The beta-crystalline form of isotactic polypropylene in blends of isotactic polypropylene and polyamide-6/clay nanocomposites

doi:10.1002/polb.20214

CORC > 化学研究所 > 中国科学院化学研究所

	The beta-crystalline form of isotactic polypropylene in blends of isotactic polypropylene and polyamide-6/clay nanocomposites
	Feng, M ; Gong, FL ; Zhao, CG ; Chen, GM ; Zhang, SM ; Yang, MS ; Han, CC
刊名	JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
	2004-09-15
卷号	42 期号:18 页码:3428-3438
关键词	Blends Clay Crystalline Form Isotactic Polypropylene Nanocomposites Polyamide-6
ISSN号	0887-6266
DOI	10.1002/polb.20214
英文摘要	Blends of isotactic polypropylene and polyamide-6/clay nanocomposites (iPP/NPA6) were prepared with an internal batch mixer. A high content of the beta-crystalline form of isotactic polypropylene (beta-iPP) was observed in the injection-molded samples of the iPP/NPA6 blends, whereas the content of beta-iPP in the iPP/PA6 blends and the iPP/clay composite was low and similar to that of neat iPP. Quiescent melt crystallization was studied by means of wide-angle X-ray diffraction, differential scanning calorimetry, and polarized optical microscopy. We found that the significant beta-iPP is not formed during quiescent melt crystallization regardless of whether the sample used was the iPP/NPA6 blend or an NPA6 fiber/iPP composite. Further characterization of the injection-molded iPP/NPA6 revealed a shear-induced skin-core distribution of beta-iPP and the formation of beta-iPP in the iPP/NPA6 blends is related to the shear flow field during cavity-filling. In the presence of clay, the deformation ability of the NPA6 domain is decreased, as evidenced by rheological and morphological studies. It is reasonable that the enhanced relative shear, caused by low deformability of the NPA6 domain in the iPP matrix, is responsible for beta-iPP formation in the iPP/NPA6 blends. (C) 2004 Wiley Periodicals, Inc.
语种	英语
出版者	JOHN WILEY & SONS INC
WOS记录号	WOS:000223691800012
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/55807]
专题	中国科学院化学研究所
通讯作者	Yang, MS
作者单位	1.Chinese Acad Sci, Inst Chem, Joint Lab Polymer Sci & Mat, Key Lab Engn Plast,Chinese Acad Sci, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Joint Lab Polymer Sci & Mat, State Key Lab Polymer Phys & Chem, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Feng, M,Gong, FL,Zhao, CG,et al. The beta-crystalline form of isotactic polypropylene in blends of isotactic polypropylene and polyamide-6/clay nanocomposites[J]. JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,2004,42(18):3428-3438.
APA	Feng, M.,Gong, FL.,Zhao, CG.,Chen, GM.,Zhang, SM.,...&Han, CC.(2004).The beta-crystalline form of isotactic polypropylene in blends of isotactic polypropylene and polyamide-6/clay nanocomposites.JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,42(18),3428-3438.
MLA	Feng, M,et al."The beta-crystalline form of isotactic polypropylene in blends of isotactic polypropylene and polyamide-6/clay nanocomposites".JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS 42.18(2004):3428-3438.