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	Effects of coupling agents on the natural aging behavior and oxidation profile of high-density polyethylene/sericite composites
	Yang, Rui ; Yu, Jian ; Liu, Ying ; Wang, Kunhua
	2010-05-07 ; 2010-05-07
关键词	aging composites degradation polyethylene (PE) PHOTOOXIDATIVE DEGRADATION PHOTODEGRADED POLYPROPYLENE CHEMI-CRYSTALLIZATION INFRARED-SPECTROSCOPY MECHANICAL-PROPERTIES MELTING BEHAVIOR DEPTH-PROFILES CROSS-LINKING NANOCOMPOSITES HDPE Polymer Science
中文摘要	The natural photooxidation of high-density polyethylene (HDPE)/sericite composites was carried out outdoors for 180 days. The oxidative products, oxidation profile, and section morphology were characterized with Fourier transform infrared spectroscopy, infrared microscopy, and scanning electron microscopy, respectively. The results showed that HDPE/sericite had a higher oxidation degree than HDPE. All the coupling agents (CAs) accelerated the oxidation reaction of HDPE and made the final carbonyl index higher than that of an untreated one. The effect of sericite might have been due to the increased ultraviolet absorbance, whereas the effects of CAs might have been due to the active functional groups. Furthermore, cracks in the sections of test bars of HDPE/sericite composites after natural exposure were also observed. Their average lengths and densities were different for various CA treatments. This difference had a direct correspondence with the oxidation profile along the depth. This demonstrated that significant oxidation and consequently chain scission in the surface layer were responsible for the formation of cracks. Comparing the natural aging behavior of the films with test bars, we obtained more information about the propagation of the photooxidation. (C) 2007 Wiley Periodicals, Inc.
语种	英语 ; 英语
出版者	JOHN WILEY & SONS INC ; HOBOKEN ; 111 RIVER ST, HOBOKEN, NJ 07030 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/17878]
专题	清华大学
推荐引用方式 GB/T 7714	Yang, Rui,Yu, Jian,Liu, Ying,et al. Effects of coupling agents on the natural aging behavior and oxidation profile of high-density polyethylene/sericite composites[J],2010, 2010.
APA	Yang, Rui,Yu, Jian,Liu, Ying,&Wang, Kunhua.(2010).Effects of coupling agents on the natural aging behavior and oxidation profile of high-density polyethylene/sericite composites..
MLA	Yang, Rui,et al."Effects of coupling agents on the natural aging behavior and oxidation profile of high-density polyethylene/sericite composites".(2010).

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