Synthesis and properties of with temperature and light sensitivities P(NIPAmcoDMAEEAPB) hydrogel
1.School of Environment, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2.School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China
Abstract： The copolymer hydrogel with terperature and light sensitivities was prepared by copolymerization of Nisopropylacrylamide with a newly developed watersoluble azobenzenecontaining monomer of 4(4((4ethoxyphenyl)diazenyl) phenoxy)N(2(methacryloyloxy)ethyl)N,Ndimethylbutan1ammonium bromide (DMAEEAPB). The properties of the hydrogel were determined by differential scanning calorimetry, UVVis absorption spectrometry and gravimetry. The results show that the hydrogel has a very quickly transcis photoisomerization rate upon UV irradiation with finished switch only for 4 min irradiation.The lower critical solution temperature (LCST) and the temperaturesensitivity of the copolymer hydrogel decreased with the increasing of DMAEEAPB content. By UV irradiation, the temperaturesensitivity of the copolymer hydrogel recovers with increased LCST of 0.8~1.2 ℃. The swelling ratio of the hydrogel can be enhanced 0.34~0.80 by irradiation in a proper temperature range .
李丽霞1,2, 邢晓东2, 刘祖亮2, 皮俊梅2. 温度／光双重敏感P(NIPAmcoDMAEEAPB)水凝胶的制备和性能[J]. 江苏大学学报（自然科学版）, 2012, 33(6): 696-700.
Li Lixia1,2, Xing Xiaodong2, Liu Zuliang2, Pi Junmei2. Synthesis and properties of with temperature and light sensitivities P(NIPAmcoDMAEEAPB) hydrogel[J]. Journal of Jiangsu University(Natural Science Eidtion)
, 2012, 33(6): 696-700.
2012, Vol. 33 
