Study on Recrystallization Process of Poly(DL-lactide)/Poly(ethylene glycol) Diblock Copolymer

Chen Xiaoqi; Bai Lu; Li Chengyu; Tian Jia; Zhou Haijun; Zhou Mengmeng; Xiao Jijun; Li Yantao

doi:10.1051/matecconf/202235801063

MATEC Web of Conferences (Jan 2022)

Study on Recrystallization Process of Poly(DL-lactide)/Poly(ethylene glycol) Diblock Copolymer

Chen Xiaoqi,
Bai Lu,
Li Chengyu,
Tian Jia,
Zhou Haijun,
Zhou Mengmeng,
Xiao Jijun,
Li Yantao

Affiliations

Chen Xiaoqi: Institute of Energy Source, Hebei Academy of Sciences
Bai Lu: School of Materials Science and Engineering, Hebei University of Science and Technology; Hebei Engineering Laboratory of Aviation Lightweight Composite Materials and Processing Technology; Hebei Key Laboratory of Material Near-Net Forming Technology, Hebei Key Laboratory of Flexible Functional Materials
Li Chengyu: School of Materials Science and Engineering, Hebei University of Science and Technology; Hebei Engineering Laboratory of Aviation Lightweight Composite Materials and Processing Technology; Hebei Key Laboratory of Material Near-Net Forming Technology, Hebei Key Laboratory of Flexible Functional Materials
Tian Jia: School of Materials Science and Engineering, Hebei University of Science and Technology; Hebei Engineering Laboratory of Aviation Lightweight Composite Materials and Processing Technology; Hebei Key Laboratory of Material Near-Net Forming Technology, Hebei Key Laboratory of Flexible Functional Materials
Zhou Haijun: Institute of Energy Source, Hebei Academy of Sciences
Zhou Mengmeng: Institute of Energy Source, Hebei Academy of Sciences
Xiao Jijun: School of Materials Science and Engineering, Hebei University of Science and Technology; Hebei Engineering Laboratory of Aviation Lightweight Composite Materials and Processing Technology; Hebei Key Laboratory of Material Near-Net Forming Technology, Hebei Key Laboratory of Flexible Functional Materials
Li Yantao: Institute of Energy Source, Hebei Academy of Sciences

DOI: https://doi.org/10.1051/matecconf/202235801063
Journal volume & issue: Vol. 358
p. 01063

Abstract

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Poly (DL-lactide)/Poly (ethylene glycol) diblock copolymer is successfully synthesized with mPEG and DL-LA as main raw materials, and the residual monomers of the polymer were removed by recrystallization. FT-IR is used to characterize the structure of the polymer. Gas chromatography is used to determine the residual monomers and residual solvent of the polymer. The solubility of polymer in different solvents was determined, and the effect of different solvent systems on the removal of residual monomers in copolymer were discussed. The results showed that the Poly(DL-lactide)/Poly(ethylene glycol) diblock copolymer was recrystallized with acetone/ isopropyl ether solvent system has the best ability to remove residual monomers, and the residual monomers of the obtained polymer are less than 0.01 wt%, the total residual solvent is only 0.24 wt%, and the productivity is as high as 95.5 wt%.

Published in MATEC Web of Conferences

ISSN: 2261-236X (Online)
Publisher: EDP Sciences
Country of publisher: France
LCC subjects: Technology: Engineering (General). Civil engineering (General)
Website: http://www.matec-conferences.org

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