Effect of processing conditions on the mechanical and thermal properties of high-impact polypropylene nanocomposites

被引：23
作者：
Furlan, L. G. [1 ]
Ferreira, C. I. [2 ]
Dal Castel, C. [2 ]
Santos, K. S. [2 ]
Mello, A. C. E. [2 ]
Liberman, S. A. [3 ]
Oviedo, M. A. S. [3 ]
Mauler, R. S. [2 ]
机构：
[1] Fed Inst Rio Grande Sul, IFRS, BR-91790400 Porto Alegre, RS, Brazil
[2] Univ Fed Rio Grande do Sul, Inst Chem, BR-91501970 Porto Alegre, RS, Brazil
[3] Braskem SA, Polo Petroquim 3, BR-95853000 Triunfo, Brazil
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2011年 / 528卷 / 22-23期
关键词：
Nanocomposite; Polypropylene; Processing; morphology; mechanical properties; POLYMER/LAYERED SILICATE NANOCOMPOSITES; MORPHOLOGY; MONTMORILLONITE; DISPERSION; EXFOLIATION; BEHAVIOR; AGENTS;
D O I：
10.1016/j.msea.2011.05.044
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Polypropylene montmorillonite (PP-MMT) nanocomposites have been prepared by using a co-rotating twin screw extruder. The effects of processing conditions at fixed clay content (5 wt%) on polymer properties were investigated by means of transmission electron microscopy (TEM), flexural modulus, izod impact, dynamic mechanical analysis (DMA), and differential scanning calorimetry (DSC). It was noticed that the morphology and the mechanical properties of polypropylene nanocomposites were affected by different screw shear configuration. The results showed that the higher enhancement on mechanical properties was obtained by medium shear intensity profile instead of high configuration. An exceptional increase (maximum of 282%) on impact resistance was observed. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：6715 / 6718
页数：4
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