Polypropylene functionalization with vinyltriethoxysilane

被引：1
|
作者：
Nachtigall, SMB [1 ]
Stedile, FC [1 ]
Felix, AHO [1 ]
Mauler, RS [1 ]
机构：
[1] UFRGS, Inst Quim, BR-91509900 Porto Alegre, RS, Brazil
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 1999年 / 72卷 / 10期
关键词：
polypropylene functionalization; vinylsilane; melt mixing; Rutherford Backscattering Spectrometry; molecular weight;
D O I：
10.1002/(SICI)1097-4628(19990606)72:10<1313::AID-APP11>3.0.CO;2-D
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Polypropylene (PP) functionalization with vinyltriethoxysilane (VTES) was accomplished via a free radical process in a melt-mixer chamber, using dicumyl peroxide as the initiator. Fourier-Transform Infrared Spectroscopy (FTIR), Rutherford Back scattering Spectrometry (RBS), and gel permeation chromatography (GPC) were used to follow silane incorporation and product molecular weights. The influence of silane (0-10.0 wt %) and peroxide (0-1.0 wt %) concentrations on the functionalization degree and molecular weight of products was investigated. Chain-breaking reactions were present in all experiments, evidenced by smaller product molecular weights. This decrease was more pronounced for higher peroxide concentrations. Silane incorporation occurred even in peroxide absence, and it was seen to increase with increasing silane concentration. (C) 1999 John Wiley & Sons, Inc.
引用
收藏
页码：1313 / 1319
页数：7
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