Research Progress in Toughening and Crystalline Modification of Poly(lactic acid)

doi:10.19491/j.issn.1001-9278.2020.08.017

Abstract

Abstract:

This paper reviewed the latest research progress in the modification of poly(lactic acid) PLA for nucleation?induced crystallization, stereocomplexation, toughening and heat resistance. The effects of the chemical structure of nucleating agents, rapid stereocomplexation, reactive compatibilization and annealing technology on the physical and mechanical properties of PLA were discussed. Moreover, the applications and development of PLA were prospected.

Key words: poly(lactic acid), nucleation?induced crystallization, stereocomplexation, toughening, heat resistance

CLC Number:

TQ321

Baogou WU, Piming MA, Pengwu XU, Yong ZHANG, Ruyin WANG. Research Progress in Toughening and Crystalline Modification of Poly(lactic acid)[J]. China Plastics, 2020, 34(8): 113-120.

Figures/Tables 6

Fig.1. The self?assembly of the NA and the crystallization phase diagram of PLA

Fig. 2. Crystal morphology and nucleation activity analysis of NCC?g?PLLA/PDLA blends

Fig. 3. Schematic illustration of a proposed core?shell?like structure and the POM images of the PLLA/PHA/NCC?g?PDLA

Fig.4. Impact strength of the PLA/EVA (80/20) blends as a function of VA content in the EVA copolymers

Fig.5. Morphology, notched impact strength and storage modulus of PLA?based nanocomposites

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