引用本文:
陈雪萍, 朱耕宇, 黄志明, 翁志学. 聚丙烯酸钠吸水性树脂的抗电解质性能[J]. 应用化学,
2003, 20(9): 875-878.
Citation: CHEN Xue-Ping, ZHU Geng-Yu, HUANG Zhi-Ming, WENG Zhi-Xue. Properties of Anti-electrolyte Acrylic-Based Superabsorbent[J]. Chinese Journal of Applied Chemistry, 2003, 20(9): 875-878.
Citation: CHEN Xue-Ping, ZHU Geng-Yu, HUANG Zhi-Ming, WENG Zhi-Xue. Properties of Anti-electrolyte Acrylic-Based Superabsorbent[J]. Chinese Journal of Applied Chemistry, 2003, 20(9): 875-878.
聚丙烯酸钠吸水性树脂的抗电解质性能
摘要:
采用反相悬浮法合成聚丙烯酸钠(PAANa)及丙烯酸钠丙烯酰胺共聚物(P(AANa-AM))的吸水性树脂,着重研究了它们的抗电解质性能。阴离子型丙烯酸钠(AANa)单体与非离子型丙烯酰胺(AM)共聚,由于不同亲水基团间的协同效应,提高了树脂的抗电解质性能,当AM/(AM+AANa)为7.42%(质量分数)时,二元共聚树脂的吸液性能最佳。并研究了液体的种类及电解质溶液的浓度对吸液率的影响,以NaCl为例,研究发现,树脂的吸液率Q5/3与NaCl的浓度成反比。另外,PAANa和P(AANa-AM)树脂的溶胀前期的动力学可用一级动力学方程来拟合,并得到其动力学常数k。
English
Properties of Anti-electrolyte Acrylic-Based Superabsorbent
Abstract:
Polyacrylate sodium(PAANa) and poly(acrylate sodium-acrylamide) were synthesized by inverse suspension polymerization and their anti-electrolyte properties were investigated. Copolymerisation of AANa with AM could lead to increasing the anti-electrolyle property of copolymer due the presence of synergistic action between the different hydrophillic groups of polymer components. The copolymer with mol fraction of AM to (AM+AANa)=7.42% showed the best liquid absovability. In the case of aqueous NaCl solution the liquid absorption Q5/3 is inversly proportional to the NaCl concentration. In addition the kinetics behavior of PAANa and P((AANa+AM) resins at initial swelling stage was found to be fitted with first order kinetic reaction and the kinetic constant was given.
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Key words:
- polyacrylate sodium
- / acrylamide
- / anti-electrolyte
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