Carbohydrate derived copoly(lactide) as the compatibilizer for bacterial cellulose reinforced polylactide nanocomposites
Carbohydrate derived copoly(lactide) as the compatibilizer for bacterial cellulose reinforced polylactide nanocomposites
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DOI：
10.1016/j.compscitech.2012.07.003
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发表时间：
2012-09-17
影响因子：
9.1
通讯作者：
Bismarck, Alexander
中科院分区：
文献类型：
--
作者：
Lee, Koon-Yang;Tang, Min;Bismarck, Alexander
一种新的，完全生物衍生的聚乳酸碳水化合物共聚物（RP 1）被用作相容剂，生产细菌纤维素（BC）聚（L-丙交酯）（PLLA）纳米复合材料具有改善的机械性能。RP 1液滴在单个BC纳米纤维上的接触角测量证明，它对BC具有比PLLA更高的亲和力，RP 1具有可比的杨氏模量，但比PLLA更低的拉伸强度。当RP 1与PLLA以5wt%的浓度共混时，所得聚合物共混物的拉伸模量和强度分别从PLLA的4.08GPa和63.1降低到3.75GPa和56.1MPa。与纯PLLA或PLLA-BC纳米复合材料相比，BC和PLLA的复合材料（具有5重量%RP 1和5重量%BC）具有更高的杨氏模量和拉伸强度。(c)2012爱思唯尔有限公司保留所有权利。
A novel, entirely bio-derived polylactide carbohydrate copolymer (RP1) is used as a compatibilizer, to produce bacterial cellulose (BC) poly(L-lactide) (PLLA) nanocomposites with improved mechanical properties. Contact angle measurements of RP1 droplets on single BC nanofibres proved that it has a higher affinity towards BC than PLLA RP1 has a comparable Young's modulus, but lower tensile strength, than PLLA. When RP1 was blended with PLLA at a concentration of 5 wt%, the tensile modulus and strength of the resulting polymer blend decreased from 4.08 GPa and 63.1, respectively, for PLLA to 3.75 GPa and 56.1 MPa. A composite of BC and PLLA (with 5 wt% RP1 and 5 wt% BC) has a higher Young's modulus and tensile strength, compared to either pure PLLA or PLLA-BC nanocomposites. (c) 2012 Elsevier Ltd. All rights reserved.