CAS OpenIR  > 中科院上海应用物理研究所2004-2010年
Investigation on the formation mechanisms of hydrogels made by combination of gamma-ray irradiation and freeze-thawing
Yang, XM; Liu, Q; Chen, XL; Zhu, ZY(朱智勇); Zhu, ZY (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
2008
Source PublicationJOURNAL OF APPLIED POLYMER SCIENCE
ISSN0021-8995
Volume108Issue:2Pages:1365
AbstractHydrogels based on poly(vinyl alcohol) (PVA)/water-soluble chitosan (ws-chitosan)/glycerol were prepared by gamma-ray irradiation, freeze-thawing, and combination of gamma-ray irradiation and freeze-thawing, respectively. The influence of freeze-thawing cycles, the irradiation doses, and the sequence of freeze-thawing and irradiation processes on the rheological, swelling, and thermal properties of these hydrogels was investigated to evaluate the formation mechanisms of hydrogels made by combination of irradiation and freeze-thawing. For hydrogels made by freeze-thawing followed by irradiation, the physical crosslinking is destroyed partially while chemical crosslinking is formed by irradiation. However, the chemical crosslinking density reduces with the increase of freeze-thawing cycles. Hydrogels made by irradiation followed by freeze-thawing bear less degree of physical crosslinking with the increase of irradiation dose for the increased chemical crosslinking density. It is found that these hydrogels own larger swelling capacity and better transparent appearance than those made by freeze-thawing followed by irradiation. Moreover, the former hydrogels have larger mechanical strength than the latter at low freeze-thawing cycles. (c) 2008 Wiley Periodicals, Inc.
Subject AreaPhysics
Indexed BySCI
Language英语
Funding Project应物所项目组
WOS IDWOS:000253352500084
Citation statistics
Cited Times:16[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/7756
Collection中科院上海应用物理研究所2004-2010年
Corresponding AuthorZhu, ZY (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
Recommended Citation
GB/T 7714
Yang, XM,Liu, Q,Chen, XL,et al. Investigation on the formation mechanisms of hydrogels made by combination of gamma-ray irradiation and freeze-thawing[J]. JOURNAL OF APPLIED POLYMER SCIENCE,2008,108(2):1365.
APA Yang, XM,Liu, Q,Chen, XL,Zhu, ZY,&Zhu, ZY .(2008).Investigation on the formation mechanisms of hydrogels made by combination of gamma-ray irradiation and freeze-thawing.JOURNAL OF APPLIED POLYMER SCIENCE,108(2),1365.
MLA Yang, XM,et al."Investigation on the formation mechanisms of hydrogels made by combination of gamma-ray irradiation and freeze-thawing".JOURNAL OF APPLIED POLYMER SCIENCE 108.2(2008):1365.
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