UV sensitisation of polyethylenes for grafting of maleic anhydride

被引：24

作者：

Martínez, JG ^{[1
]}

Benavides, R

Guerrero, C

Reyes, BE

机构：

[1] CIQA, Ctr Invest Quim Aplicada, Saltillo 25100, Coahuila, Mexico

[2] Univ Autonoma NL, Fac Ingn Mecan & Elect, FIME UANL, San Nicolas De Los Garza 66450, NL, Mexico

来源：

POLYMER DEGRADATION AND STABILITY | 2004年 / 86卷 / 01期

关键词：

UV radiation; PE; grafting; maleic anhydride;

D O I：

10.1016/j.polymdegradstab.2004.02.016

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Three polyethylenes (HDPE, LDPE and LLDPE) have been irradiated with UV light, as a pre-step for hydroperoxide production, before a bulk grafting reaction with maleic anhydride (MAH). The method was compared with a traditional grafting procedure using peroxides. The grafting reaction was followed by FTIR and gel percentage and the grafting degree evaluated by means of titration; LDPE showed the highest grafting values. The effect of grafting on the thermal properties of polyethylenes was observed by DSC, using heating and cooling thermograms; HDPE presented the most significant changes in fusion peaks, indicating differences in the crystallisation process after the grafting reaction. The latter was confirmed by SEM and NMR spectroscopy, showing the succinic anhydride rings attached to the polyethylene chains. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：129 / 134

页数：6

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