染料/聚合物复合共聚物微球的制备

为制备出粒径均一、染料含量高的彩色共聚物微球,采用无皂乳液聚合法合成了阳离子聚合物微球聚(苯乙烯(St)-丙烯酸丁酯(BA)-对乙烯基苄基三甲基氯化铵(VBT)),利用活性染料分子与阳离子聚合物微球之间的静电引力和分子间作用力,制备了彩色共聚物微球。通过透射电子显微镜、纳米粒径电位分析仪和平衡透析法,探讨了染料用量和搅拌速度对彩色共聚物微球性能的影响。结果表明:彩色共聚物微球呈规则球形,表面光滑,粒径均一;随着染料用量的增加,彩色共聚物微球的粒径分布变窄,平均粒径减小,表面带的负电荷增加,Zeta电位的绝对值逐渐增大(均大于30 mV);随着搅拌速度的增加,彩色共聚物微球的粒径分布变窄,平均粒径减小,染料吸附量增大。

Preparation of reactive dye/polymer composite copolymer microspheres

In order to prepare colored composite microspheres with uniform particle size and high dye content, cationic polymer microspheres poly ( styrene ( St )-butyl acrylate ( BA )-vinylbenzyltrimethyl-ammonium chloride( VBT) ) were synthesized by soap-free emulsion polymerization. Colored microspheres were prepared by using the electrostatic attraction and intermolecular force between the reactive dye molecules and the cationic polymer microspheres. The influence of dye dosage and stirring speed on the properties of colored copolymer microspheres were investigated by transmission electron microscope, nano-particle size and Zeta potential analyzer and equilibrium dialysis technology. The results indicate that the colored copolymer microspheres are regularly spherical and have smooth surface. The negative charge of the surface, the absolute value of Zeta potentials ( greater than 30 mV) , and the dye content increase with increasing of the dye dosage although the particle size of the colored copolymer microspheres decreases. With the variation of the stirring speed, the particle size of the colored copolymer microspheres decreases, the size distribution becomes narrow and the adsorption amount of dye increases.