Radiation effects on physically cross-linked agarose hydrogels

CORC > 北京大学 > 化学与分子工程学院

	Radiation effects on physically cross-linked agarose hydrogels
	Wang Xiao ; Ao Yin-Yong ; Huang Wei ; Liu Bo ; An You ; Zhai Mao-Lin
刊名	NUCLEAR SCIENCE AND TECHNIQUES
	2015
关键词	Agarose Hydrogel gamma-radiation Radiolytic products Structure analysis SWELLING BEHAVIOR AQUEOUS-SOLUTIONS CHITOSAN IRRADIATION LINKING
英文摘要	As a potential matrix of three-dimensional gel dosimeter, agarose hydrogels will be used for measuring radiation doses, hence the importance of studying their radiation resistance and radiolysis mechanism. Physical property and chemical structure of physically cross-linked agarose hydrogel samples irradiated to 0-200 kGy by Co-60 gamma-rays were analyzed by universal testing machine, gel permeation chromatography, fourier transform infrared spectrometer, ultraviolet visible spectroscopy, nuclear magnetic resonance, and gas chromatography. The results showed that agarose hydrogels had good radiation stability below 25 kGy, and the maximum compression strength of sample was ca. 0.1 MPa at 25 kGy. The irradiated samples degraded obviously and liquefied gradually with increasing doses. Compared with unirradiated sample, carbonyl groups, which generated from the molecular chains of agarose hydrogels, were observed at 25 kGy and increased gradually with dose. The main gas products evolved from irradiated agarose hydrogels were H-2, CO2, CO and CH4. Based on the analysis of radiolytic products, the radiolysis mechanism of agarose hydrogels under gamma-radiation was proposed.; SCI(E); ARTICLE; huangwei839@126.com; mlzhai@pku.edu.cn; 5; 50-54; 26
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/439420]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Wang Xiao,Ao Yin-Yong,Huang Wei,et al. Radiation effects on physically cross-linked agarose hydrogels[J]. NUCLEAR SCIENCE AND TECHNIQUES,2015.
APA	Wang Xiao,Ao Yin-Yong,Huang Wei,Liu Bo,An You,&Zhai Mao-Lin.(2015).Radiation effects on physically cross-linked agarose hydrogels.NUCLEAR SCIENCE AND TECHNIQUES.
MLA	Wang Xiao,et al."Radiation effects on physically cross-linked agarose hydrogels".NUCLEAR SCIENCE AND TECHNIQUES (2015).