Large-scale production, properties and commercial applications of polylactic acid polymers
Large-scale production, properties and commercial applications of polylactic acid polymers
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DOI：
10.1016/s0141-3910(97)00148-1
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发表时间：
1998-01-01
影响因子：
5.9
通讯作者：
Lunt, J
中科院分区：
文献类型：
--
作者：
Lunt, J
聚乳酸 (PLA) 并不是新聚合物。然而，最近利用可再生原料经济地制造单体的能力的发展使这些材料处于新兴可生物降解塑料行业的前沿。人们越来越多地认识到这些聚合物的固有特性，再加上了解如何操纵这些特性以实现与热塑性塑料加工、制造和最终用途要求的兼容性，这些都激发了人们对 PLA 产品的技术和商业兴趣。本文讨论了用于生产聚乳酸的各种技术。此外，人们还关注如何控制单体立体化学以赋予最终聚合物目标用途。描述了具体的应用，以进一步说明通过利用基本单体/聚合物化学与后改性技术相结合可以开发的性能范围。最后，将讨论聚乳酸的生物降解机制并与其他可生物降解聚合物进行对比。 (C) 1998 爱思唯尔科学有限公司。版权所有。
Polylactic acids (PLA) are not new polymers. However, recent developments in the capability to manufacture the monomer economically from renewable feedstocks have placed these materials at the forefront of the emerging biodegradable plastics industry. Increasing realisation of the intrinsic properties of these polymers, coupled with a knowledge of how such properties can be manipulated to achieve compatibility with thermoplastics processing, manufacturing, and end-use requirements has fuelled technological and commercial interest in PLA products. This paper discusses the various technologies being used to produce polylactic acids. In addition, attention is drawn to how monomer stereochemistry can be controlled to impart targeted utility in the final polymers. Specific applications are described to illustrate further the range of properties that can be developed by utilising both the basic monomer/polymer chemistries in combination with post-modification techniques. Finally, the biodegradation mechanism of polylactic acids will be discussed and contrasted with other biodegradable polymers. (C) 1998 Elsevier Science Limited. All rights reserved.