Control of the Wetting Behavior of Thin Polymeric Films on Inorganic Substrates

无机基材上聚合物薄膜润湿行为的控制

• 批准号: 0304803
• 负责人: Robert Weiss
• 金额: $ 33万
• 依托单位: University of Connecticut
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-06-01 至 2007-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0304803&HistoricalAwards=false
• 关键词: Control; Wetting; Behavior; Thin; Polymeric

This research examines the effect of ionomers on the dewetting of thin film coatings on inorganic substrates. Sulfonated and carboxylated polystyrene and carboxylated polysiloxane ionomers will be synthesized and spin-coated onto silicon disks. The thin films will be annealed at various temperatures above the glass transition temperature of the polymer and the dewetting kinetics will be measured by x-ray reflectivity, atomic force microscopy and optical microscopy. The interactions of the polymer films and model compounds with a silica surface will be measured using mid- and far-infrared reflectance-absorption spectroscopy. The dynamic viscoelastic properties of the polymers will be determined by rheology measurements. %%%The stability of polymeric coatings is critical for a wide variety of technologies, including electronics, biomaterials, smart materials, adhesives, tribology, lithography, and high performance composites. This research investigates the thermodynamic and dynamic origins of dewetting of polymer liquids from solid substrates and the information obtained may enable the use of thinner coatings, as well as coatings with tailored surface chemistry. The research will also train undergraduate and graduate students in polymer chemistry and engineering and surface and interfacial science.***

本研究考察了离子单体对无机基底上薄膜涂层脱湿的影响。磺化和羧基化聚苯乙烯和羧基化聚硅氧烷离聚体将被合成并自旋涂覆在硅盘上。薄膜将在高于聚合物玻璃化转变温度的不同温度下退火，并通过x射线反射率、原子力显微镜和光学显微镜测量脱湿动力学。聚合物薄膜和模型化合物与二氧化硅表面的相互作用将使用中、远红外反射吸收光谱进行测量。聚合物的动态粘弹性性能将通过流变学测量来确定。聚合物涂层的稳定性对各种技术至关重要，包括电子、生物材料、智能材料、粘合剂、摩擦学、光刻和高性能复合材料。本研究调查了聚合物液体从固体基材中脱湿的热力学和动力学起源，所获得的信息可能使更薄涂层的使用成为可能，以及具有定制表面化学的涂层。该研究还将培养高分子化学与工程、表面与界面科学方面的本科生和研究生