摘要
A series of degradable polyesters was synthesized via melt polymerization of 3,6-dioxaoctane-1,8-dioic acid and five different diols,catalyzed by antimony trioxide(Sb_(2)O_(3)).The polymers were characterized by FT-IR and ^(1)H NMR spectroscopy,gel permeation chromatography(GPC)and differential scanning calorimetry(DSC)analysis.The polydispersity index(PDI=M_(w)/M_(n))of the polyesters ranged from 1.55 to 1.99,the weight-average molecular weight(M_(w))from 1.8×10^(4) to 3.2×10^(4) Da,the melting point from 63 to 123℃,and the highest decomposition temperature observed was 363℃.The influence of the structure of the polymer chain on hydrolytic degradability was investigated with tests performed at three different values of pH.The findings obtained provide useful insight for the molecular design and the synthesis of degradable polyesters.
作者
程正载
LI Yi
Lesly Dasilva Wandji Djouonkep
ZENG Sheng
WANG Huan
WANG Linfeng
CAI Shuanpu
LIU Panpan
HU Hai
YANG Yingao
LI Jiaqi
QIN Jisong
Mario Gauthier
CHENG Zhengzai;LI Yi;Lesly Dasilva Wandji Djouonkep;ZENG Sheng;WANG Huan;WANG Linfeng;CAI Shuanpu;LIU Panpan;HU Hai;YANG Yingao;LI Jiaqi;QIN Jisong;Mario Gauthier(Research Institute of Fine Organic Chemicals&Organic Materials at School of Chemistry and Chemical Engineering,Wuhan University of Science and Technology,Wuhan 430081,China;Coal Conversion and New Carbon Materials Hubei Key Laboratory,Wuhan University of Science and Technology,Wuhan 430081,China;Department of Petroleum Engineering,Applied Chemistry in Oil and Gas Fields,Yangtze University,Wuhan 430100,China;Department of Chemistry,University of Waterloo,200 University Avenue West,Waterloo,Ontario N2L3G1,Canada)
基金
Funded by the Program(BG20190227001)of High-end Foreign Experts of the State Administration of Foreign Experts Affairs(SAFEA)
the Coal Conversion and New Carbon Materials Hubei Key Laboratory in Wuhan University of Science and Technology(WKDM201909)。
