Effects of isothermal crystallization on fracture toughness and crack growth behavior of poly (lactic acid)

被引：37

作者：

Park, SD ^{[1
]}

Todo, M ^{[1
]}

Arakawa, K ^{[1
]}

机构：

[1] Kyushu Univ, Appl Mech Res Inst, Fukuoka 8168580, Japan

来源：

JOURNAL OF MATERIALS SCIENCE | 2005年 / 40卷 / 04期

关键词：

D O I：

10.1007/s10853-005-6534-z

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A study to characterize the effect of isothermal crystallization on the mode I fracture toughness of polylactic acid (PLA) solids was discussed. An amorphous and six crystallined PLA plates were prepared by quenching and annealing and their crystalline structures were characterized by polarizing optical microscopy (POM). The thermal properties of these six PLA plates were measured by a differential scanning calorimetry (DSC). Mode I fracture toughness was estimated at a quasi-static loading rate and then correlated with the crack growth behavior characterized by POM. A unique dependence of crystallinity on KIC was found and the change of KIC was closely related to the changes of microstructure and crack growth behavior.

引用

页码：1055 / 1058

页数：4

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