New Materials from Radical Chain Polymerizations

自由基链聚合新材料

• 批准号: 9812523
• 负责人: Warren Ford
• 金额: $ 25.2万
• 依托单位: Oklahoma State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-09-15 至 2001-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9812523&HistoricalAwards=false
• 关键词: New; Materials; Radical; Chain; Polymerizations

98 12523FordThe proposed research will create three new types of polymers having properties valuable for new optical and structural materials. The syntheses and the basic chemical and structural characterization of new materials will be carried out by chemistry graduate students who are preparing for careers in industry or in college/university teaching. Most of the optical and mechanical properties will be determined in the laboratories of collaborating physicists and materialsengineers. Acrylic polymer composites will be prepared containing colloidal spheres of silica or polystyrene ordered into crystal lattices with approximate dimensions of the wavelength of visible light. The composites will be narrow band rejection filters of visible and near infrared light and as model materials for deeper understanding of how the morphology affects the tensile properties. The PI's will also prepare radical chain polymers that incorporate C60, the most abundant Buckminsterfullerene, to produce films of C60 derivatives for investigation of the relation of the structures to the nonlinear optical properties. A major goal is to understand how the C60 is bonded into the polymer structures. With that understanding new polymers will be synthesized to determine how the optical properties depend on the pattern of substitution of the C60 structural units. Finally, vinyl monomers will be polymerized in oil-in-water microemulsions to produce nanoparticles consisting of one polymer chain and having molecular weights of 106 Da. %%%All of the proposed syntheses utilize readily available starting materials and radical chain polymerization, the method most common in manufacturing of polymeric materials. Thus new materials from this research having practical optical and mechanical properties should be practical to produce for widespread application. This research will create three new types of polymers and test their optical and mechanical properties for potential use in optical communication devices and in improved plastics.***

98 12523英尺拟议的研究将创造出三种新型聚合物，它们具有对新的光学和结构材料有价值的性能。新材料的合成以及基本的化学和结构表征将由准备在工业或大学教学中就业的化学研究生进行。大多数光学和机械性质将在合作的物理学家和材料工程师的实验室中确定。丙烯酸聚合物复合材料将被制备成含有二氧化硅或聚苯乙烯的胶体球体，排列成晶格，其波长与可见光的波长大致相同。该复合材料将作为可见光和近红外光的窄带抑制滤光片，并作为模型材料，以更深入地了解形态对拉伸性能的影响。PI还将制备含有最丰富的BuckminsterFullerene C60的自由基链聚合物，以制备C60衍生物的薄膜，用于研究结构与非线性光学性质的关系。一个主要目标是了解C60是如何结合到聚合物结构中的。在了解了这一点后，将合成新的聚合物，以确定光学性质如何取决于C60结构单元的取代模式。最后，乙烯基单体将在水包油型微乳液中聚合，得到由一条聚合链组成的纳米粒子，其相对分子质量为106Da。%所有建议的合成都使用容易获得的原料和自由基链聚合，这是制造聚合物材料中最常见的方法。因此，从这项研究中获得的具有实际光学和机械性能的新材料应该是实际生产的，以便广泛应用。这项研究将创造三种新的聚合物类型，并测试它们的光学和机械性能，以潜在地用于光通信设备和改进的塑料。