Preparation and characterization of melt processed poly(L-lactide)/layered double hydroxide nonocomposites

被引：22

作者：

Chiang, Ming-Feng ^{[1
]}

Wu, Tzong-Ming ^{[1
]}

机构：

[1] Natl Chung Hsing Univ, Dept Mat Sci & Engn, Taichung 402, Taiwan

来源：

COMPOSITES PART B-ENGINEERING | 2012年 / 43卷 / 07期

关键词：

Polymer-matrix composites (PMCs); Microstructures; Mechanical properties; Electron microscopy; Layered double hydroxide; LAYERED DOUBLE HYDROXIDES; MONTMORILLONITE NANOCOMPOSITES; BIODEGRADABLE POLY(L-LACTIDE); SILICATE NANOCOMPOSITES; MECHANICAL-PROPERTIES; LACTIC-ACID; BEHAVIOR; CRYSTALLIZATION; COMPOSITES; CLAY;

D O I：

10.1016/j.compositesb.2012.04.040

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work reports the fabrication and physical properties of biodegradable poly(L-lactide)(PLLA) composites containing a fraction of unmodified layered double hydroxides (LDH-NO3) and gamma-polyglutamate-modified layered double hydroxides (gamma-LDH) by melt blending process. The X-ray diffraction (XRD) and transmission electron microscopy (TEM) experimental results showed that the original LDH-NO3 with the certain amount of aggregates was unevenly dispersed throughout the PLLA matrix. Conversely, gamma-LDH allows the formation of an intercalated nanocomposite. Although the water vapor permeability of the PLLA/LDH systems was decreased with increasing the loading of LDH, the barrier property of PLLA reinforced with gamma-LDH is superior to that of PLLA-L composites. The effects of both LDHs on mechanical and thermal properties of PLLA were also investigated. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：2789 / 2794

页数：6

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