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笼形聚羧酸树脂的孔道及笼腔内的大分子场时溶液中的外来离子有吸留作用。吸留量不但决定于树脂的交联度,而且与交联链的性质有关。例如,以刚性的二乙烯基苯(DVB)作交联剂,所得笼形树脂对钒氧离子(VO~(2+))的吸留量随交联度增高而增大;若以柔性的双甲基丙烯酸三甘醇酯(TGDMA)作交联剂,则树脂对VO~(2+)离子的吸留量随交联度增大而减小。作者认为,后者是在聚合反应中产生次级交联的结果。
Cage of polycarboxylate resin and caged cavity macromolecular field when the solution of foreign ions have occlusion. The amount of storage depends not only on the degree of crosslinking of the resin but also on the nature of the crosslinked chain. For example, with rigid divinylbenzene (DVB) as a cross-linking agent, the retention of vanadium-oxygen ions (VO ~ (2+)) in the resulting clathrate resin increased with the increase of the degree of cross-linking. Triethylene glycol dimethacrylate (TGDMA) as a cross-linking agent, the retention of VO ~ (2 +) ions decreases with the increase of the degree of cross-linking. The authors believe that the latter is the result of secondary crosslinking in the polymerization reaction.