高分子型氧漂稳定剂水解聚丙烯酰胺HPAM稳定机理的探讨

A Discussion on the H_2O_2 Bleaching Stabilization Mechanism of Hydrolysed High Molecular Polyacrylamide HPAM

目前国际公认的H_2O_2漂白稳定理论,是通过螯合剂去螯合Cu^(++)、Fe^(+++)、Mn^(++)等重金属离子而达到稳定的目的,这是不够全面的。因为通过螯合理论所设计的稳定剂,大多需再加其他组分才能得到良好的效果。我们根据H_2O_2的分解和漂白原理,模拟水玻璃稳定的特性而进行的一系列研究工作表明:H_2O_2漂白稳定机理以吸附为主,即胶团之间通过静电吸附而达到稳定的目的。据此研究出AR-702及AR-720HPAM高分子型氧漂稳定剂,经过有关工厂试验证明可与水玻璃媲美,其成本也较其他非硅型稳定剂低廉。

The author points out that the theory of hydrogen peroxide stabilization which is achieved by combining some kinds of metallic ions, i. e. Cu2+ ,Fe3+ ,Mn2+ with complex builders, which has been widely accepted world wide, is not an enough complete one, as in fact, the stabilizers designed on base of this theory can only have good effect in case of having the help of other auxiliaries. According to the mechanism of chemical de-composition and bleaching principle of hydrogen peroxide, and imitating the characters of stabilization of sodi-um silicate, the author finds that the stabilization of hydrogen peroxide in bleaching process mainly depends on the absorption ability, i.e. stabilization is obtained via static absorption produced among chemical groups. Macro-molecular bleaching auxiliaries AR-702 and AR-720 HP AM are designed on base of this mechanism, these auxiliaries have good effect as compared with sudium silicate and lower cost as compared with other nonsilicate stabilizers.