THE EFFECT OF RADIATION-INDUCED CROSS-LINKING ON THE RELAXATION OF TAUT TIE MOLECULES DURING ANNEALING OF DRAWN LDPE

	THE EFFECT OF RADIATION-INDUCED CROSS-LINKING ON THE RELAXATION OF TAUT TIE MOLECULES DURING ANNEALING OF DRAWN LDPE
	YAN RJ ; LUO YX ; JIANG BZ
刊名	journal of applied polymer science
	1993
卷号	47 期号:5 页码:789-796
关键词	POLYETHYLENE POLYPROPYLENE
ISSN号	0021-8995
通讯作者	yan rj
中文摘要	shrinkage, retractive stress, and infrared dichroism of the drawn low-density polyethylene (ldpe) as-drawn and irradiated by co-60-ray have been measured under different annealing conditions. the shrinkage and the disorientation of the irradiated sample was undergone more rapidly than that of unirradiated one as the temperature was continuously increased, surpassing a certain value, and a higher degree of shrinkage and disorientation was achieved finally for the irradiated sample when the samples were annealed with free ends. for the samples heated isothermally with fixed ends, the retractive stress went through a maximum and then attenuated to a limited value, and the degree of such a stress attenuation for the unirradiated sample was much more than that for the irradiated sample. these results show that the taut tie molecules (ttms) in drawn pe can relax by the pulling of chain segments out of crystal blocks that they anchored in at elevated temperatures higher than the a transition and also by the displacing of microfibrils if the samples were annealed with free ends. the cross-links produced by irradiation prohibit the former process. it was further observed that the dependence of the average extinction coefficient of the band at 2016 cm-1 on that of the band at 1894 cm-1 is related to irradiation and annealing conditions, which has also been explained by the relaxation of ttms and the function of irradiation-induced cross-linking on the relaxation.
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/322003/36309]
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	YAN RJ,LUO YX,JIANG BZ. THE EFFECT OF RADIATION-INDUCED CROSS-LINKING ON THE RELAXATION OF TAUT TIE MOLECULES DURING ANNEALING OF DRAWN LDPE[J]. journal of applied polymer science,1993,47(5):789-796.
APA	YAN RJ,LUO YX,&JIANG BZ.(1993).THE EFFECT OF RADIATION-INDUCED CROSS-LINKING ON THE RELAXATION OF TAUT TIE MOLECULES DURING ANNEALING OF DRAWN LDPE.journal of applied polymer science,47(5),789-796.
MLA	YAN RJ,et al."THE EFFECT OF RADIATION-INDUCED CROSS-LINKING ON THE RELAXATION OF TAUT TIE MOLECULES DURING ANNEALING OF DRAWN LDPE".journal of applied polymer science 47.5(1993):789-796.