Research Progress in the Modification and Applications of 3D Printed Polylactic Acid

被引：0
|
作者：
Zheng S. [1 ]
Li W. [1 ]
Yang H. [1 ]
Chen S. [2 ]
Wei Q. [1 ]
机构：
[1] College of Textile Science and Engineering, Jiangnan University, Jiangsu, Wuxi
[2] Jiangsu Susi Silk Joint Stock Co., Jiangsu, Suqian
来源：
Cailiao Daobao/Materials Reports | 2024年 / 38卷 / 08期
关键词：
3D printing; hydrolysis resistance; mechanical property; polylactic acid; thermal property;
D O I：
10.11896/cldb.22100107
中图分类号：
学科分类号：
摘要：
Polylactic acid(PLA)is a biodegradable thermoplastic polyester,which is one of the most promising biodegradable materials. PLA is an ideal 3D printing material with excellent mechanical properties,good plasticity,and biocompatibility. 3D printed PLA materials exhibit high potential in various fields,particularly in biomedical and tissue engineering. However,the inherent brittleness,poor heat-resistance,and inferior hydrolysis resistance limit the applications of PLA materials. Recently,scholars have conducted a number of studies to improve properties of 3D printed PLA. This article summarizes the research progress of 3D printing of PLA materials,including blending,composite preparation,stereo-complexation,coating and chemical modification. Major principles and protocols of these methods to improve properties of PLA are discussed,with detailed analysis and comparison of relevant properties. Although blending is easy to operate,it is not conducive to the homogenization of PLA materials,sometimes with limited improvement in properties. Carbon based additives,metal additives,plant fibers,and other fillers provide 3D printed PLA multiple functions. However,interfacial incompatibility remains a problem in composite preparation. Furthermore,new methods,such as stereo-complexation,coating,and chemical modification are also valuable methods to be discovered. Considering the development requirements of 3D printed PLA in practical applications,existing problems in current PLA materials are systematically analyzed to serve as an access threshold for quality 3D printed PLA to be considered in real applications. © 2024 Cailiao Daobaoshe/ Materials Review. All rights reserved.
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