Polymer Composite Optical Materials

高分子复合光学材料

• 批准号: 9503626
• 负责人: Warren Ford
• 金额: $ 28.8万
• 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: 1995
• 资助国家: 美国
• 起止时间: 1995-07-01 至 1998-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9503626&HistoricalAwards=false
• 关键词: Polymer; Composite; Optical; Materials

9503626 Ford Polymers filled with glass fibers and silica particles have many commercial applications due to increased hardness, abrasion resistance, tensile modulus, compressive strength, and heat distortion temperature, and to a lower coefficient of thermal expansion. The silica fibers or particles are irregularly dispersed and agglomerated, and the fibers may be oriented by shear. Nothing is known yet about how three- dimensional order of dispersed silica influences the mechanical properties of a composite. We have synthesized the first composites having the dispersed phase ordered as colloidal crystals. During the next grant period we will (1) characterize the crystal structures of the colloidal silica-polymer composites more completely to answer a number of puzzling aspects of the optical diffraction of the films, (2) prepare optical diffraction filters having smaller dispersed particles and a wider range of diffraction wavelengths, (3) prepare tunable filters using elastomeric matrices, (4) prepare blends of colloidal crystals of polystyrene latexes in acrylic matrices as diffraction filters, (5) extend our studies of the optical properties of the colloidal crystalline films to thermal and mechanical properties, (6) characterize the silica-PMMA composites by solid state NMR spectroscopy, and (7) synthesize a new family of colloidal crystalline dispersions in which derivatives of C60 are trapped in polystyrene and and PMMA latexes. %%% This research could lead to the development of several types of novel optical filters and improved elastomers. ***

填充有玻璃纤维和二氧化硅颗粒的福特聚合物由于增加的硬度、耐磨性、拉伸模量、压缩强度和热变形温度以及较低的热膨胀系数而具有许多商业应用。 二氧化硅纤维或颗粒不规则地分散和聚集，并且纤维可以通过剪切取向。 关于分散二氧化硅的三维有序性如何影响复合材料的机械性能，目前还不清楚。 我们已经合成了第一个复合材料的分散相有序的胶体晶体。 在下一个资助期内，我们将（1）更全面地表征胶态二氧化硅-聚合物复合物的晶体结构，以回答膜的光学衍射的许多令人困惑的方面，（2）制备具有更小分散颗粒和更宽衍射波长范围的光学衍射滤波器，（3）使用弹性体基质制备可调谐滤波器，（4）制备聚苯乙烯胶乳的胶体晶体在丙烯酸基质中的共混物作为衍射滤光片，（5）将我们对胶体晶体膜的光学性质的研究扩展到热性质和机械性质，（6）用固态NMR光谱表征二氧化硅-PMMA复合材料，和（7）合成一类新的胶体结晶分散体，其中C60的衍生物被捕获在聚苯乙烯和PMMA胶乳中。 这项研究可能会导致几种类型的新型滤光器和改进的弹性体的发展。 ***