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在医药工业及一些能源(如离子交换膜型氢氧燃料电池)方面的应用中,要求一种耐温及耐氧化的离子交换树脂,通用的聚苯乙烯磺酸型离子交换树脂的耐温及耐氧化性很差;当它们处于热氧化环境中时,由于苄位氢原子活泼(D_(C-H)73仟卡/克分子),易被氧化而导致聚合物分子的断链。例如,不溶性的聚苯乙烯-二乙烯苯磺酸树脂在有溶解氧气、过氧化物、高锰酸钾或过硫酸盐等的水溶液中,当氧化电位大于0.7伏时,在70℃(甚至室温下)就逐渐
In the pharmaceutical industry and some energy sources (such as ion exchange membrane type oxy-fuel cell) applications, requires a temperature and oxidation resistant ion exchange resin, polystyrene polystyrene sulfonic acid ion exchange resin temperature and Oxidation resistance is very poor. When they are in a thermal oxidation environment, they are easily oxidized to cause chain scission of polymer molecules due to the active hydrogen atom at benzyl position (CH_ 73 kcal / mol). For example, the insoluble polystyrene-divinylbenzenesulfonic acid resin has an oxidation potential of more than 0.7 volts in an aqueous solution of dissolved oxygen, peroxide, potassium permanganate or the like at a temperature of 70 ° C (even at room temperature Under) gradually