Effect of Sodium Alginate Content on the Properties of Chemical-Ionic Cross-Linked Hydrogel
Chemical-ionic cross-linked hydrogel (CIC) was prepared by using chemical-ionic cross-linker with acrylamide (AM) and sodium alginate (SA) of different contents serving as monomer, N,N-Methylenebisacrylamide (MBA) and calcium chloride (CaC12) acting as cross-linker.Swelling behaviors, micro pore structures, percentage of calcium atoms and tensile fracture stress ofCIC hydrogel were investigated by weighting instrument, field transmission electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDX) and tensile strength testing machine, respectively.The results indicate that with the contents of SA from 0.1g/20ml up to 0.4g/20ml, atom percentage of calcium of CIC hydrogel increases from 0.03 at% to 0.14 at%, and ionic cross-linked mechanism network in composite hydrogel increases, maximum swelling ratio (MSR) decreases from 21.96 g/g to 14.06 g/g, the pore structures which are interconnect at 0.1g gradually turn to cellular and isolate, and then appear compact.Maximum tensile fracture stress of hydrogel reinforced from 0.03 MPa up to 0.18 MPa.
Hydrogel Chemical-ionic cross-linking Sodium alginate Calcium chloride
ZHANG Nian-Yi ZHANG Qing-Song GAO Xue-Feng CHEN Li
School of Material Science and Engineering, State Key Laboratory of Hollow Fiber Membrane Materials and Processes, Tianjin Polytechnic University, Tianjin 300387, P.R.China
国际会议
The Eighth China National Conference on Functional Materials and Applications(第八届中国功能材料及其应用学术会议)
哈尔滨
英文
663-668
2013-08-23（万方平台首次上网日期，不代表论文的发表时间）