ICCAS OpenIR
Effects of La3+-containing additive on crystalline characteristics of isotactic polypropylene
Feng, JC; Chen, MC
2003
Source PublicationPOLYMER INTERNATIONAL
ISSN0959-8103
Volume52Issue:1Pages:42-45
AbstractThe 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.
KeywordAdditive Crystalline Characteristics Isotactic Polypropylene
DOI10.1002/pi.984
Indexed BySCI
Language英语
WOS IDWOS:000180839200006
PublisherJOHN WILEY & SONS LTD
Citation statistics
Cited Times:42[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/80446
Collection中国科学院化学研究所
Corresponding AuthorFeng, JC
Affiliation1.Acad Sinica, Guangzhou Inst Chem, Guangzhou 510650, Peoples R China
2.Acad Sinica, Inst Chem, Beijing 100080, Peoples R China
Recommended Citation
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.
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