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

Authors
Zhu, XY Yan, DY Yao, HX Zhu, PF
Citation
Xy. Zhu et al., In situ FTIR spectroscopic study of the regularity bands and partial-ordermelts of isotactic poly(propylene), MACRO RAPID, 21(7), 2000, pp. 354-357
Citations number
23
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
MACROMOLECULAR RAPID COMMUNICATIONS
ISSN journal
10221336 → ACNP
Volume
21
Issue
7
Year of publication
2000
Pages
354 - 357
Database
ISI
SICI code
1022-1336(20000512)21:7<354:ISFSSO>2.0.ZU;2-7
Abstract
An experimental method to determine the order degree of isotactic poly(prop ylene) (iPP) via regularity bands was developed using fast heating Fourier transform infrared spectroscopy. The various regularity bands can be rearra nged 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 mel ts, partially ordered melt is formed. With a decreasing degree of order of the partially ordered melt, the crystallization peak shifts to lower temper atures and the exothermal enthalpy becomes larger.