Synthesis and Characterization of Melt Stable Polyacrylonitrile Copolymers and Blends

熔体稳定聚丙烯腈共聚物和共混物的合成和表征

• 批准号: 1006630
• 负责人: James McGrath
• 金额: $ 36万
• 依托单位: Virginia Polytechnic Institute and State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-05-01 至 2014-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1006630&HistoricalAwards=false
• 关键词: Synthesis; Characterization; Melt; Stable; Polyacrylonitrile

TECHNICAL SUMMARYThe research will provide the scientific and technological foundation for the synthesis, characterization, processing, and performance verification of melt-stable, polyacrylonitrile (PAN) copolymers and blends with poly(ethylene oxide) (PEO or PEG). These systems will provide for the first time valuable fibers, films, and molded objects that will have the solvent-free, environmental attractiveness afforded by melt fabrication. The project will largely focus on classical free radical statistical copolymerization of acrylonitrile with ion-containing comonomers and with methacrylate functional poly(ethylene oxide) macromonomer oligomers. They can be efficiently prepared in high molecular weight in DMSO. The rheological properties of the copolymers and blends will be measured as a function of temperature, time, and shear rate to confirm the thermoplastic nature of these systems and to determine compositional limits. NON-TECHNICAL SUMMARYThis award is based upon the growing need for sustainable, environmentally attractive, advanced macromolecular materials systems for high performance film and fiber applications ranging from energy to packaging materials and wastewater purification systems and polymer matrix carbon composites -- the latter of interest for aerospace, transportation, and windmill power. The first priority will be to investigate systems that are melt-processable and permit very low gas permeabilities and melt-spun acrylic fibers. Such materials would open broad new vistas for textile synthesis and production, which is currently not practiced in the Unites States. A major feature will involve interactions with minority women professors and students at Fisk University and at the University of South Carolina Upstate. The goal will be to develop talented diverse scientists; summer internships will be provided involving faculty and students from HBCUs and 4-year schools to broaden students' perspectives well beyond their own research projects.

技术总结该研究将为熔融稳定，聚丙烯硝基烯（PAN）共聚物以及与聚（氧化乙烷）（PEO或PEG）的合成，表征，加工和性能验证提供科学和技术基础。 这些系统将首次提供有价值的纤维，膜和模制物体，这些纤维，膜和模制物体将具有熔体制造提供的无溶剂，环境吸引力。 该项目将在很大程度上集中在丙烯腈与含离子的联合体以及甲基丙烯酸酯功能性聚（乙烷氧化物）宏观工位寡聚的经典自由基统计共聚。 它们可以在DMSO中有效制备在高分子重量中。 共聚物和混合物的流变特性将作为温度，时间和剪切速率的函数测量，以确认这些系统的热塑性性质并确定组成极限。 非技术摘要这一奖项是基于对可持续性，环保，先进的大分子材料系统的日益增长的需求，用于高性能膜和纤维应用，从能量到包装材料以及废水纯化系统以及聚合物基质碳复合材料 - 后者对航空航天，运输和风机的兴趣。 首要任务是研究可融化的系统，并允许气体渗透率非常低和熔融型丙烯酸纤维。 这种材料将为纺织品合成和生产开放广泛的新远景，目前在团结国家中尚未实行。一个主要功能将涉及与菲斯克大学和南卡罗来纳大学北卡罗来纳大学的少数族裔女教授和学生的互动。 目标是发展有才华的科学家；将提供暑期实习，包括HBCUS和4年学校的教职员工和学生，以扩大学生的观点，远远超出了自己的研究项目。