STUDIES ON ISOTHERMAL CRYSTALLIZATION KIN ETICS OF IPS-B-IPP BLOCK-COPOLYMER

Authors
XU GX LIN SA
Citation
Gx. Xu et Sa. Lin, STUDIES ON ISOTHERMAL CRYSTALLIZATION KIN ETICS OF IPS-B-IPP BLOCK-COPOLYMER, Gaodeng xuexiao huaxue xuebao, 16(1), 1995, pp. 139-142
Citations number
9
Categorie Soggetti
Chemistry
Journal title
Gaodeng xuexiao huaxue xuebao → ACNP
ISSN journal
02510790
Volume
16
Issue
1
Year of publication
1995
Pages
139 - 142
Database
ISI
SICI code
0251-0790(1995)16:1<139:SOICKE>2.0.ZU;2-G
Abstract
The isothermal crystallization kinetics of styrene/propylene block cop olymer(iPS-b-iPP) has been investigated by DSC. The results indicated that the kinetics of isothermal crystallization for all of samples was fitted for the Avrami equation quite well within selected crystalliza tion temperature (127-132 degrees C), and that the crystallization tem perature, crystallization rate and crystal growing mechanism were affe cted by the composition ratio of iPS-b-iPP. With the increase of the c ontent of iPS block in iPS-b-iPP copolymers crystallization rate(G) an d Avrami exponent(n) were significantly reduced, In addition, a discus sion about the relationship between the growing mechanism of crystals and the composition ratio of iPS-b-iPP was made based on the Avrami ex ponents and TEM.