CRYSTALLIZATION OF RARE-EARTH OXIDE-FILLED POLYPROPYLENE

	CRYSTALLIZATION OF RARE-EARTH OXIDE-FILLED POLYPROPYLENE
	LIU JJ ; TANG GB ; QU GJ ; ZHOU HR ; GUO QP
刊名	journal of applied polymer science
	1993
卷号	47 期号:12 页码:2111-2116
关键词	REGIME-III CRYSTALLIZATION ISOTACTIC POLYPROPYLENE MECHANICAL-PROPERTIES MORPHOLOGY FORM MELT
ISSN号	0021-8995
中文摘要	a study has been made of the crystallization behavior of polypropylene (pp) filled with rare earth oxides under isothermal conditions. these rare earth oxides include lanthanum oxide (la2o3), yttrium oxide (y2o3), and a mixture of rare earth oxides containing 70% y2o3 (y2o3-0.70). a differential scanning calorimeter was used to monitor the energetics of the crystallization process from the melt. during isothermal crystallization, dependence of the relative degree of crystallinity on time was described by the avrami equation. it has been shown that the addition of any of the three rare earth oxides causes a considerable increase in the overall crystallization rate of pp but does not influence the mechanism of nucleation and growth of the pp crystals. the analysis of kinetic data according to nucleation theories shows that the increase in crystallization rate of pp in the composites is due to the decrease in surface energy of the extremity surfaces. the relative contents of the beta-form in the composites are somewhat higher than that in the plain pp. however, the contents of the beta-form in the plain pp and the composites are all very low relative to those of the alpha-form and the influence of the formation of the beta-form on the crystallization kinetics can be neglected.
收录类别	SCI收录期刊论文
语种	英语
公开日期	2011-01-19 ; 2011-06-10
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/36265]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	LIU JJ,TANG GB,QU GJ,et al. CRYSTALLIZATION OF RARE-EARTH OXIDE-FILLED POLYPROPYLENE[J]. journal of applied polymer science,1993,47(12):2111-2116.
APA	LIU JJ,TANG GB,QU GJ,ZHOU HR,&GUO QP.(1993).CRYSTALLIZATION OF RARE-EARTH OXIDE-FILLED POLYPROPYLENE.journal of applied polymer science,47(12),2111-2116.
MLA	LIU JJ,et al."CRYSTALLIZATION OF RARE-EARTH OXIDE-FILLED POLYPROPYLENE".journal of applied polymer science 47.12(1993):2111-2116.