摘要
以羧甲基纤维素钠(CMCNa)、丙烯酰胺(AM)和N-乙烯基吡咯烷酮(NVP)为原料,过硫酸铵为引发剂,在水介质中制备CMCNa-g-(NVP-co-AM)接枝共聚物,考察不同温度及不同离子强度下接枝共聚物水溶液粘度的流变性能。结果表明,相对于CMCNa-g-AM二元共聚物,在盐水溶液中和高温条件下,CMCNa-g-(NVP-co-AM)粘度保留率均有所提高;聚合物溶液Cr3+交联凝胶的流变实验结果显示,m(NVP)∶m(AM)=1∶5为最优比例,此时的三元共聚物CMCNa-g-(NVP-co-AM)具有更优良的抗温性能。
A series of CMCNa-g-（NVP-co-AM） graft copolymers were synthesized by grafting copolymer of AM and NVP onto carboxymethyl cellulose sodium（CMCNa） in aqueous solution using ammonium persulfate（APS） as initiator.The rheological properties of the polymers aqueous solutions were investigated at various temperatures and different concentrations of NaCl.The results showed that the viscosity retention rate of terpolymer solution was higher than that of CMCNa-g-AM on condition of in salt solution and at high temperature.The rheological measurement of Cr3＋ crosslinked gel showed that m（NVP）∶m（AM）=1∶5 was the optimum ratio for the terpolymer of CMCNa-g-（NVP-co-AM）,which possessed higher ability of temperature resistance.
出处
《应用化工》
CAS
CSCD
2011年第5期789-792,共4页
Applied Chemical Industry
基金
吉林省科技发展重点项目(20070311)
关键词
羧甲基纤维素钠
增稠剂
接枝共聚
抗温
耐盐
carboxymethyl cellulose sodium
thickener
graft copolymerization
temperature resistance
salt tolerance
