Nanostructures and thermomechanical properties of epoxy thermosets containing reactive diblock copolymer |
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| Authors: | Zhiguang Xu Nishar Hameed Qipeng Guo Yiu‐Wing Mai |
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| Affiliation: | 1. Centre for Material and Fibre Innovation, Deakin University, Geelong 3217, Victoria, Australia;2. Centre for Advanced Materials Technology (CAMT), School of Aerospace, Mechanical and Mechatronic Engineering J07, University of Sydney, Sydney 2006, New South Wales, Australia |
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| Abstract: | Polystyrene‐block‐poly(glycidyl methacrylate) reactive diblock copolymer (PS‐b‐PGMA) was synthesized via atom transfer radical polymerization (ATRP). The diblock copolymer was characterized using nuclear magnetic resonance (NMR) spectroscopy and gel permeation chromatography (GPC). The cured epoxy thermosets with 10–20 nm PS particles were prepared by blending the diblock copolymer with epoxy resin. The nanostructures were examined by means of transmission electronic microscopy (TEM) and small angle X‐ray scattering (SAXS). The formation of the nanostructures was caused by the reaction‐induced microphase separation mechanism. It is significant that the glass transition temperatures (Tgs) of these epoxy thermosets were increased by the addition of PS‐b‐PGMA reactive block copolymer as revealed by both differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA). © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010 |
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| Keywords: | epoxy resin reactive block copolymer blends thermomechanical properties |
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