Exploring the Fudamentals and Applications of Pickering Emulsions

建议编号：0625191主要调查者：戴，雷诺隶属关系：德克萨斯理工大学提案标题：探索皮克林乳剂的基本原理和应用智能优点：乳剂在自然和工业过程中普遍存在。传统的乳液使用有机表面活性剂或聚合物作为稳定剂。固体颗粒稳定乳状液(Pickering乳状液)虽然在原油回收、原油分离净化、废水处理等方面经常遇到，但近一个世纪以来，人们对这一现象知之甚少，一直被忽视。这项提案的重点是整合研究和教育，重点是探索皮克林乳剂的基本原理和应用。我们将用激光扫描共聚焦显微镜研究Pickering乳剂中固体微粒的自组装。特别是，将研究散体固体颗粒浓度、颗粒大小、颗粒润湿性和本体粘度对自组装的影响。此外，Pickering乳液还将作为一种新型模板，通过一步乳液聚合合成复合乳液。在拟议的工作中，将合成不同尺寸的复合胶乳以及含有不同尺寸和功能的无机粒子的复合胶乳。皮克林乳剂提供了一种新的胶体科学范式，拟议的工作预计将大大有助于更好地从根本上理解皮克林乳剂的形成。提出的新型一步Pickering乳液聚合为乳液聚合和复合胶乳材料的合成增加了一个新的维度。广泛影响：研究和教育之间的整合将被实施，以实现NSF的两个战略成果：人和想法。由于对教育的坚定承诺，PI将在现有课程中建立与研究相关的开放式项目，促进本科生和研究生研究，建立一个新的暑期计划，以扩大代表不足群体的参与，参加教师培训学院，并促进技术转让。皮克林乳剂涉及“粒子使用的创新概念”；拟议的工作预计将为广泛的实际应用提供新的机会。最后，但并非最不重要的是，该项目还提供了一个独特的机会，以满足我国对尖端研究的需求，并具有在21世纪进行重大扩展的潜力。

ABSTRACTProposal Number: 0625191Principal Investigator: Dai, LenoreAffiliation: Texas tech University Proposal Title: Exploring the Fundamentals and Applications of Pickering EmulsionsIntellectual Merit:Emulsions are ubiquitous in natural and industrial processes. Conventional emulsions use organic surfactants or polymers as stabilizers. Although solid particle stabilized emulsions (Pickering emulsions) are often encountered in the recovery of crude oil, oil separation and cleaning, and wastewater treatment, the phenomenon is poorly understood and has been neglected for nearly a century. This proposal focuses on integrating research and education centering on exploring the fundamentals and applications of Pickering emulsions. The self-assembly of solid microparticles in Pickering emulsion will be investigated using a laser scanning confocal microscope. In particular, the influence of bulk solid particle concentration, particle size, particle wettability, and bulk viscosity on self-assembly will be studied. In addition, Pickering emulsions will be used as a novel template to synthesize composite-latexes through a one-step emulsion polymerization. In the proposed work composite latexes of different sizes as well as composite-latexes containing inorganic particles with variable size and functionality will be synthesized. Pickering emulsions offer a new paradigm of colloidal science, and the proposed work is anticipated to contribute significantly to a better fundamental understanding of the formation of Pickering emulsions. The proposed novel one-step Pickering emulsion polymerization adds a new dimension to emulsion polymerization and the synthesis of composite-latex materials.Broader Impacts: The integration between research and education will be performed to meet the NSF's goals for two strategic outcomes: People and Ideas. With a strong commitment to education, the PI will establish research-related open-ended projects in existing courses, promote undergraduate and graduate research, establish a new summer program to broaden the participation of under-represented groups, participate in the Teacher Training Institute, and promote technology transfer. Pickering emulsions involve an "innovative concept for particle use"; the proposed work is anticipated to provide new opportunities for widespread practical applications. Last, but not least, this project also provides a unique opportunity to meet our nation's need for a cutting-edge research with the potential of significant expansion in the 21st century.