共 21 条
[21]
ZUCCHINI U, 1983, ADV POLYM SCI, V51, P101
THE SYNTHESIS OF LOW-MOLECULAR WEIGHT HYDROXY-TIPPED POLYETHYLENE AND POLYPROPYLENE BY THE INTERMEDIACY OF ZIEGLER-NATTA CATALYSTS
被引：26
作者：
BURFIELD, DR
机构：
[1] Univ of Malaya, Dep of Chemistry,, Kuala Lumpur, Malays, Univ of Malaya, Dep of Chemistry, Kuala Lumpur, Malays
来源：
关键词：
CATALYSTS - Diethylzinc Compounds - ETHYLENE - Polymerization - POLYPROPYLENE - Synthesis - RADIOACTIVE MATERIALS - Tracers;
D O I：
10.1016/0032-3861(84)90256-8
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 use of diethylzinc in conjunction with conventional and supported Ziegler-Natta catalysts permits the synthesis of polypropylene and polyethylene samples with g. p. c. M OVER BAR //n values as low as 4000 and 3000 respectively. At high diethylzinc concentrations the number of metal-polymer bonds appears to be 40% for polypropylene and 50% for polyethylene respectively, as measured by a tritium-quench radiotracer method. The metal-bound macromolecules can be efficiently oxidized with molecular oxygen at 60 degree C, and subsequently hydrolyzed to give hydroxy-tipped polymers. The oxidation efficiency appears to be variable and to be lower at high diethylzinc concentrations.
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页码：1817 / 1822
页数：6
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