Preparation of epoxy-acrylate copolymerano-silica via Pickering emulsion polymerization and its application as printing binder

摘要

Graphical abstractDisplay OmittedHighlights•Fabrication of epoxy-acrylate copolymerano-silica latex via Pickering emulsion polymerization stabilized by silica sol.•Study on performance and formation mechanism of epoxy-acrylate copolymerano-silica latex.•The fabricated epoxy-acrylate copolymerano-silica latex was used in printing fabric as binder.AbstractThis paper presents a facile and efficient synthesis method to fabricate epoxy-acrylate copolymerano-silica latex via Pickering emulsion polymerization stabilized by silica sol. The effects of solid contents, silica concentration and polymerization time on emulsion polymerization were studied. The core-shell epoxy-acrylate copolymerano-silica was obtained with average diameter 690 nm, was observed by Transmission Electron Microscopy (TEM) and Dynamic Light Scattering (DLS). The formation mechanism of epoxy-acrylate copolymerano-silica emulsion polymerization was proposed through observing the morphology of latex particles at different polymerization time. Fourier Transformation Infrared (FT-IR) and Thermogravimetric Analysis (TGA) were used to study structure and thermostability of the composites. Morphology of the latex film was characterized by Scanning Electron Microscope (SEM). The results indicated that nano-silica particles existed in the composite emulsion and could improve the thermal stability of the film. The epoxy-acrylate copolymerano-silica latex was used as binder applied to cotton fabric for pigment printing. The application results demonstrated that Pickering emulsion stabilized by silica sol has good effects in the pigment printing binder without surfactant. Compared with commodity binder, the resistance to wet rubbing fastness and soaping fastness were improved half grade.