Maleation of poly(4-methyl-1-pentene) using supercritical carbon dioxide

被引：57

作者：

Hayes, HJ ^{[1
]}

McCarthy, TJ ^{[1
]}

机构：

[1] Univ Massachusetts, Dept Polymer Sci & Engn, Amherst, MA 01003 USA

来源：

MACROMOLECULES | 1998年 / 31卷 / 15期

关键词：

D O I：

10.1021/ma980292c

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The heterogeneous free-radical grafting of maleic anhydride (MAK) onto poly(4-methyl-1-pentene) (PMP) was studied using supercritical carbon dioxide as the solvent/swellant. The anhydride content in the product can be controlled by using variations in time and temperature to achieve maleations as high as 7 mol % at 125 degrees C after a 5 h reaction period. A comparison between benzoyl peroxide (BPO) and dicumyl peroxide (DCP) initiators indicates that DCP is the more effective initiator. The effect of reactant concentrations on the degree of grafting is also examined, yielding an optimum MAH:DCP molar ratio of 3:2. Competitive cross-linking of the substrate is the major drawback to this means of polymer modification.

引用

页码：4813 / 4819

页数：7

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