Nanocellulose/Poly(2-(dimethylamino)ethyl methacrylate)Interpenetrating polymer network hydrogels
Novel pH-sensitivity and thermo-responsive interpenetrating network(IPN)hydrogels were prepared based on nanofibrillated cellulose(NFC)and poly(2-(dimethylamino)ethyl methacrylate)(PDMAEMA)via crosslinking free radical polymerization.Attenuated total refraction Fourier-transform infrared spectroscopy(ATR-FTIR)confirmed the co-existance of NFC and PDMAEMA.Scanning electron microscopy(SEM)measurements showed that IPN hydrogels porous structure.The thermal stability of the hydrogel was evaluated with thermogravimetric analysis(TGA),and its maximum decomposition rate occurred at 300℃.Water swelling experiments indicated that the hybrid hydrogels were both pH-sensitive and temperature-sensitive.Higher swelling ratios were found at lower temperature as well as at pH <5 or>9.The swelling ratios were increased when the NFC content was increased.According to the Langmuir fitting,the maximum adsorption capacity Cu(Ⅱ)and Pb(Ⅱ)were 116.28 mg/g and 85.47 mg/g,respectively.Kinetic studies explained pseudo-second-order as the best fit.Isotherm studies conducted at different temperatures revealed applicability of the Langmuir isotherm model.Comparative studies proved the effectiveness of the hybrid hydrogels to other reported cellulose-based adsorbents and it has the potential applications in drug delivery,water treatment,farming,forestry,horticulture etc.
nanocellulose interpenetrating polymer network hydrogel pH-sensitivity thermosensitivity adsorption
Jian LI Zihua XIA Luyang ZHAO Ruyuan SONG Wei-bing WU
Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology,Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources Nanjing Forestry University Nanjing,210037,China
国际会议
第五届制浆造纸新技术国际研讨会(ISETPP)暨第三届国际造纸与环境学术大会(IPEC)
广州
英文
1-6
2016-11-07（万方平台首次上网日期，不代表论文的发表时间）