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Indexed by:期刊论文

Date of Publication:2012-02-01

Journal:POLYMER DEGRADATION AND STABILITY

Included Journals:SCIE、EI、Scopus

Volume:97

Issue:2

Page Number:185-191

ISSN No.:0141-3910

Key Words:Aliphatic polyesters; Chain-growth polycondensation; Degradation; Liquid crystallinity; Thermal crosslinking

Abstract:Novel biodegradable-cum-crosslinkable polyesters end-capped by biomesogenic units, cinnamic acid (CA) and ferulic acid (FA), were synthesized via chain-growth polycondensation in solid liquid phase. The chemical structure of synthesized polymers was characterized by Fourier transform infrared spectroscopy (FT-IR) and proton nuclear magnetic resonance spectroscopy (H-1 NMR). The composition of polyesters, which was calculated by H-1 NMR, was in agreement with the feed ratios. The thermal properties and crystallinity of polyesters were measured by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), wide angle X-ray diffraction (WXRD) and polarizing-light microscopy (PLM). It was found that the polyesters possessed good crystallinity. Furthermore, the obtained polyesters could be crosslinked with methyl methacrylate (MMA), n-butyl acrylate (BA) and styrene (St) under thermal condition. The crosslinked products possessed degradability in phosphate buffer solution at 37 degrees C, which might be potentially applied as biomaterials. (C) 2011 Published by Elsevier Ltd.