聚乳酸
结晶
成核
材料科学
生物相容性
生物降解
化学工程
造型(装饰)
高分子
高分子化学
化学
复合材料
有机化学
聚合物
冶金
工程类
生物化学
作者
Xipo Zhao,Jiajie Yu,Xinyu Liang,Zepeng Huang,Juncheng Li,Shaoxian Peng
标识
DOI:10.1016/j.ijbiomac.2023.123581
摘要
Polylactic acid (PLA) has attracted much attention because of its good biocompatibility, biodegradability, and mechanical properties. However, the slow crystallization rate of PLA during molding leads to its poor heat resistance, which limit its diffusion for many industrial applications. In this review, the relationship between PLA crystallization and its molecular structure and processing conditions is summarized. From the perspective of the regulation of PLA crystallization by organic nucleating agents, the research progress of organic micromolecule (e.g., esters, amides, and hydrazides), organic salt, supramolecular, and macromolecule nucleating agents on the crystallization behavior of PLA is mainly introduced. The nucleation mechanism of PLA is expounded by organic nucleating agents, and the effect of the interaction force between organic nucleating agents and PLA molecular chains on the crystallization behavior of PLA is analyzed. The effects of the crystallization behavior of PLA on its mechanical properties and heat resistance are discussed. It will provide a theoretical reference for the development and application of high-efficiency nucleating agents.
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