US-India Cooperative Research: Dispersion-Flocculation Phenomena in Colloidal Oxide Suspensions at Low Concentrations of Polymers

9605197 Somasundaran描述：该奖项授予美国-印度合作研究：低浓度聚合物的胶体氧化物悬浮液中的分散-絮凝现象。合作者是哥伦比亚大学化学工程系的P.Somasundaran博士和印度浦那塔塔研究、开发和设计中心的普拉迪普博士。这项研究将集中在低聚合物浓度组合用于氧化物矿物的絮凝。这一动机来自于目前一个关于氧化铁-氧化铝的项目获得的新结果，在该项目中，发现在低浓度的聚丙烯酸下，氧化铝可以有效地絮凝。研究人员将对聚合物-聚合物、颗粒-颗粒和聚合物-颗粒相互作用的基本机理进行研究，以达到本研究的目的，即建立统一的聚合物絮凝理论。从这项研究中获得的知识将有助于为一个具有工业重要性和技术挑战性的问题制定战略--一般情况下有选择地分离细颗粒，特别是氧化物悬浮液。范围：该项目支持两个著名实验室的开创性研究，以及具有互补专业知识和出色研究记录的科学家之间的研究。这两个国家的学生都将参与这项研究。该项目在一个具有高度科学兴趣和互惠互利的领域加强了国际合作。该项目达到了INT的目标。***

9605197 Somasundaran Description: This award is for the US-India Cooperative Research: Dispersion-Flocculation Phenomena in Colloidal Oxide Suspensions at Low Concentrations of Polymers. The collaborators are Dr. P. Somasundaran, Department of Chemical Engineering, Columbia University and Dr. Pradip of the Tata Research, Development & Design Centre, Pune, India. This research will focus on usage of combinations of low polymer concentrations for flocculation of oxide minerals. The motivation stems from novel results obtained from a current project on iron oxide-alumina where at low concentrations of polyacrylic acid, it was found that alumina can be effectively flocculated. The researchers will study the fundamental mechanisms of polymer-polymer, particle-particle and polymer-particle interactions in order reach the goal of this research which is to develop a unified theory of polymeric flocculation. The knowledge gained from this study will help develop strategies for an industrially important and technologically challenging problem--the selective separation of fine particulates in general and oxide suspensions in particular. Scope: This project supports pioneering research at two well regarded laboratories and between scientists with complementary expertise and excellent research track records. Students in both countries will be involved in the research. The project enhances international collaboration in an area of high scientific interest and mutual benefit. The project meets INT objectives. ***