Free radical modification of LDPE with vinyltriethoxysilane

被引：30

作者：

Fabris, FW ^{[1
]}

Stedile, FC ^{[1
]}

Mauler, RS ^{[1
]}

Nachtigall, SMB ^{[1
]}

机构：

[1] Univ Fed Rio Grande do Sul, Inst Chem, BR-91501970 Porto Alegre, RS, Brazil

来源：

EUROPEAN POLYMER JOURNAL | 2004年 / 40卷 / 06期

关键词：

polyethylene; vinylsilane; degree of functionalization; crosslinking; mechanical properties;

D O I：

10.1016/j.eurpolymj.2004.01.008

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Chemical modification of low density polyethylene (LDPE) with vinyltriethoxysilane (VTES) was studied. The melt reactions were performed in a mixer and were initiated by thermal decomposition of a peroxide. The degree of functionalization was determined by Fourier transform infrared spectroscopy and Rutherford backscattering spectrometry. It was verified that the degree of functionalization increased with VTES and peroxide concentrations showing high conversion, up to 86 wt.%. No functionalization was observed in the absence of peroxide. Functionalized products showed some gel content and lower crystallinity than the parent homopolymer, affecting the stress/strain behavior. Yielding stress, elongation at break and elastic modulus decreased for the modified PE. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：1119 / 1126

页数：8

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