摘要
采用反相悬浮聚合法制备了聚(丙烯酸/丙烯酰胺)(PAAM)、聚(丙烯酸/2-丙烯酰胺基-2-甲基丙磺酸)(PAAMPS)两种共聚高吸水树脂,并对两者的吸液吸附性能进行了比较。吸液成吸附初期,PAAM、PAAMPS在蒸馏水、NaCl等各种盐溶液中吸液倍率以及对金属离子溶液的吸附量随吸液或吸附时间的增加而迅速增加,约10 min达吸液、吸附平衡,且在各种盐溶液中的吸液倍率明显低于蒸馏水中的,PAAMPS的耐盐性比PAAM更好。高吸水树脂中AMPS代替AM后,对金属离子Cu2+、Cr3+的平衡吸附量几乎不变,但对Fe3+的平衡吸附量略有减小。PAAM较PAAMPS在CuCl2、FeCl3、CrCl3溶液中平衡吸液时间明显延长。
Two types of high water absorbing resins, poly （acrylic acid-co-acrylamide） （PAAM） and poly（acrylic acid co-2-acrylamido-2-methyl-propane sulfonic acid）（PAAMPS）were synthesized by reverse suspension copolymerization. Their absorbeneies and adsorptions are investigated in distilled water, NaCl solution and various salt solutions. In initial adsorption stage, the absorbencies in distilled water, 0.9 % NaCl solution and various salt solutions and the adsorption uptakes of metal ions for PAAM and PAAMPS increase fast and both reach an equilibrium values within 10 min. The absorbencies PAAMPS in salt solutions are clearly lower than that in distilled water, the equilibrium PAAMPS are greater than that of PAAM and the salt-resistant properties of PAAMPS are of PAAM. When AMPS monomer is added instead of AM, the equilibrium adsorption of PAAM and absorbencies of better than that uptakes hardly change for Cu^2＋ and Cr^3＋ , but decreases slightly for Fe^3＋. Absorbing time of PAAM becomes longer than that of PAAMPS.
出处
《功能高分子学报》
CAS
CSCD
北大核心
2008年第4期448-451,共4页
Journal of Functional Polymers
基金
湖南省自然科学基金重点项目资助(07JJ3109
06JJ2059)
中南林业科技大学人才引进基金项目资助(101-0656)
