Synthesis of self-crosslinking soap-free emulsion with ketone and hydrazine to modify the properties of corrugated paper

Abstract

Functional acrylate polymer emulsions were prepared using soap-free emulsion polymerization technology. Minimum film-forming temperature and glass transition temperature of the synthesized polymers were measured. The polymerization process was optimized by single factor design in the experiment. The occurrence of unique self-crosslinking reaction improves the film-forming property. The water resistance and the mechanical strength of paper are increased at the same time. Furthermore, the electrical charge of the emulsion is significantly increased with the increasing amount of the crosslinking agent, which improves the stability of the emulsion. Emulsion particles and changes of paper surfaces were observed during the treatment process. The mechanisms of polymerization and surface modification were proposed on the basis of the experimental results.