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《高分子科学(英文版)》 2016-09
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Solvent Vapor Annealing Induced Polymorphic Transformation of Polybutene-1

Hua-feng Shao;Ya-ping Ma;Hua-rong Nie;Ai-hua He;Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization, Key Laboratory of Rubber-Plastics (Ministry of Education), School of Polymer Science and Engineering, Qingdao University of Science and Technology;  
Solvent annealing is a facile method for changing the aggregated microstructure and physical properties of polymer materials. In this paper, we addressed the effects of solvent vapor annealing, including chloroform and water vapor,on the polymorphic transformation in both hot-pressed film and electrospun nonwoven of isotactic polybutene-1(PB-1) by means of in situ Fourier transform infrared spectroscopy(FTIR). The pretty rapid transition rate caused by the increased motion of molecular chains under chloroform vapor is associated with a lowest crystallinity. Also, a decreased crystallinity with the crystal transition occurred in electrospun nonwovens resulting from the relaxation of the stretched molecular chains into amorphous state rather than realignment into crystal form I predominating the crystal transition process.
【Fund】: financially supported by the Special Foundation of Taishan Mountain Scholar Constructive Program;; the National Natural Science Foundation of China(No.21174074);; Shandong Provincical Key R&D Program(No.2015GGX102019);; Shandong Provincial Natural Science Fund for Distinguished Young Scholars(No.JQ201213);; the Nature Science Foundation of Shandong Province(No.ZR2013BM004);; the Yellow River Delta Scholar program(Office of National University Science&Technology Park Administrative Committee(China University of Petroleum))
【CateGory Index】: TQ325.15
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