Characterization of the microstructure of biaxially oriented polypropylene using preparative temperature-rising elution fractionation

	Characterization of the microstructure of biaxially oriented polypropylene using preparative temperature-rising elution fractionation
	Liu YG ; Bo SQ
刊名	international journal of polymer analysis and characterization
	2003
卷号	8 期号:4 页码:225-243
关键词	ZIEGLER-NATTA CATALYSTS POLYETHYLENE COPOLYMERS POLYOLEFINS CALIBRATION TACTICITY DONORS
ISSN号	1023-666x
通讯作者	bo sq
中文摘要	two commercial biaxially oriented polypropylene (bopp) resins, resin a and resin b, having different processing properties, were fractionated by preparative temperature-rising elution fractionation (tref). the tref fractions were further characterized by gel permeation chromatography (gpc), gel permeation chromatography coupled with light scattering (gpc-ls), wide-angle x-ray diffraction (waxd), and differential scanning calorimetry (dsc). gpc-ls did not find visible long-chain branching in either resin a or b. the results from tref and dsc indicate that the fractional melting parameter f(t) may be used to predict the profile of the tref cumulative weight distribution curve. gpc results show that the molecular weights of the fractions tend to increase with elution temperature. waxd and dsc data show that the crystallinity of fractions does not increase monotonically with increase of elution temperature. there appears to be a maximum in the plot of crystallinity versus elution temperature. the high-speed bopp resin a has a lower isotacticity but a homogeneous isotacticity distribution and a higher molecular weight but a broader molecular weight distribution than resin b.
收录类别	SCI
语种	英语
WOS记录号	WOS:000183944500001
公开日期	2010-09-13
内容类型	期刊论文
源URL	[http://202.98.16.49/handle/322003/17763]
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 YG,Bo SQ. Characterization of the microstructure of biaxially oriented polypropylene using preparative temperature-rising elution fractionation[J]. international journal of polymer analysis and characterization,2003,8(4):225-243.
APA	Liu YG,&Bo SQ.(2003).Characterization of the microstructure of biaxially oriented polypropylene using preparative temperature-rising elution fractionation.international journal of polymer analysis and characterization,8(4),225-243.
MLA	Liu YG,et al."Characterization of the microstructure of biaxially oriented polypropylene using preparative temperature-rising elution fractionation".international journal of polymer analysis and characterization 8.4(2003):225-243.