聚丙烯酸酯/罗丹明B复合乳胶的细乳液聚合制备及其应用

Preparation and application of polyacrylate/rhodamine B composite latex by miniemulsion polymerization

为提升罗丹明B在水中的分散稳定性,通过细乳液聚合制备了聚丙烯酸酯/罗丹明B复合乳胶,并对其性能进行了研究。借助粒径分析仪、透射电子扫描显微镜、X射线衍射仪、荧光光谱仪测试了聚丙烯酸酯/罗丹明B复合乳胶的粒径、Zeta电位、形态结构及荧光性能;采用刮印的方法将制备的聚丙烯酸酯/罗丹明B复合乳胶整理于棉织物,讨论了乳胶质量分数、黏合剂质量分数对棉织物荧光反射率的影响。结果表明,所制备的聚丙烯酸酯/罗丹明B复合乳胶平均粒径为86. 2 nm,Zeta电位为-54. 7 m V,分散稳定性较好,荧光性能增强;当乳胶质量分数为10%、黏合剂质量分数为20%时,整理后棉织物的K/S值和荧光反射率较高,织物的耐水洗色牢度达到4级,耐摩擦色牢度为3~4级。

In order to improve the stability of rhodamine B in water, polyacrylate/rhodamine B composite latex was prepared by miniemulsion polymerization and the property of polyacrylate/rhodamine B composite latex was also discussed. The particle size, Zeta potential, morphological structure and fluorescenct performance of rhodamine B solution and composite latex were tested by particle size analysis, transmission electron microscopy, X-ray diffractometry and fluorescence spectrometry, respectively. The influences of composite latex mass percent and binder mass percent on the fluorescent properties of cotton fabrics were discussed as application of polyacrylate/rhodamine B composite latex on the cotton fabrics by scraping. It is found that the average particle size and Zeta potential of polyacrylate/rhodamine B composite latex are 86.2 nm and -54.7 mV, respectively. The dispersion stability and fluorescent performance of composite latex are enhanced. The K/S values and fluorescent reflectance of cotton fabrics are higher, and the washing fastness and rubbing fastness reaches grade 4 and 3-4 under the condition of the mass percent of latex 10% and the binder mass percent of latex 20%, respectively.