Structure and properties of polylactide/natural rubber blends

被引：244

作者：

Bitinis, N. ^{[1
]}

Verdejo, R. ^{[1
]}

Cassagnau, P. ^{[2
,3
,4
]}

Lopez-Manchado, M. A. ^{[1
]}

机构：

[1] CSIC, Inst Ciencia & Tecnol Polimeros, E-28006 Madrid, Spain

[2] Univ Lyon, F-69003 Lyon, France

[3] Univ Lyon 1, F-69622 Villeurbanne, France

[4] CNRS UMR5223, F-69622 Villeurbanne, France

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2011年 / 129卷 / 03期

关键词：

Biopolymers; Immiscible blends; Microstructure; MICROMECHANICAL DEFORMATION PROCESSES; FILLED SEMICRYSTALLINE POLYMERS; POLY(LACTIC ACID); NATURAL-RUBBER; ADIPATE-CO-TEREPHTHALATE) BLENDS; CRYSTALLIZATION KINETICS; PROCESSING PARAMETERS; MECHANICAL-PROPERTIES; DISPERSED PHASE; MELT;

D O I：

10.1016/j.matchemphys.2011.05.016

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Polylactide, PLA, is a biodegradable thermoplastic polyester derived from biomass that has restricted packaging applications due to its high brittleness and poor crystallisation behaviour. Here, new formulations based on natural rubber-PLA blends have been developed. The processing windows, temperature, time, and rotor rate, and the rubber content have been optimised in order to obtain a blend with useful properties. The rubber phase was uniformly dispersed in the continuous PLA matrix with a droplet size range from 1.1 to 2.0 mu m. The ductility of PLA has been significantly improved by blending with natural rubber, NR. The elongation at break improved from 5% for neat PLA to 200% by adding 10 wt% NR. In addition, the incorporation of NR not only increased the crystallisation rate but also enhanced the crystallisation ability of PLA. These materials are, therefore, very promising for industrial applications. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：823 / 831

页数：9

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