氨基硅油整理法在温敏纺织品制备中的应用

温敏纺织品作为智能纺织品的重要组成部分,可响应环境温度的变化而调节自身的性能,在调温调湿、抗浸储水、生物医用等领域具有良好的应用前景。然而,如何将温敏聚合物高效温和地接枝到纺织品上是温敏纺织品制备过程中的难题。介绍了一种简单易行、普适性强的接枝方法,采用氨基硅油整理法在织物表面引入高活性的反应基团氨基,再通过原子转移自由基聚合(ATRP)技术接枝温敏高分子链。经由氨基硅油整理的棉织物柔顺性提高,水洗稳定性良好,红外和接触角等实验结果均证明温敏性单体N-异丙基丙烯酰胺(NIPAAm)被成功接枝聚合到织物表面,且接枝率高达41.2%。所得织物具有良好的温敏性能,可通过改变温度实现织物表面亲/疏水性的可逆转变。

Study on amino silicon-finishing method for preparation of thermo-responsive textiles

Thermo-responsive textiles can adjust themselves by responding to the environment temperature，which is one of the most researched smart textiles. They have a promising future for thermal/moisture self-adjustment, water-storage and medicine control releasing etc. To prepare thermal-responsive textiles, polymers with the lower critical solution temperature (LCST) are normally grafted onto the fabric. However, it is difficult to graft thermal responsive polymers on textile materials due to lake of reactive sites on textile fibers such as cotton. In this study, the amino silicone finishing was used to introduce amino groups onto cotton fibers and to improve fabric softness. NIPAAm was then successfully grafted onto the cotton by atom transfer radical polymerization (ATRP), which was confirmed by the infrared and contact angle measurements. Prepared cotton-PNIPAAm has a great thermal responsive performance indicated by transitions between hydrophilic and hydrophobic surface reversibly at the LCST.