期刊
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
卷 47, 期 1, 页码 161-169出版社
WILEY
DOI: 10.1002/pola.23134
关键词
biodegradable; cinnamate; functionalization of polymers; photo-crosslinking; polycarbonate
资金
- National Natural Science Foundation of China [20674084, 20774093, 50733003]
- National Fund for the Distinguished Young Scholars [50425309]
A functionalized. cyclic carbonate monomer containing a cinnamate moiety, 5-methyl-5-cinnamoyloxymethyl-1,3-dioxan-2-one (MC), was prepared for the first time with 1,1,1-tri(hydroxymethyl) ethane as a starting material. Subsequent polymerization of the new cyclic carbonate and its copolymerization with L-lactide (LA) were successfully performed with diethyl zinc (ZnEt2) as initiator/catalyst. NMR was used for microstructure identification of the obtained monomer and copolymers. Differential scanning calorimetry (DSC) was used to characterize the functionalized poly(ester-carbonate). The results indicated that the copolymers displayed a single glass transition temperature (T-g) and the T, decreased with increasing carbonate content and followed the Fox equation, indicative of a random microstructure of the copolymer. The photo-crosslinking of the cinnamate-carrying copolymer was also demonstrated. (c) 2008 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 47: 161-169, 2009
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