Dynamic mechanical and thermal properties of a chemically modified polypropylene/natural rubber thermoplastic elastomer blend

被引：41

作者：

Benmesli, Sarnia ^{[1
]}

Riahi, Farid ^{[1
]}

机构：

[1] Univ Setif 1, Fac Technol, Dept Genie Proc, Lab Mat Polymer Multiphas, Setif 19000, Algeria

来源：

POLYMER TESTING | 2014年 / 36卷

关键词：

Thermoplastic elastomers; Grafting; Maleic anhydride; Natural rubber; Polypropylene;

D O I：

10.1016/j.polymertesting.2014.03.016

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Thermoplastic elastomers from blends of maleic anhydride-grafted natural rubber (NR-g-MAH) and maleic anhydride-grafted polypropylene (PP-g-MAH) have been prepared by melt mixing in a Brabender plasticorder. Grafting of each polymer was achieved in the molten state using dicumyl peroxide as the initiator. The effects on the dynamic mechanical and thermal properties were investigated over a wide range of temperatures. DMA analysis showed an increase of the glass transition temperature by 5 degrees C and a disappearance of the beta transition peak for NR-g-MAH/PP-g-MAH with respect to the unmodified NR/PP blend. The DSC analysis showed a slight increase of the fractional crystallinity of polypropylene for the dynamically vulcanized and grafted blends. These effects were attributed to the enhancement of the interactions that developed between the two polymers as a result of the grafting. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：54 / 61

页数：8

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