ISOTHERMAL CRYSTALLIZATION OF ISOTACTIC POLYPROPYLENE IN DOTRIACONTANE .3. EFFECT OF DILUTION AND CRYSTALLIZATION TEMPERATURE ON GROWTH-RATE

被引:20
|
作者
WANG, YF [1 ]
LLOYD, DR [1 ]
机构
[1] UNIV TEXAS,CTR POLYMER RES,DEPT CHEM ENGN,AUSTIN,TX 78712
关键词
CRYSTALLIZATION; ISOTACTIC POLYPROPYLENE; KINETICS;
D O I
10.1016/0032-3861(93)90816-S
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 spherulitic growth rate of isotactic polypropylene in dotriacontane was studied using optical microscopy. Polymer concentration was varied from 100 to 10 wt% iPP in 10 wt% intervals. Crystallization temperature was varied from 372 to 429 K in 1 K intervals. The influence of these variables on polymer spherulitic growth rate and regime transitions was analysed using the Lauritzen-Hoffman and Toda nucleation theories.
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页码:2324 / 2329
页数:6
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