Chitosan-poly（acryfic acid） hydrogel bonded with Eu^3＋ was prepared by radical solution polymerization. Biodegradable chitosan, N,N＇-methylen-diacrylamide, and potassium persulphate were used as the basic material...Chitosan-poly（acryfic acid） hydrogel bonded with Eu^3＋ was prepared by radical solution polymerization. Biodegradable chitosan, N,N＇-methylen-diacrylamide, and potassium persulphate were used as the basic material, cross-linking agent, and initiator, respectively. The structure and thermal property of hydrogel were characterized by infrared spectrometry, X-ray diffraction, scanning electron microscopy, and differential scanning calorimetry. The swollen property and fluorescent performance were also characterized. The results showed that the rare earth presented unique distribution in the hydrogel due to the formation of chemical bonds after polymerization. The glass transition temperature of the hydrogel decreased remarkably, which might broaden the range of its elastic application considerably. Moreover, the characteristic fluorescent emission of Eu^3＋ was observed in the hydrogel, which was indicative of the excellent luminescent performance.展开更多
基金Special Funds for Major State Research Projects and the National Natural Science Fund of China (50373034)
文摘Chitosan-poly（acryfic acid） hydrogel bonded with Eu^3＋ was prepared by radical solution polymerization. Biodegradable chitosan, N,N＇-methylen-diacrylamide, and potassium persulphate were used as the basic material, cross-linking agent, and initiator, respectively. The structure and thermal property of hydrogel were characterized by infrared spectrometry, X-ray diffraction, scanning electron microscopy, and differential scanning calorimetry. The swollen property and fluorescent performance were also characterized. The results showed that the rare earth presented unique distribution in the hydrogel due to the formation of chemical bonds after polymerization. The glass transition temperature of the hydrogel decreased remarkably, which might broaden the range of its elastic application considerably. Moreover, the characteristic fluorescent emission of Eu^3＋ was observed in the hydrogel, which was indicative of the excellent luminescent performance.
