Research of Biomass Nucleating Agents for Polylactic Acid

doi:10.19491/j.issn.1001-9278.2020.06.017

Abstract

Abstract:

Nucleating agents play a very important role in the crystallization of polylactic acid (PLA). This paper introduced the crystallization mechanisms of PLA and the development status of biomass nucleating agents for PLA in China and overseas. These biomass nucleating agents included polysaccharide (starch, cellulose, chitin, chitosan and cyclodextrin), phenol (lignin), alcohol (inositol), protein (amino acid) and carboxylic acid (orotic acid). Furthermore, the problems in the applications of biomass nucleating agents for PLA were analyzed, and their development in the future was prospected.

Key words: polylactic acid, biomass, nucleating agent

CLC Number:

TQ321

Qiming CAO, Xin MENG, Weiguang GONG, Chenyang LI, Zhongyang YAO. Research of Biomass Nucleating Agents for Polylactic Acid[J]. China Plastics, 2020, 34(6): 110-117.

Figures/Tables 11

Fig.1. The structure of Lactide and lactic acid

Fig.2. Crystal structure model of PLA

Fig.3. Steps of starch coupling reaction with CPMS and melt blend

Fig.4. Schematic drawing (not to scale) of CNC

Fig.5. Chemical structure of chitin

Fig.6. Chemical structure of chitosan

Fig. 7. Schematic diagram of inclusion complex formation process

Fig.8. POM image of PLA?IC at 125 ℃

Fig. 9. Monolignol chemical structures of LIG

Fig.10. The structures of nine isomers of inositols

Fig. 11. Structure of OA

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