丙烯酰胺反相微乳液体系的制备、聚合及表征

Study on Inverse Microemulsion System of Acrylamide——Preparation, Polymerization and Characterization

本论文探讨了用Span80、Tween6 0为复合乳化剂 ,煤油为分散介质 ,制备丙烯酰胺的反相微乳液。并研究了所形成微乳液的微观结构和影响该微乳液体系聚合反应的因素。本文重点研究了复合乳化剂的配比 ,丙烯酰胺反相微乳液体系的形成机理 ,并通过紫外分光光度计 ,旋转粘度计等对微乳液体系可能形成的微观结构和特征进行了分析探讨。其后 ,采用氧化还原引发剂体系进行了微乳液聚合 ,并对聚丙稀酰胺的物理性能、化学结构。

An inverse microemulsion system of acrylamide, using Span80 and Tween60 as a complex emulsifier, was prepared and investigated. The possible microstructure and morphology of this system were studied and analyzed in accordance with the basic theory of microemulsion system. It was found that the optimal ratio of the complex emulsifier between Span80 and Tween60 is 0.47 (m/m). Under this ratio, the maximum content of aqueous solution of acrylamide in the system is 13.8% mass fraction. The UV-spectroscopy and Rotational Viscometer were employed to inspect the formation process of inverse microemulsion system. The polymerization of acrylamide, initiated by a redox system (NH 4 2S 2O 8-NaHSO 3)with different initiator concentration, was also studied under the different temperature and time. Finally, the polymer's physical parameters were characterized using Infrared Spectroscopy and Ubblodle Viscometer.