Citation: Jing-shu Wu, Min Xiao, Hu He, Shuan-jin Wang, Dong-mei Han and Yue-zhong Meng. SYNTHESIS AND CHARACTERIZATION OF HIGH MOLECULAR WEIGHT POLY(1,2-PROPYLENE CARBONATE-co-1,2-CYCLOHEXYLENE CARBONATE) USING ZINC COMPLEX CATALYST[J]. Chinese Journal of Polymer Science, ;2011, 29(5): 552-559. doi: 10.1007/s10118-011-1078-y shu

SYNTHESIS AND CHARACTERIZATION OF HIGH MOLECULAR WEIGHT POLY(1,2-PROPYLENE CARBONATE-co-1,2-CYCLOHEXYLENE CARBONATE) USING ZINC COMPLEX CATALYST

Received Date: 27 August 2010
Revised Date: 23 November 2010

Fund Project: This work was financially supported by the China High-Tech Development 863 Key Program (No. 2010AA0349), Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2010), Guangdong Province Sci. Tech. Bureau (Key Strategic Project Grant No. 2008A080800024), Guangdong Education Bureau (Key Project) and Chinese Universities Basic Research Founding.

Using supported multi-component zinc dicarboxylate catalyst, poly(1,2-propylene carbonate-co-1,2-cyclohexylene carbonate) (PPCHC) was successfully synthesized from carbon dioxide (CO2) with propylene oxide (PO) and cyclohexene oxide (CHO). The conversion of epoxides dramatically increased up to 89.7% (yield: 384.2 g of polymer per g of Zn) with increasing reaction temperature from 60C to 80C. The optimized reaction temperature is 80C. The chemical structure, the molecular weight, as well as thermal and mechanical properties of the resulting terpolymers were investigated extensively. When CHO feed content (mol%) is lower than 10%, the PPCHC terpolymers have number average molecular weight (Mn) ranging from 102 103 to 202 103 and molecular weight distribution (MWD) values ranging from 2.8 to 3.5. In contrast to poly(propylene carbonate) (PPC), the introduction of small amount of CHO leads to increase in the glass transition temperature from 38.0C to 42.6C. Similarly, the mechanical strength of the synthesized terpolymer is greatly enhanced due to the incorporation of CHO. These improvements in mechanical and thermal properties are of importance for the practical application of PPC.
- Carbon dioxide,
- Cyclohexene oxide,
- Catalysis,
- Terpolymerization,
- Propylene oxide
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