Poly (lactic acid) foaming

被引：436
作者：
Nofar, Mohammadreza [1 ]
Park, Chul B. [1 ]
机构：
[1] Univ Toronto, Dept Mech & Ind Engn, Microcellular Plast Mfg Lab, Toronto, ON M5S 3G8, Canada
来源：
PROGRESS IN POLYMER SCIENCE | 2014年 / 39卷 / 10期
基金：
加拿大自然科学与工程研究理事会;
关键词：
Poly (lactic acid); Polylactide; PLA; Blowing agent; Foaming; Review; SUPERCRITICAL CARBON-DIOXIDE; POLYLACTIDE/LAYERED SILICATE NANOCOMPOSITES; MICROCELLULAR THERMOPLASTIC FOAM; POLY(LACTIC ACID); POLY(L-LACTIC ACID); MELT RHEOLOGY; CRYSTALLIZATION KINETICS; CELL MORPHOLOGY; POLYLACTIC ACID; POLY(D; L-LACTIC-CO-GLYCOLIC ACID);
D O I：
10.1016/j.progpolymsci.2014.04.001
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Poly (lactic acid) or polylactide (PLA) is an aliphatic thermoplastic polyester produced from renewable resources and is compostable in the environment. Because of the massive use of foamed products of petroleum-based polymers, PLA foams have been considered as substitutes for some of these products. Specifically, because of PLA's competitive material and processing costs, and its comparable mechanical properties, PLA foams could potentially replace polystyrene (PS) foam products in a wide array of applications such as packaging, cushioning, construction, thermal and sound insulation, and plastic utensils. Due to their biocompatibility, PLA foams can also be used in such biomedical applications as scaffolding and tissue engineering. But PLA has several inherent drawbacks, which inhibit the production of low-density foams with uniform cell morphology. These drawbacks are mainly the PLA's low melt strength and its slow crystallization kinetics. During the last two decades, researchers have investigated the fundamentals of PLA/gas mixtures, PLA foaming mechanisms, and the effects of material modification on PLA's foaming behavior through various manufacturing technologies. This article reviews these investigations and compares the developments made thus far in PLA foaming. (C) 2014 Elsevier Ltd. All rights reserved.
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页码：1721 / 1741
页数：21
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