Knowledge Management System Of Shanghai Institute of Applied Physics, CAS
| 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 Publication | JOURNAL OF APPLIED POLYMER SCIENCE
 |
| ISSN | 0021-8995 |
| Volume | 108Issue:2Pages:1365 |
| Abstract | Hydrogels 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 Area | Physics |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 应物所项目组 |
| WOS ID | WOS:000253352500084 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/7756 |
| Collection | 中科院上海应用物理研究所2004-2010年 |
| Corresponding Author | Zhu, 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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