十二烷基/羧基改性聚二甲基硅氧烷的合成、膜形貌及其应用性能研究

Synthesis,film morphology and application characteristics of dodecyl/carboxyl modified aminopropylpolysiloxane

通过氨基硅烷、十二烷基硅烷与D4的聚合反应制得了中间体氨基/十二烷基改性聚二甲基硅氧烷(RASO),利用RA-SO与马来酐的开环反应制得一种新型织物整理剂羧基/十二烷基改性聚二甲基硅氧烷(RCAS),并对其结构及膜形貌进行了表征。结果表明RCAS形成微观形态学非均一结构的硅膜,其膜形貌主要由不清晰的连续相与竖直的尖峰构成,在1μm2的扫描范围内,RCAS所形成的硅膜的均方粗糙度为0.583 nm,远远大于ASO-1硅膜的均方粗糙度(0.072 nm)。RCAS整理前后织物柔软性有了明显改变,虽然织物的柔软性仍不及ASO-1所整理的织物,但是织物的吸湿性明显提高,而且有效抑制了氨基硅整理织物时所引起的热泛黄性。

An intermediate, amino/dodecyl modified polysiloxane （RASO）, is firstly synthesized by copolymerization of octamethylcyclotetrasiloxane （D4） with aminosilane and dodecylsilane. Then a novel softener, dodecyl/carboxyl modified aminopropylpolysiloxane is prepared by the reaction of RASO and maleic anhydride. Chemical structure and film morphology are characterized. The results show that the film is inhomogeneous in micromorphology, which is composed of non-vivid continuous phase and amount of verticle spikes. In 1 μm^2 of scanning area, the average roughness of RCAS film is 0. 583 nm which is far bigger than that of the ASO-1 film（0.072 nm）. Comparing with the fabrics treated by different polysiloxanes the softeness of the fabrics treated by RCAS is worse than that of ASO-1. However, the fabrics treated by RCAS exhibits an excellent water absorbility and the yellowing due to the amino groups is greatly inhibited.