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| 正丁胺改性锂皂石制备ASA Pickering乳液及其施胶性能的研究 |
| Preparation of ASA Emulsions with Butylamine Modified Laponite and Its Sizing Performance |
| 收稿日期： |
| DOI：10.11980/j.issn.0254-508X.2011.10.001 |
| 关键词: ASA 锂皂石 正丁胺 乳化 Pickering乳液 施胶 |
| Key Words:ASA Laponite butylamine emulsification Pickering emulsion sizing |
| 基金项目:本课题为国家自然科学基金资助项目(20976099)和山东省自然科学基金资助项目（ZR2010CM008）。 |
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| 摘要:固体微粒稳定的乳液可以避免表面活性剂的不利影响。以纳米尺寸的锂皂石颗粒为乳化剂，以正丁胺为锂皂石的改性剂，制备了稳定的ASA乳液，并对其施胶性能、水解稳定性进行了研究。结果表明，当水相pH值为6，锂皂石对ASA用量为1.5%，正丁胺对锂皂石用量为2%时，利用改性锂皂石可以制备稳定的ASA乳液。所制备的ASA乳液可以产生良好的施胶效果，但其水解稳定性较差。铝盐的加入可以显著提高ASA乳液的施胶性能，而且在高铝盐添加量下，即使不使用助留剂，ASA乳液也能产生很好的施胶效果。 |
| 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. |
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