作　　者： ; ;

机构地区： 中国人民解放军第一军医大学药物研究所

出　　处： 《华南师范大学学报（自然科学版）》 1997年第4期44-48,共5页

摘　　要： 本文通过测定不同交联度的两性树脂在不同盐浓度溶液中的膨胀度变化及其对盐———明胶混和液动态脱盐影响，考察两性树脂的杜南吸附容量变化规律．结果是交联度低的两性树脂，虽然其离子阻滞能力有所下降，但因两性树脂的特殊性在高浓度盐溶液中膨胀度反而增大，杜南吸附作用增强，对盐———明胶混和液分离时分辨率显著提高．而交联度高的两性树脂则离子阻滞能力较强，在低浓度盐溶液中脱盐能力较强． The Donnan sorption of amphoteric resins with different crosslinking degree is investigated by measuring the swelling degree in salt solution of various concentrations and dynamic separation of the salt from the gelatine.Results show that though the ion retardation of the low crosslinking degree resin decreases to some extent,but in concentrated salt solution,the swelling degree increases,the Donnan sorption strengthened,so the resolution is raised remarkably for separating the salt from gelatine.In the low concentration salt solution,the desalination effect of the high crosslinking resin is better than that of low crosslinking resin by taking advantage of the ion retardation.

关 键 词： 两性树脂 离子阻滞 杜南吸附 交联度

领　　域： [化学工程]