The Role of Peeling in Interfacial Engineering

剥离在界面工程中的作用

• 批准号: 1130739
• 负责人: Lawrence Bottomley
• 金额: $ 36.48万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-01 至 2015-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1130739&HistoricalAwards=false
• 关键词: Role; Peeling; Interfacial; Engineering

The research objective of this grant is to determine if the conformation of a single polymer molecule on a surface can be accurately determined using the scanning probe microscope. This objective will be achieved by synthesizing alternating block copolymers comprised of well-defined surface affinities and molecular structures, imaging these molecules adsorbed onto a variety of surfaces, and then using dynamic force spectroscopy to repeatedly adsorb and detach the molecule from each of these surfaces. Correlation of the forces required to detach the molecule from a given surface with its molecular composition and structure will enable identification of the three-dimensional polymer?s interfacial structure.If successful, this interdisciplinary collaborative effort will lead to a better understanding of how polymeric coatings interact with underlying surfaces and improved control over the interfacial properties of materials. Understanding the adsorption, desorption and conformation of polymers on substrates is extremely important in defining colloidal material interactions. Colloidal interactions are important in biomass conversion into biofuels, oil recovery, mining, food processing, papermaking, and water treatment. This interdisciplinary project involves students from under-represented groups and faculty from chemistry, chemical engineering and mechanical engineering working together to meet the research goals. Multiple undergraduate and graduate courses in the Schools of Chemistry & Biochemistry, Chemical & Biomolecular Engineering, and Mechanical Engineering at Georgia Tech will be enhanced.

这项资助的研究目标是确定是否可以使用扫描探针显微镜准确地确定表面上单个聚合物分子的构象。这一目标将通过合成由明确定义的表面亲和力和分子结构组成的交替嵌段共聚物来实现，成像这些分子吸附在各种表面上，然后使用动态力光谱重复地从这些表面上吸附和分离分子。将分子从给定表面分离所需的力与其分子组成和结构相关联，将使识别三维聚合物-S界面结构成为可能。如果成功，这种跨学科的合作努力将导致更好地理解聚合物涂层与下表面的相互作用，并改进对材料界面属性的控制。了解聚合物在基质上的吸附、解吸和构象对于确定胶体材料相互作用是极其重要的。胶体相互作用在生物质转化为生物燃料、石油开采、采矿、食品加工、造纸和水处理方面非常重要。这个跨学科项目涉及来自代表不足的群体的学生和化学、化学工程和机械工程的教师共同努力，以实现研究目标。佐治亚理工学院化学与生物化学、化学与生物分子工程和机械工程学院的多个本科生和研究生课程将得到加强。