期刊
CHINESE CHEMICAL LETTERS
卷 28, 期 2, 页码 354-357出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.cclet.2016.10.014
关键词
Poly(butylene succinate) (PBS); Slightly cross-linking; Diacetylene group; Crystallization property; Rheological behaviour
资金
- National Natural Science Foundation of China [21634006, 51121001]
- Program for Changjiang Scholars and Innovative Research Teams in University of China [IRT1026]
A cross-linkable comonomer containing a diacetylene group, named dimethyl 4,4'-(buta-1,3-diyne-1,4-diyl)dibenzoate (DA) was synthesized and copolymerized with dimethyl succinate and 1,4-butanediol to prepare a series of slightly cross-linked PBS copolyesters (PBDAS chi). The chemical structure, crystallization and rheological behaviours of PBDAS chi were well investigated. Compared to neat PBS, PBDAS chi showed the greatly increased crystallization rate because of the promoting nucleation of the cross-linking domains, and the XRD results indicated that it had no influence on crystallization structure of PBS. The rheological behaviours indicate that PBDAS chi possessed higher viscosity than neat PBS even at high shear rate and temperature. PBDAS0.3 exhibited better comprehensive properties than neat PBS, which will widen applications of PBS. (C) 2016 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.
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