1.National Experimental Demonstration Center for Materials Science and Engineering, School of Materials Science and Engineering,Changzhou University,Changzhou 213164;
2.Nanjing Forestry University,Nanjing 210037;
3.Jiangsu Chenguang Paint Co.,Ltd., Changzhou 213154
Abstract: Terminal-hydroxyl siloxane was obtained with the ring-opening reaction of octamethylcyclotetrasiloxane under acidic condition.Different terminal functional groups of polysiloxane were prepared by changing the kinds of silane coupling agent.Silicone-containing styrene-acrylic emulsion with different terminal functional groups of polysiloxane,styrene and acrylate was prepared by the free radical copolymerization.The properties of styrene-acrylic emulsion modified by the different kinds and amounts of polysiloxane was also studied.The composition and properties of emulsion were characterized by fourier transform infrared spectroscopy,dynamic light scattering,contact angle,thermogravimetric analysis and scanning electron microscopy.Experimental results showed that the emulsion had narrow particle size distribution.The surface hydrophilicity and thermal stability were improved.Antibacterial experimental result showed that the emulsion had antibacterial properties.