Crystallinity study of nano-biocomposites based on plasticized poly(hydroxybutyrate-co-hydroxyvalerate) with organo-modified montmorillonite

被引：23
|
作者：
Branciforti, Marcia Cristina [1 ]
Silveira Correa, Maria Clara [2 ,3 ]
Pollet, Eric [2 ]
Marcondes Agnelli, Jose Augusto [3 ]
de Paula Nascente, Pedro Augusto [3 ]
Averous, Luc [2 ]
机构：
[1] Univ Sao Paulo, Escola Engn Sao Carlos, Dept Engn Mat, BR-13566590 Sao Carlos, SP, Brazil
[2] Univ Strasbourg, BioTeam ICPEES ECPM, F-67087 Strasbourg 2, France
[3] Univ Fed Sao Carlos, Dept Engn Mat, BR-13565905 Sao Carlos, SP, Brazil
来源：
POLYMER TESTING | 2013年 / 32卷 / 07期
关键词：
Polyhydroxyalkanoates (PHA); Organoclay; Nanocomposites; Crystallization; Mechanical properties; Aging; PHYSICAL-PROPERTIES; CRYSTALLIZATION; BIODEGRADATION; DEGRADATION; BEHAVIOR;
D O I：
10.1016/j.polymertesting.2013.08.001
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The influence of nanofiller, plasticizer and hydroxyvalerate (HV) contents on the properties of poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV)/clay nano-biocomposites is studied. Analyses by wide-angle X-ray diffraction and differential scanning calorimetry showed that both the organo-modified montmorillonite clay and acetyl tributyl citrate plasticizer facilitate the crystallization process of PHBV. Despite its nucleating effect, the nanoclay hampers the spherulite growth and leads to a reduction in the copolymer crystallinity, while the addition of plasticizer induces the formation of thicker spherulites. For all studied systems, it was shown that the variation of mechanical properties of these nano-biocomposites is strongly influenced by their changes in crystallinity. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1253 / 1260
页数：8
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