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Nanoscale-confined crystallization in epoxy resin and polyethylene-block-poly(ethylene oxide) diblock copolymer blends
被引:0
|作者:
Yi Hongling
Wang Xilin
Wei Ting
Lin Heng
Zheng Baicun
机构:
[1] East China University of Science and Technology,Research and Development Center for Advanced Sports Materials
来源:
关键词:
Polymer blends;
Polyethylene-;
poly(ethylene oxide);
Epoxy resin;
Crystallization kinetics;
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学科分类号:
摘要:
In this paper, the nanoscale-confined crystallization behavior and crystallization kinetics in blends of double-crystalline polyethylene-block-poly(ethylene oxide) (PE-b-PEO) diblock copolymer with diglycidyl ether of bisphenol A epoxy resin were investigated. The results showed that there appeared three crystallization regimes related to the crystallization of the PE block within three different microenvironments in the epoxy resin/PE-b-PEO blends. The Avrami index n is around 1.8–2.4, suggesting PE block of the copolymer in the blends exhibited nanoscale-confined crystallization behavior by homogeneous nucleation. The PE block nanoscale-confined crystallization is ascribed to the formation of the strong intermolecular hydrogen bonding interaction between hydroxyl groups of amine-cured epoxy and ether oxygen atoms of PEO, as seen from Fourier transform infrared spectroscopy spectra.
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页码:1347 / 1352
页数:5
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