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Amphiphilic macromolecular emulsifier with switchable surface activity and use thereof in preparation of polymer latex
Amphiphilic macromolecular emulsifier with switchable surface activity and use thereof in preparation of polymer latex
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机译:具有可转换表面活性的两亲性高分子乳化剂及其在制备聚合物胶乳中的应用
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摘要
A macromolecular emulsifier with switchable surface activity, and use thereof for preparation of polymer latex is disclosed. By using the macromolecular emulsifier with switchable surface activity as an emulsifier, a reversibly coagulable and re-dispersible polymer latex can be prepared by emulsion polymerization. The polymer latex can achieve the coagulation of latex particles by heating and aerating with nitrogen, air, inert gas and/or adding a small amount of alkali solution; the coagulated latex particles can be restored and re-dispersed into stable latex by aerating with carbon dioxide and/or adding a small amount of acid solution. The coagulation and re-dispersion process is reversible and is easy to control.
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