| Abstract:Solid particles stabilized emulsions can avoid detrimental effects of surfactant. In this paper, ASA emulsions were prepared using nano-size Laponite particles, which were modified by n-butylamine, as emulsifier. The sizing performance and hydrolysis stability of the prepared emulsions were investigated. The results showed that stable ASA emulsion is obtained as the pH of aqueous phase, Laponite to ASA mass fraction, butylamine to Laponite mass fraction are 6.0, 1.5% and 2.0%, respectively. The ASA emulsion shows good sizing performance but low hydrolysis stability. The addition of alum remarkably enhances the sizing efficiency of the ASA emulsion, and with high amount of alum the ASA emulsion can develop a rather high sizing degree for paper even in absence of retention aid. |
