聚乙烯吡咯烷酮_壳聚糖共混水凝胶的制备及水的状态.pdf

57 11 Vol1 57 No1 11 2006 11 Journal of Chemical Industry and Engineering ( China) No ember 2006 / 易国斌, 杨少华, 康 正, 郭建维, 崔亦华, 谭帼馨, 崔英德 ( , 510006) : , ( PVP) / ( CH I) , T CH I , SEM PVP/ CHI CH IB PVP g 1 PVP PVP CH I 1 DSC , , CH IB PVP 1B 2 , 421 7% 431 3 % 141 0 % ; CH IB PVP 1B 8 , , DSC , 1 - 123 e DSC 03853 e , , . : ; ; ; : T Q 317 : A : 0438- 1157 ( 2006) 11- 2761- 05 Preparation and water adsorption of polyvinylpyrrolidone/ chitosan blend hydrogel YI Guobin, YANGShaohua, KANG heng, GUO Jianwei, CUI Yihua, TAN Guoxin, CUI Yingde ( School of Light Industry and Chemical Engineering, Guangdong University of Technology , Guangzhou 5 10006, Guangdong, China) Abstract: A poly inylpyrrolidone ( PVP) / chitosan ( CHI) blend hy drogel w as prepared w ith ammonium cerous sulfate as initiator and glutaraldehyde as crosslinking agent1 It w as found that the glass-tr ansition g temperature ( T ) of the blend increased w ith increasing of PVP content1 Microzone of CHI and PVP w ere obser ed o er the surface of hydrogel from SEM micrographs1The sw elling ratio of the hydrogels increased w ith incr easing of PVP content, decreasing PVP molecular w eight or incr easing deacetylation degree of CH I1A t normal temperature, ther e w ere three endothermic peaks obser ed from DSC ther mograms of the hy drogel w ith a CHI B PVP ratio of 1B 2 d