P(St-co-MAA)乳液体系对CaCO_3结晶的调控

In this paper, polymer latices P(St-co-MAA) were used to control the crystallization of CaCO 3, and the influence of the lattices on the crystallization habit and morphology was studied by combination of XRD, FTIR and SEM. The mechanism of the morphology transformation of CaCO 3 from calcite to vaterite with the increase of polar group content in latex was investigated. The concentrating effect of calcium ions on the latex surface inhibited the transformation from vaterite to calcite.

P507(K)-醇-正庚烷-水四组分微乳液的渗透现象——2.导电机理的研究

本文根据阳离子导电机理,圆满地解释了P507(K)-醇(正丙醇—正已醇)-正庚烷-水四组分组成的W/O型微乳液的活化能-含水量曲线。并发现含水量较少、温度低于30℃时,表面活性剂阴离子与K^+组成的离子对,充当导电载体。

双水相微乳液膜体系萃取钴、镍研究

双水相萃取是适用于分离提纯痕量的生物活性物质的新型萃取过程。本文以P204为载体,TBP为改性剂,煤油为表面活性剂,氢氧化钠、碳酸钠和氨水分别为皂化剂,建立双水相微乳液膜萃取分离钴、镍体系,考察了萃原液浓度、P204浓度、油水相比、萃原液的pH值和萃取时间五个因素对双水相微乳液膜萃取体系分离钴镍的影响。实验结果表明,10%P204+5%TBP+85%煤油的氨水、氢氧化钠、碳酸钠皂化微乳液,调节萃原液pH为2.0,油水相比V(O):V(W)为2∶1,萃取10 min,可以使浓度为0.06 mol/L萃原液体系中的钴镍最大程度分离。