PLA/PHBV Films with Improved Mechanical and Gas Barrier Properties

被引：85

作者：

Boufarguine, Majdi ^{[1
,2
]}

Guinault, Alain ^{[1
,2
]}

Miquelard-Garnier, Guillaume ^{[1
,2
]}

Sollogoub, Cyrille ^{[1
,2
]}

机构：

[1] CNAM, P 2AM, F-75003 Paris, France

[2] Arts & Metiers ParisTech, PIMM, F-75013 Paris, France

来源：

MACROMOLECULAR MATERIALS AND ENGINEERING | 2013年 / 298卷 / 10期

关键词：

barriers; biopolymers; extrusion; mechanical properties; microstructures; POLY(LACTIC ACID); THERMAL-PROPERTIES; POLYMER BLENDS; PHBV BLENDS; MORPHOLOGY; CRYSTALLIZATION; NANOCOMPOSITES; POLYLACTIDE; PLA; BIODEGRADATION;

D O I：

10.1002/mame.201200285

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Blending poly(lactic acid) (PLA) with a small amount of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV; 10wt%) using a custom multilayer co-extrusion process increases both ductility and gas barrier properties of extruded films compared with neat PLA and classical blending methods. The co-extrusion process allows multiplication of the number of alternate layers of PLA and PHBV within a film. It was observed that for a critical number of theoretical layers, PHBV layers are broken into lamellas. A well-developed lamellar morphology, with thin and long lamellas of highly crystalline PHBV in PLA matrix was obtained. A balance between aspect ratio and crystallinity of the lamellas, and their dispersion within the PLA matrix was needed to obtain films with improved permeability and mechanical properties.

引用

页码：1065 / 1073

页数：9

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