A novel aliphatic sulfonie acid ion exchange resin was prepared from ethylenediamined polystyrene(PS-acyl-EDA),2-acrylamido-2-methylproanesulfonic acid(AMPS)by Michael reaction.This kind of resin has a longer chain th...A novel aliphatic sulfonie acid ion exchange resin was prepared from ethylenediamined polystyrene(PS-acyl-EDA),2-acrylamido-2-methylproanesulfonic acid(AMPS)by Michael reaction.This kind of resin has a longer chain than conventional sulphonic polystyrene resin,that is,the former is easier to react with other compound.The effect of the reaction time,reaction temperature,catalyst amount,reagent amount and the charge ration on reaction result were discussed.Under the optimum condition,the maximum loading of the sulfonie acid ion exchange resin could be up to 1.15 mmol·g-1 resin.The product was characterized with FT-IR.The filling material of chromatographic column could be prepared by this method.展开更多
以D072树脂为离子交换材料、盐酸为洗脱剂,建立离子交换树脂分离富集—电感耦合等离子体质谱法（ICP-MS）测定岩盐中水溶性铯的方法。考察吸附酸度、树脂用量、氯化钠浓度对D072树脂分离富集铯的影响,并优化静态解吸和动态解吸的实验条...以D072树脂为离子交换材料、盐酸为洗脱剂,建立离子交换树脂分离富集—电感耦合等离子体质谱法（ICP-MS）测定岩盐中水溶性铯的方法。考察吸附酸度、树脂用量、氯化钠浓度对D072树脂分离富集铯的影响,并优化静态解吸和动态解吸的实验条件。结果表明,当溶液p H值为7、氯化钠浓度为3‰、树脂用量为10 m L时,铯的吸附率可达93.6%;采用30 m L 50%盐酸分6次洗脱,铯的回收率超过90%;经分离富集后,可以在一定程度上实现铯与钠的分离,降低基体效应。方法的检出限为0.02μg/g,加标回收率在90.2%-99.9%之间,样品重复分析的相对标准偏差〈2.5%。展开更多
以2-丙烯酰胺-2-甲基丙磺酸(AMPS)为单体、CuCl/N,N,N′,N′-四甲基乙二胺(TMEDA)为催化体系,氯乙酰化聚苯乙烯微球(PS-acyl-Cl)为大分子引发剂,经原子转移自由基聚合反应(ATRP),于微球表面接枝聚脂肪族磺酸(PAMPS)链段获得脂肪族磺酸...以2-丙烯酰胺-2-甲基丙磺酸(AMPS)为单体、CuCl/N,N,N′,N′-四甲基乙二胺(TMEDA)为催化体系,氯乙酰化聚苯乙烯微球(PS-acyl-Cl)为大分子引发剂,经原子转移自由基聚合反应(ATRP),于微球表面接枝聚脂肪族磺酸(PAMPS)链段获得脂肪族磺酸基强酸性阳离子交换树脂(PS-g-PAMPS)。考察了反应温度、溶剂体系、pH值、催化剂、反应时间等条件对接枝反应的影响,在优化的反应条件下,使用氯乙酰基担载量为3.82 mmol g 1的PS-acyl-Cl,10 h可获得担载量为1.99 mmol g 1的PS-g-PAMPS。产物经过红外,元素分析表征。该PS-g-PAMPS较传统的磺酸基树脂有较长的手臂长度,位阻小,易于和其它物质反应,TG分析显示具有很好的热稳定性。展开更多
文摘A novel aliphatic sulfonie acid ion exchange resin was prepared from ethylenediamined polystyrene(PS-acyl-EDA),2-acrylamido-2-methylproanesulfonic acid(AMPS)by Michael reaction.This kind of resin has a longer chain than conventional sulphonic polystyrene resin,that is,the former is easier to react with other compound.The effect of the reaction time,reaction temperature,catalyst amount,reagent amount and the charge ration on reaction result were discussed.Under the optimum condition,the maximum loading of the sulfonie acid ion exchange resin could be up to 1.15 mmol·g-1 resin.The product was characterized with FT-IR.The filling material of chromatographic column could be prepared by this method.
文摘以D072树脂为离子交换材料、盐酸为洗脱剂,建立离子交换树脂分离富集—电感耦合等离子体质谱法（ICP-MS）测定岩盐中水溶性铯的方法。考察吸附酸度、树脂用量、氯化钠浓度对D072树脂分离富集铯的影响,并优化静态解吸和动态解吸的实验条件。结果表明,当溶液p H值为7、氯化钠浓度为3‰、树脂用量为10 m L时,铯的吸附率可达93.6%;采用30 m L 50%盐酸分6次洗脱,铯的回收率超过90%;经分离富集后,可以在一定程度上实现铯与钠的分离,降低基体效应。方法的检出限为0.02μg/g,加标回收率在90.2%-99.9%之间,样品重复分析的相对标准偏差〈2.5%。
文摘以2-丙烯酰胺-2-甲基丙磺酸(AMPS)为单体、CuCl/N,N,N′,N′-四甲基乙二胺(TMEDA)为催化体系,氯乙酰化聚苯乙烯微球(PS-acyl-Cl)为大分子引发剂,经原子转移自由基聚合反应(ATRP),于微球表面接枝聚脂肪族磺酸(PAMPS)链段获得脂肪族磺酸基强酸性阳离子交换树脂(PS-g-PAMPS)。考察了反应温度、溶剂体系、pH值、催化剂、反应时间等条件对接枝反应的影响,在优化的反应条件下,使用氯乙酰基担载量为3.82 mmol g 1的PS-acyl-Cl,10 h可获得担载量为1.99 mmol g 1的PS-g-PAMPS。产物经过红外,元素分析表征。该PS-g-PAMPS较传统的磺酸基树脂有较长的手臂长度,位阻小,易于和其它物质反应,TG分析显示具有很好的热稳定性。
