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Position: Home > Articles > Preparation of Super-Absorbents Composites from Kaolin/Sodium Lignosulfonate-g-AA-AM Scientia Silvae Sinicae 2011,47 (8) 134-138

高岭土/木质素磺酸钠-g-AA-AM复合高吸水树脂的制备

作  者:
何新建;谢建军;魏玉;李晟;黄凯;韩心强;张绘营
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
摘  要:
以木质素磺酸钠(LS-Na)、丙烯酸(AA)、丙烯酰胺(AM)为原料,高岭土(Kaolin)为无机添加剂,过硫酸钾(KPS)为引发剂,N,N’-亚甲基双丙烯酰胺(NMBA)为交联剂,通过溶液聚合制备高岭土/木质素磺酸钠-g-AA-AM复合高吸水树脂(LPAAM)。选用正交试验设计方法,以蒸馏水和0.9%NaCl溶液中的平衡吸液倍率为评价参数得到了较优配方:m(AM):m(AA)=1:1,m(KPS)=1.0%,m(NMBA)=0.1%,pH=3。将上述配方制备的LPAAM以不同浓度NaOH于90℃皂化2h,得到皂化后的LPAAM,该树脂在蒸馏水和0.9%NaCl溶液中的平衡吸液倍率分别为1003及89g·g-1。
译  名:
Preparation of Super-Absorbents Composites from Kaolin/Sodium Lignosulfonate-g-AA-AM
作  者:
He Xinjian Xie Jianjun Wei Yu Li Sheng Huang Kai Han Xinqiang Zhang Huiying(School of Materials Science and Engineering,Central South University of Forestry and Technology Changsha 410004)
关键词:
lignin;superabsorbents composites;solution polymerization;absorbency;kaolin
摘  要:
Kaolin/sodium lignosulfonate graft acrylic acid and acrylamide superabsorbents composites(LPAAM) were prepared by solution polymerization using sodium lignosulfonate(LS-Na),acrylic acid(AA)and acrylamide(AM)as raw materials,kaolin as inorganic filler,potassium peroxydisulfate(KPS) as initiator,N,N'-methylene-bis-acrylamide(NMBA)as crosslinker.The optimized formula using orthogonal experiment design based on the assessment of the absorbencies in distilled water and 0.9%NaCl solution was obtained as follows:m(AM):m(AA)=1:1,m(KPS)=1.0%,m(NMBA)=0.1%,pH=3.Then the saponification reaction based on the above-mentioned optimized formula superabsorbent was used with different concentration NaOH solution at 90 ℃ for 2 h.Its absorbencies in distilled water and 0.9% NaCl aqueous solution were respectively 1 003 and 89 g· g-1.

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