Abstract:

Nano-ZnO was modified by silane coupling agent vinyltriethoxysilane (A-151). Polyacrylate/nano-ZnO composite emulsion was prepared by in-situ polymerization, and was used for pigment printing. Nano-ZnO before and after modification were characterized by FT-IR and DLS. The composite emulsion was characterized by DLS and TEM. Effects of nano-ZnO feeding ways on the composite emulsion were studied. Particle size of modified nano-ZnO increased compared with unmodified nano-ZnO. Composite emulsion had a relatively uniform particle size of 190~200nm. Nano-ZnO 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-ZnO 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.

Key words: composite emulsion, polyacrylate, nano-ZnO, pigment printing binding agentt