In situ FTIR spectroscopic study of the regularity bands and partial-order melts of isotactic poly(propylene)

被引：1
|
作者：
Zhu, XY
Yan, DY
Yao, HX
Zhu, PF
机构：
[1] Shanghai Jiao Tong Univ, Coll Chem & Chem Technol, Shanghai 200240, Peoples R China
[2] Shanghai Jiao Tong Univ, Ctr Phys & Chem, Shanghai 200030, Peoples R China
来源：
MACROMOLECULAR RAPID COMMUNICATIONS | 2000年 / 21卷 / 07期
关键词：
D O I：
10.1002/(SICI)1521-3927(20000401)21:7<354::AID-MARC354>3.0.CO;2-B
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
An experimental method to determine the order degree of isotactic poly(propylene) (iPP) via regularity bands was developed using fast heating Fourier transform infrared spectroscopy. The various regularity bands can be rearranged in terms of the order degree from high to low: 940, 1220, 1167. 1303, 1330, 841, 998, 900, 808, 1100 and 973 cm(-1). When the crystalline iPP melts, partially ordered melt is formed. With a decreasing degree of order of the partially ordered melt, the crystallization peak shifts to lower temperatures and the exothermal enthalpy becomes larger.
引用
收藏
页码：354 / 357
页数：4
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