Preparation of Poly(acrylonitrile/ethyl acrylate)Colored Latex Particles and Their Printing Properties
In view of the problem that the color nano-latex particles prepared by the copolymerization method have poor color strength,and it is difficult to achieve deep and intensive dyeing of fabrics,this study first screened out the combination of soft and hard monomers with better solubility to polymerizable anthraquinone dyes(AHAQ)by calculating the solubility parameters of commonly used polymeric monomers,and then prepared poly(acrylonitrile/ethyl acrylate)red nano-latex particles(PAEA)by semi-continuous emulsion polymerization.The structure and properties of latex particles were characterized by electronic universal materials testing machine and other instruments,and the effects of factors such as the proportion of hard and soft monomers,the amount of crosslinker divinylbenzene(DVB),the amount of AHAQ,the ratio of oil to water,and the concentration of initiator on the properties of latex particles were explored,and the printing effect of colored latex particles with different solid contents on cotton fabrics was studied.The results showed that the hard monomer acrylonitrile(AN)and the soft monomer ethyl acrylate(EA)had good solubility to the dye,and when the ratio of the two was 1∶1.5-1∶2,the obtained latex film had both strength and ductility.The dosage of dye increased from 0.5 wt％to 2.5 wt％,the oil-water ratio increased from 1∶8 to 1∶4,and the conversion rates of monomer and dye showed a decreasing trend.When the solids content of latex is 30 wt％,the K/S value of the printed fabric is 10.34.Compared with the color latex particles prepared by the previous copolymerization method,the grafting rate of the dye in the latex particles increased significantly,which effectively improved the tinting strength of the color nano latex particles.
万方数据
维普
