Preparation of polyacrylate/nano-ZnO composite emulsion and its application on textile pigment printing

Nano-Zn O was modified by silane coupling agent vinyltriethoxysilane( A-151). Polyacrylate /nano-Zn O composite emulsion was prepared by in-situ polymerization,and was used for pigment printing.Nano-Zn O before and after modification were characterized by FT-IR and DLS. The composite emulsion was characterized by DLS and TEM. Effects of nano-Zn O feeding ways on the composite emulsion were studied. Particle size of modified nano-Zn O increased compared with unmodified nano-Zn O. Composite emulsion had a relatively uniform particle size of 190- 200 nm. Nano-Zn O feeding ways had little effect on particle size and its monodispersity of the composite latex but affected the particle size distribution.Gel rate of the composite emulsion was lower when nano-Zn O was added in the second stage of emulsion polymerization. Performance for printed fabric using the composite latex was basically the same as the fabric printed using commercial binder.