Effects of La3+-containing additive on crystalline characteristics of isotactic polypropylene

doi:10.1002/pi.984

CORC > 化学研究所 > 中国科学院化学研究所

	Effects of La3+-containing additive on crystalline characteristics of isotactic polypropylene
	Feng, JC ; Chen, MC
刊名	POLYMER INTERNATIONAL
	2003
卷号	52 期号:1 页码:42-45
关键词	Additive Crystalline Characteristics Isotactic Polypropylene
ISSN号	0959-8103
DOI	10.1002/pi.984
英文摘要	The influence of a mixed additive of lanthanum stearate and stearic acid on the crystalline characteristics of isotactic polypropylene (iPP) has been investigated. The results of the wide-angle X-ray diffraction (WAXD) measurements and the melting behaviour examination by differential scanning calorimetry (DSC) show that the additive might induce a high proportion of beta-form and act as a beta-form nucleating agent. The relative content of beta-form estimated by WAXD is 33.1% in a PP containing 2.5% (by weight) of the additive. Isothermal crystallization at 130degreesC, examined by DSC, reveals that the additive considerably accelerates the overall rate of crystallization: the half crystallization period t(1/2), decreases from 11.7min for pure PP to 7.3min for PP containing 2.5% of the additive. However, the additive has no obvious influence on the nucleation mechanism and crystal growth mode. Polarized light microscopy (POM) examinations indicate that the addition of the additive to PP causes spherulites to become much finer. (C) 2003 Society of Chemical Industry.
语种	英语
出版者	JOHN WILEY & SONS LTD
WOS记录号	WOS:000180839200006
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/80445]
专题	中国科学院化学研究所
通讯作者	Feng, JC
作者单位	1.Acad Sinica, Guangzhou Inst Chem, Guangzhou 510650, Peoples R China 2.Acad Sinica, Inst Chem, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Feng, JC,Chen, MC. Effects of La3+-containing additive on crystalline characteristics of isotactic polypropylene[J]. POLYMER INTERNATIONAL,2003,52(1):42-45.
APA	Feng, JC,&Chen, MC.(2003).Effects of La3+-containing additive on crystalline characteristics of isotactic polypropylene.POLYMER INTERNATIONAL,52(1),42-45.
MLA	Feng, JC,et al."Effects of La3+-containing additive on crystalline characteristics of isotactic polypropylene".POLYMER INTERNATIONAL 52.1(2003):42-45.