不同结构的有机硅在洗涤过程中的吸附性能研究

Study on the adsorption performance of silicone with different structures in the washing process

运用改进的硅钼蓝分光光度法,测试了模拟洗涤后吸附在洗衣机壁表面和织物上的微量有机硅的量,研究分析了不同类型的7种有机硅结构与吸附性能的关系。结果表明,分子极性强、分子末端有极性基团封端、水溶性较低的有机硅在极性器壁表面和织物上的吸附量均较高;有侧链且侧链结构越复杂比无侧链的有机硅在织物上的吸附量要高,这与在器壁表面的吸附正好相反,与织物和器壁的表面特性有关;氨基官能团在硅油中的分布越均匀,乳液粒径越小,越有利于与纤维表面上的羟基、羧基吸附,吸附量也越高。

The relationship of the silicone adsorption and its structure was studied through testing the silicone contents on the fabric and the wall by silicon molybdenum blue spectrophotometry. The relation of 7 kinds of silicone structures and their adsorptive capacity was investigated. The results showed that stronger the silicone polarity, polar groups as the end-group, the worse the water soluble character, the more sili- cone adsorption on the walls as well as on the fabric. As to the fabric, the more complicate the side chain, the more silicone adsorption on the fabric which was contrary to the adsorption on the walls. The more homogeneous distribution of silicone with amino functional group, the smaller the emulsion particle size, the easier contract with hydroxyl, carboxyl group, the more adsorption on the fabric.