitchell and Geoffrey D. Moggridge

      Version of Record online: 4 JUN 2013 | DOI: 10.1002/mame.201200418

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      The exploitation of solvent effects in a one-pot catalytic etching of block copolymers is demonstrated to produce tunable porous polymers with controllable physical properties, including pore structure. This presents a novel alternative to existing technologies.

    12. Role of Phase Morphology on the Damage Initiated Self-healing Behavior of Ionomer Blends (pages 1350–1364)

      Mohammed Arifur Rahman, Gloria Spagnoli, Antonio Mattia Grande and Luca Di Landro

      Version of Record online: 19 MAR 2013 | DOI: 10.1002/mame.201200399

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      Materials with intrinsic self-healing properties based on polymer blends have found very scant attention by the researchers. This research work gives insight to the fact that new self-healing materials can be developed by controlling the phase morphology through a proper blending strategy. The polymer blends, developed in this research work, exhibit good self-healing efficiency following ballistic damages.

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