Journal
CHINESE JOURNAL OF POLYMER SCIENCE
Volume 34, Issue 9, Pages 1141-1149Publisher
SPRINGER
DOI: 10.1007/s10118-016-1823-3
Keywords
Polybutene-1; Crystal transformation; Solvent vapor annealing
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Funding
- Special Foundation of Taishan Mountain Scholar Constructive Program
- National Natural Science Foundation of China [21174074]
- Shandong Provincical Key R D Program [2015GGX102019]
- Shandong Provincial Natural Science Fund for Distinguished Young Scholars [JQ201213]
- Nature Science Foundation of Shandong Province [ZR2013BM004]
- Yellow River Delta Scholar program (Office of National University Science & Technology Park Administrative Committee (China University of Petroleum))
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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.
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