Preparation of High Heat Resistance Polylactide by Stereocomplexation

doi:10.11944/j.issn.1000-0518.2016.09.150456

Chinese Journal of Applied Chemistry ›› 2016, Vol. 33 ›› Issue (9): 1033-1039.DOI: 10.11944/j.issn.1000-0518.2016.09.150456

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Preparation of High Heat Resistance Polylactide by Stereocomplexation

SUN Bin^a^b^c,LIU Yanlong^a^b,BIAN Xinchao^a^b^*(),ZHANG Bao^a,ZHOU Linyao^a,FENG Lidong^a^b,LI Gao^a^*(),CHEN Zhiming^b

^aChangchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China
^bZhejiang Hisun Biomaterials Co.,Ltd, Taizhou,Zhejiang 318000,China
^cUniversity of Chinese Academy of Sciences,Beijing 100039,China

Received:2015-12-22 Accepted:2016-03-29 Published:2016-08-23 Online:2016-08-23
Contact: BIAN Xinchao,LI Gao
Supported by:
Supported by the National Natural Science Foundation of China (No.51373169,No.51273198,No.51103153,No.51033003,No.51403199,No.21004066), Innovative Research Group (No.51321062) and The National High-tech R&D Program of China (863 program) (No.2011AA02A202,No.2015AA034004)

Abstract

Abstract:

The stereocomplex powder was prepared by mixing the same amount of poly(L-lactide)(PLLA) and poly(D-lactide)(PDLA) resins at a relative low temperature and then was mixed with the nucleation agent and glass fiber. The mixture was molded in the injection machine, followed by annealing at different temperatures to form the blends with high heat resistance. The vicat softening temperature reached to 165 ℃ and the DSC results revealed that the blends were rich in stereocomplex and the enthalpy was as high as 27.6 J/g. Moreover, the tensile strength was increased greatly to 129 MPa.

Key words: polylactide, heat resistance, stereocomplexation, crystallization, vicat softening temperature

SUN Bin, LIU Yanlong, BIAN Xinchao, ZHANG Bao, ZHOU Linyao, FENG Lidong, LI Gao, CHEN Zhiming. Preparation of High Heat Resistance Polylactide by Stereocomplexation[J]. Chinese Journal of Applied Chemistry, 2016, 33(9): 1033-1039.

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Preparation of High Heat Resistance Polylactide by Stereocomplexation

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