羧甲基纤维素接枝丙烯酸钠的合成与性能  

Preparation and Properties of Acrylic Acid Grafted on the Sodium Carboxyl Methylcellulose

作　　者：唐清华[1] 宋明超 张娜[1] 王茂宁[1] 马松梅[1] 

机构地区：[1]鲁东大学化学与材料科学学院,山东烟台264025 [2]烟台万华超纤股份有限公司,山东烟台264002

出　　处：《实验室研究与探索》2016年第12期13-17,共5页Research and Exploration In Laboratory

基　　金：国家自然科学基金项目(51302127);鲁东大学人才引进项目(LB2016029)

摘　　要：以羧甲基纤维素钠、丙烯酸为主要原料,在一定条件下通过自由基接枝聚合合成高吸水树脂。分别考察了各种合成条件,如反应温度、反应时间、引发剂配比及用量、交联剂用量、丙烯酸中和度等因素对高吸水树脂吸收能力的影响,确定了最佳合成条件,并用红外光谱仪和扫描电镜对合成产物进行了表征。根据实验分析得到最佳条件为:m(CMCNa)/m(AA)=0.1,m(NMBA)/m(AA)=2.9×10-2,m(Na2S2O8+Na2SO3)/m(AA)=6.5×10-3,m(Na2S2O8)/m(Na2SO3)=2,中和度为70%,反应温度20oC,反应时间6 h。在此条件下合成的高吸水树脂吸收0.9%的Na Cl水溶液为99 g/g。The superabsorbent resin was prepared with sodium carboxyl methylcellulose （CMCNa）, acrylic acid （AA） by means of free radical graft copolymerization. The effects of preparation conditions were investigated, such as copolymerization temperature, reaction time, the proportion and the amount of initiator, the amount of crosslinking agent and the neutralization degree of AA, etc. And the synthesized product was characterized by infrared spectroscopy and scanning electron microscopy. Analyses on the experimental data leads to the optimum preparation conditions, which are as follows, m（CMCNa）/m（AA） =0.1, m（NMBA）/m（AA） =2.9 ×10^-2, m（Na2S2O8 ＋Na2SO3）/m（AA） =6.5 × 10^-3, m（Na2S2O8）/m （ Na2SO3 ） = 2, neutralization degree of acrylic acid is 70% , reaction temperature is 20 ℃, reaction time is 6 h. The water-absorption radio of the superabsorbent resin prepared under the optimum conditions is 99 g/g in 0.9% brine.

关 键 词：高吸水树脂 羧甲基纤维素钠 丙烯酸 N N-亚甲基双丙烯酰胺 接枝共聚 

分 类 号：TQ314.2[化学工程—高聚物工业]