Formation of fibril structures in polymerizable, rod-coil-oligomer-modified epoxy networks.
writer：Yu, Y. F.*; Gao, Z. Y.; Zhan, G. Z.; Li, L.; Li, S. J.; Gan, W. J.; Crivello, J. V
keywords：rod-coil oligomer, polymerization, microphase separation, fibril structure
source：期刊
specific source：Chemistry-a European Journal 2007, 13, (10), 2920-2928.
Issue time：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.
此文被BioMedLib統(tǒng)計(jì)為該文發(fā)表后此領(lǐng)域的前十名文章中的第一名。