摘要
采用单因素法以吸水树脂在蒸馏水和盐溶液中的平衡吸液倍数为性能指标,以m(丙烯酸)∶m(丙烯酰胺)、中和度、m(木质素磺酸钠)、m(引发剂)、m(交联剂用量)、温度为变量,探索将丙烯酸(AA)、丙烯酰胺(AM)两种高活性物质接枝到木质素磺酸钠(LS-Na)上的最佳条件。结果表明,当温度为90℃,LS-Na为1.4 g,AM为4 g,AA为16 g,过硫酸钾(KPS)0.3 g,N,N-亚甲基双丙烯酰胺(交联剂)质量为0.002 g时,所制备的高聚物性能最好。在最优条件下合成出的吸水树脂的平衡吸蒸馏水倍率和吸盐水倍率较高,分别为1 282,143 g/g。通过红外光谱分析可得聚合物分子中存在羧基和酰胺基,说明具有理想分子结构的聚合物被成功的合成出来。通过聚合物的SEM照片可得,聚合物LS-Na-g-PAA/PAM吸水树脂的多孔结构有利于增强聚合物的吸液能力。
The mass of sodium lignosulfonate carboxymethylcellulose( LS-Na),acrylamide( AM),potassium peroxydisulfate( KPS),acrylic acid( AA),N,N-methylenebis acrylamide and neutralization degree,temperature as variable,by the single-factor method exploration the optimized synthesis conditions of LSNa-g-PAA/PAM based on the absorbency in distilled water and Na Cl solution. The results indicate that when m( LS-Na) is 1. 4 g,m( AM) is 4 g,m( AA) is 16 g,m( KPS) is 0. 3 g,m( crosslinker) is0. 002 g,temperature is 90 ℃,the absorbency of polymer is optimum. The optimum absorbency in distilled water were 1 282 g/g and in Na Cl aqueous solution is 143 g/g. The structure of polymer was characterized by FTIR,the results of FTIR analysis show that the ideal molecular structure was synthesized. The surface topography of the polymer solid powder were tested by scanning electron microscope( SEM),the result demonstrates that the polymer with porous structure can enhance absorbency of polymer.
作者
吕高磊
韩福芹
张春涛
LU Gao-lei;HAN Fu-qin;ZHANG Chun-tao(College of Science, Northeast Forestry University, Harbin 150040, China)
出处
《应用化工》
CAS
CSCD
北大核心
2018年第4期762-766,共5页
Applied Chemical Industry
基金
黑龙江省交通厅基金项目(2012-43)
关键词
木质素
高吸水树脂
溶液聚合
吸液性能
lignosulfonate
superabsorbents composites
solution polymerization
absorbency