“Solid Emulsion”: Gas‐Switchable Latex System with Reversible Coagulability and Redispersibility
“Solid Emulsion”: Gas‐Switchable Latex System with Reversible Coagulability and Redispersibility
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DOI：
10.1002/adsu.201700051
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发表时间：
2017-06
影响因子：
7.1
通讯作者：
Tommy Fang;Zhengyi Wan;Meng Huo;Jinying Yuan
中科院分区：
文献类型：
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作者：
Tommy Fang;Zhengyi Wan;Meng Huo;Jinying Yuan
在乳液溶液和干粉之间可逆切换的能力可能为乳液相关行业提供重大的经济和环境效益，特别是在运输和处理乳胶含水量的能源消耗和成本的大幅降低方面。在这里，通过结合CO2响应聚合物表面活性剂和CO2响应引发剂，开发了一种具有高可逆性的多功能CO2/N2可切换乳胶体系。特别是，从乳胶到干粉的混凝性和再分散性回到溶液形式被系统地检查，显示最小的变化在回收乳胶粒径，分布，形态和ζ -电位的粉末样品新鲜干燥和在环境条件下储存三个月后。因此，这种具有长期储存稳定性和乳液共聚单体选择通用性的气体切换“固体乳液”体系可能会在工业上做出重大贡献和进步。
The ability to reversibly switch between latex solution and dried powder can potentially provide major economic and environmental benefits to emulsion related industries, especially in the substantial reduction of energy consumption and cost from the transportation and handling of latex water content. Here, a versatile CO2/N2‐switchable latex system with high reversibility is developed by combining a CO2‐responsive polymeric surfactant and a CO2‐responsive initiator. In particular, the coagulability from latexes to dried powder and redispersibility back to solution form are systematically examined, showing minimal changes in the recovered latex particle size, distribution, morphology, and ζ‐potential for powder samples both freshly dried and after three months storage under ambient conditions. Hence, such a gas‐switchable “solid emulsion” system with long‐term storage stability and versatility in emulsion copolymerization monomer selection can potentially make significant industrial contribution and advancement.