Melt processing of cellulose nanocrystal reinforced polycarbonate from a masterbatch process
Melt processing of cellulose nanocrystal reinforced polycarbonate from a masterbatch process
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DOI：
10.1016/j.eurpolymj.2015.06.007
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发表时间：
2015-08-01
影响因子：
6
通讯作者：
Dufresne, Alain
中科院分区：
文献类型：
--
作者：
Mariano, Marcos;El Kissi, Nadia;Dufresne, Alain
采用熔融挤出法制备了纤维素纤维（CNC）增强聚碳酸酯（PC）纳米复合材料。首先使用溶解/沉淀方法制备高度浓缩的CNC/PC母料，然后通过挤出稀释。将来自CNC水性分散体的水交换为吡啶。将PC溶解在该悬浮液中，并将混合物在水中沉淀。PC矩阵采用了两种不同的方法。在第一种方法中，PC经历与母料相同的溶解/沉淀过程，而在第二种方法中，PC粒料直接与固体母料胶囊混合。随后的纳米复合材料的结构，热性能和力学性能进行了研究。(C)2015爱思唯尔有限公司版权所有。
Cellulose nanocrystal (CNC) reinforced polycarbonate (PC) nanocomposites were obtained by melt extrusion. Highly concentrated CNC/PC masterbatch was first prepared using a dissolution/precipitation process which was then diluted by extrusion. Water from the CNC aqueous dispersion was exchanged to pyridine. PC was dissolved in this suspension and the mixture was precipitated in water. Two different methodologies were adopted for the PC matrix. In the first one, PC was submitted to the same dissolution/precipitation process than masterbatch, whereas in the second approach, the PC pellets were directly mixed with the solid masterbatch capsules. The structural, thermal and mechanical properties of ensuing nanocomposite materials were investigated. (C) 2015 Elsevier Ltd. All rights reserved.