A Potential Alternative to Polystyrene: Ring-opening Terpolymerization of Different Epoxides with Phthalic Anhydride Using Metal-free Dual Catalysts  

作　　者：Li-Miao Lin Yong-Hang Xu Man Shen Jia-Xin Liang Shuan-Jin Wang Min Xiao Yue-Zhong Meng 

机构地区：[1]The Key Laboratory of Low-carbon Chemistry&Energy Conservation of Guangdong Province/State Key Laboratory of Optoelectronic Materials and Technologies,School of Materials Science and Engineering,Sun Yat-sen University,Guangzhou 510275,China [2]School of Environmental and Chemical Engineering,Foshan University,Foshan 528000,China [3]School of Materials Science&Energy Engineering,Foshan University,Foshan 528000,China

出　　处：《Chinese Journal of Polymer Science》2021年第3期337-343,I0006,共8页高分子科学（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (No. 51673131);the Fundamental Research Funds for the Central Universities (No.171gjc37)。

摘　　要：A series of semi-aromatic polyesters named as Poly(PO-CHO-PA) were facilely synthesized via ring-opening terpolymerization of biobased cyclohexane oxide(CHO)/propylene oxide(PO)/phthalic anhydride(PA) using economical U1/PPNCl as dual catalyst. The proportion of CHO-PA and PO-PA segments in polymer can be readily altered by changing the feed ratio of CHO/PO because the reactivity ratios of CHO and PO with PA calculated by Fineman-Ross method are comparable. All synthesized amorphous polyesters with various compositions show one Tg ranging from 62 ℃ to 133 ℃. Significantly, the mechanical, thermal and barrier properties of these amorphous semi-aromatic polyesters are also adjustable and investigated for the first time. The results indicate the semi-polyesters exhibit superior thermostability(T5% ranging from 306 ℃ to323 ℃) and high tensile strength(40.21-55.7 MPa) that is comparable with polystyrene(PS). Furthermore, Poly(PO-CHO-PA) films possess a promising prospect as packaging materials because of its colorless and highly transparent nature, along with low oxygen and water vapor transmission rate. All above performances may guarantee its potential alternative to commercial PS.

关 键 词：Aromatic polyester Ring-opening polymerization Metal-free catalyst POLYSTYRENE Barrier properties 

分 类 号：TQ316.341[化学工程—高聚物工业] TQ426