Formation of fibril structures in polymerizable, rod-coil-oligomer-modified epoxy networks.
作者：Yu, Y. F.*; Gao, Z. Y.; Zhan, G. Z.; Li, L.; Li, S. J.; Gan, W. J.; Crivello, J. V
關(guān)鍵字：rod-coil oligomer, polymerization, microphase separation, fibril structure
論文來源：期刊
具體來源：Chemistry-a European Journal 2007, 13, (10), 2920-2928.
發(fā)表時(shí)間：2007年
This paper describes the in situ preparation of fibrils in epoxy networks in which the fibril-like structures are cured polymerizable rod-coil oligomers. The epoxy-terminated alpha, omega-modified PEO oligomers, which are ABA rod-coil-rod oligomers with a poly(ethylene oxide) coil unit and two aromatic azomethine liquid-crystalline rod units, were synthesized and then further blended with an epoxy precursor. Uniform nanoscale columnar structures were observed in the peat rod-coil oligomers as well as in the crosslinked liquid-crystalline state. During the curing of the blends, the supra-molecular nanoscale columnar structures of the rod-coil oligomers are transformed into polymeric fibrils where the epoxy functional end groups have co-reacted with epoxy precursors to form a crosslinked network.
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