当前位置: 首页 > 文章 > 混合盐溶液中KLPAAM复合高吸水树脂吸液性能的研究 中南林业科技大学学报 2010,30 (10) 107-111
Position: Home > Articles > Absorbencies of KLPAAM superabsorbents composites in multiple component salt-mixing solutions Journal of Central South University of Forestry & Technology 2010,30 (10) 107-111

混合盐溶液中KLPAAM复合高吸水树脂吸液性能的研究

作  者:
谢建军;何新建;张绘营;黄凯;韩心强
单  位:
中南林业科技大学材料科学与工程学院
关键词:
木质素;复合高吸水树脂;溶液聚合;吸液性能;高岭土;混合盐溶液
摘  要:
采用自制高岭土/木质素磺酸盐接枝丙烯酰-丙烯酸复合高吸水树脂(KLPAAM),室温下测定了一元、二元及多元混合盐溶液中的吸液性能,蒸馏水和0.9%NaCl溶液中的平衡吸液倍率分别为1 003 g/g及89 g/g;pH约为6.5时在溶液离子强度为0.1的多元混合盐溶液中的吸液倍率在前30 min随吸液时间增大迅速增加,50min左右时达到最大,然后缓慢下降,最后趋近稳定。同时,KLPAAM复合高吸水树脂在多元混合盐溶液中的平衡吸液倍率顺序为:1#>2#>4#>3#>5#>7#>6#>8#,且1#、2#、3#、4#溶液中平衡吸液倍率基本相同。吸液初期(t<60 min)各盐溶液中吸液倍率与时间的关系不符合二级动力学方程:dQ/dt=kQ(Qeq-Q)2。
译  名:
Absorbencies of KLPAAM superabsorbents composites in multiple component salt-mixing solutions
作  者:
XIE Jian-jun,HE Xin-jian,ZHANG Hui-ying,HUANG Kai,HAN Xin-qiang(School of Materials Science and Engineering,Central South University of Forestry and Technology,Changsha 410004,Hunan,China)
关键词:
lignin;superabsorbents composites;solution polymerization;absorbency;kaolin;salt-mixing solution
摘  要:
The absorbencies of the kaolin/sodium lignosulfonate graft acrylic acid and acrylamide superabsorbents composites(KLPAAM) in unary,binary and multiple salt-mixing solutions were measured by using self-made KLPAAM.The balance absorbency of KLPAAM in distilled water and 0.9% NaCl aqueous solution were 1 003 g/g and 89 g/g respectively.And with pH≈6.5,ionic strength of each solution(I= 0.1) for the multiple salt-mixing solutions,the absorbencies increased fast with an increase of imbibing time before the initial time(t< 30 minutes),reached respective maximum values at about 50 minutes,then decreased slowly and at last tended to respective equilibrium values.The sequence of the equilibrium absorbencies in turn was 1#>2#>4#>3#>5#>7#>6#>8#;and the absorbencies were almost equal in solution 1#,2#,3#,4#.The absorbencies in initial time(t < 60 minutes) did not agree with the second-class kinetics equation:dQ/dt=kQ(Qeq-Q)2..

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