Modification of polypropylene by melt vibration blending with ultra high molecular weight polyethylene

doi:10.1002/adv.10020

CORC > 化学研究所 > 中国科学院化学研究所

	Modification of polypropylene by melt vibration blending with ultra high molecular weight polyethylene
	Wang, KJ ; Zhou, CX ; Zhang, HB ; Zhao, DL
刊名	ADVANCES IN POLYMER TECHNOLOGY
	2002-09-01
卷号	21 期号:3 页码:164-176
关键词	Melt Polyethylene (Pe) Poly(Propelene) Pp Viscosity
ISSN号	0730-6679
DOI	10.1002/adv.10020
英文摘要	A novel vibration internal mixer was used to prepare polypropylene/ultra high molecular weight polyethylene PP/UHMWPE blends with two additional adjustable processing parameters (vibration frequency and vibration amplitude) as compared with those prepared in the steady mode. Microscopy, mechanical tests, and differential scanning calorimetry showed that vibration influenced the blend morphology and the product properties. The good phase homogeneity of the blends might be due to the variation of shear rate either spatially or temporally in blending. Additionally, the vibration internal mixer could be used to analyze the dependency of viscosity on the shear rate. Vibration enhanced the interpenetration of UHMWPE into PP and vice versa. Subsequently, the formed crystals of two components were connected, and there was epitaxy between PP and UHMWPE crystals. Moreover, the crystalline aggregates, with the amorphous UHMWPE, formed a complex network-like continuous structure, which improved the elongation ratio at the break and the yield strength. The higher the vibration frequency and/or the larger the vibration amplitude at a fixed average rotation speed of the mixer, the more significant these effects were. The larger amount of the connected crystals, especially of P form of PP in the bulk a form PP as well as with the continuous phase structure, led to a higher tensile properties of PP/UHMWPE vibration blended. (C) 2002 Wiley Periodicals, Inc.
语种	英语
出版者	JOHN WILEY & SONS INC
WOS记录号	WOS:000176923600002
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/79367]
专题	中国科学院化学研究所
通讯作者	Zhou, CX
作者单位	1.Shanghai Jiao Tong Univ, Dept Polymer Sci & Engn, Shanghai 200240, Peoples R China 2.Natl Key Lab Adv Composites, Beijing 100095, Peoples R China 3.Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Wang, KJ,Zhou, CX,Zhang, HB,et al. Modification of polypropylene by melt vibration blending with ultra high molecular weight polyethylene[J]. ADVANCES IN POLYMER TECHNOLOGY,2002,21(3):164-176.
APA	Wang, KJ,Zhou, CX,Zhang, HB,&Zhao, DL.(2002).Modification of polypropylene by melt vibration blending with ultra high molecular weight polyethylene.ADVANCES IN POLYMER TECHNOLOGY,21(3),164-176.
MLA	Wang, KJ,et al."Modification of polypropylene by melt vibration blending with ultra high molecular weight polyethylene".ADVANCES IN POLYMER TECHNOLOGY 21.3(2002):164-176.