I/UCRC: Collaborative Fundamental Research: Foaming and Frothing Behavior of Green Surfactants and Fine Particulate Systems

项目主任建议颗粒和表面活性剂系统中心（CPaSS）提案# 1230367 1230680 Moudgil和Somasundaran该提案寻求为位于佛罗里达大学（牵头单位）和哥伦比亚大学的颗粒和表面活性剂系统中心（CPaSS）提供资金。基础研究的资金申请由NSF批准的招标（NSF 11-570）授权。征集邀请I/UCRC提交支持行业定义的基础研究的提案。本计画将探讨绿色表面活性剂之发泡特性及微细粒子之存在对发泡及起泡行为之影响。该提案的主要目标是：1）了解绿色表面活性剂配方和表面改性细颗粒的发泡/起泡性能的物理化学方面; 2）研究液-气和固-液界面处表面活性剂膜的结构; 3）开发有效的发泡/起泡配方。实验将涉及泡沫/泡沫稳定性的宏观测量和泡沫液膜中绿色表面活性剂的分子组织的振动FTIR和拉曼）光谱研究。将采用一种新的FTIR光谱方法来获取不稳定气泡的光谱。采用耗散粒子动力学（DPD）方法对绿色表面活性剂体系进行了数值模拟。DPD建模将进行调整，以便于解释实验数据。本研究的结果将推进的基本理解的参数，管理的拮抗和协同效应的绿色表面活性剂配方和它们的混合物与改性的细颗粒的发泡性，起泡，和起泡的解决方案和悬浮液。对拟议的基础研究感兴趣的行业包括绿色表面活性剂生产商、矿物加工、石油、油漆和涂料行业、生化分离、化妆品、个人护理和家用产品行业，以及对环境修复感兴趣的行业。具体地说，全面了解绿色表面活性剂的泡沫稳定性将导致开发新的配方，用于个人护理和化妆品产品中的应用，而关于细颗粒与绿色表面活性剂的相互作用的知识将导致开发具有成本效益的发泡、起泡和消泡系统。

Program Director's Recommendation Center for Particulate and Surfactant Systems (CPaSS) Proposal # 1230367 & 1230680 Moudgil and Somasundaran This proposal seeks funding for the Center for Partculate and Surfactant Systems (CPaSS) located at the University of Florida (lead site) and Columbia University. Funding Requests for Fundamental Research are authorized by an NSF approved solicitation, NSF 11-570. The solicitation invites I/UCRCs to submit proposals for support of industry-defined fundamental research. This proposal will investigate foaming properties of green surfactants and the effects of presence of fine particles on foaming and frothing behavior. The primary goals of the proposal are 1)to understand physico-chemical aspects of the foaming/defoaming properties of green surfactant formulations and surface modified fine particles; 2)study the structure of surfactant films at the liquid-gas and solid-liquid interfaces; and 3)to develop efficient foaming/defoaming formulations. Experiments will involve the macroscopic measurements of foam/froth stability and a vibrational FTIR and Raman) spectroscopic study of the molecular organization of green surfactants in the liquid films of foams. A new FTIR spectroscopic method will be employed to acquire spectra of unstable bubbles. Dissipative Particle Dynamics (DPD) computational simulation will be used to simulate the green surfactant systems. The DPD modeling will be adapted to facilitate interpretation of experimental data. Results of this study will advance the fundamental understanding of the parameters that govern the antagonistic and synergistic effects of green surfactant formulations and their mixtures with modified fine particles on the foamability, frothing, and defoaming of the solutions and suspensions. The industries interested in the proposed fundamental studies include green surfactant producers, mineral processing, petroleum, paints and coatings industries, biochemical separation, cosmetics, personal care, and household products industries, as well as those interested in the environmental remediation. Specifically, a comprehensive understanding of the foam stability of green surfactants will lead to the development of new formulas for their applications in personal care and cosmetics products, while the knowledge about the fine particles interactions with green surfactants will lead to the development of cost effective foaming, frothing, and de-foaming systems.