Peculiar Temperature Dependence on the Binding of Acid Dye by Crosslinked Poly(4-vinylpyridine) -The Effect of Inorganic Electrolytes-

가교폴리(4-비닐피리딘)과 산성염료와의 결합에 대한 특이한 온도의존성 - 무기전해질의 효과 -

The extent of binding of acid dye (methyl orange) by crosslinked poly-(4-vinylpyridine) (CHP4VP) has been investigated in aqueous solution containing of inorganic electrolytes such as NaCl and NaSCN. It was found that the first binding constants ($K_{1}$) in the presence of the salts were smaller than those in the absence of the salts and the values of $K_{1}$ showed a bell-shaped curve against temperature. These results are discussed in terms of both the competition binding between the dye and salt anions for the crosslinked polymer and the change of hole size of CHP4VP with the addition of the salts.