期刊
JOURNAL OF APPLIED POLYMER SCIENCE
卷 120, 期 2, 页码 974-980出版社
WILEY-BLACKWELL
DOI: 10.1002/app.33116
关键词
biomaterials; gelation; hydrogels
资金
- National Natural Science Foundation of China [50773018]
- Education Department of Henan Province [2008A430003]
- Science and Technology Department of Henan Province [102300410119]
Because the properties and applications of hydrogels are determined by the formation principle and conditions of the hydrogels, novel methods for preparing hydrogels have increasingly triggered scientists' interest. Here the Diels-Alder reaction was applied to the preparation of hydrogels. For the resultant polymeric diene and dienophile, the Diels-Alder reaction could be performed in water. The gelation time was found to be closely related to the temperature. The gelation time decreased with the temperature increasing. Moreover, the hydrogels were stable in water, and the retro-Diels-Alder reaction could be performed in N,Ndimethylformamide easily. A study of the swelling ratio indicated that the hydrogels were responsive to the temperature. The hydrogel formation method described here provides several advantages, such as mild reaction conditions, no initiator or catalyst, a tunable gelation rate, and thermal reversibility, and it has great potential for the preparation of biomaterials. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 120: 974-980, 2011
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