Research Initiation Award Grant: Synthesize and Characterize of Disulfonated Poly(arylene ether sulfone-tetrachlorocyclotriphosphazene) Hybrid Copolymers

研究启动奖：二磺化聚（亚芳基醚砜-四氯环三磷腈）杂化共聚物的合成和表征

• 批准号: 1137573
• 负责人: Natalie Arnett
• 金额: $ 20万
• 依托单位: Fisk University
• 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 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1137573&HistoricalAwards=false
• 关键词: Research; Initiation; Award; Grant; Synthesize

Fisk University's Research Initiation Award entitled - Synthesize and Characterize of Disulfonated Poly(arylene ether sulfone-tetrachlorocyclotriphosphazene) Hybrid Copolymers - has the goal to synthesize disulfonated poly(arylene ether sulfone tetrachlorocyclotriphosphazene) (PAES-TCCP) hybrid copolymers as proton exchange membranes (PEM) for fuel cells. Polymer membranes created to date are insufficiently proton conductive to be useful for fuel cells. The project will combine the unique properties of hexachlorocyclotriphosphazene (HCCP) monomer with disulfonated poly(arylene ether sulfone) (PAES) copolymer to prepare novel hybrid polymers with increased hydrophilicity, high proton conductivity, thermal stability, and mechanical properties. However, harsh post sulfonation reactions typically reported to modify HCCP preformed polymers led to both irreproducible and crosslinked products. To overcome these limitations, a two-step method for preparing disulfonated linear PAES-TCCP hybrid copolymers is proposed. In the first step, hybrid monomers based on hexachlorocyclotriphosphazene and biphenols monomers will be prepared; the phenolic endgroups of the bisphenol monomers will serve as the reactive site for polymerization to overcome the steric hindrance associated with the HCCP monomer, thus increasing polymer molecular weight. Secondly, linear PAES-TCCP hybrid copolymers will be synthesized by direct copolymerization of the hybrid monomers with disulfonated 4, 4'-dichlorodiphenylsulfone (SDCDPS) and unsulfonated 4, 4'-dichlorodiphenylsulfone (DCDPS) monomers. Retention of the chlorides on HCCP prior to polymerization will allow post-modifications to be carried out along the polymer backbone, providing further reactive sites to subsequently incorporate various functional groups. The expected products will have improved proton conductivity and controlled cross-linking.This project involves undergraduate students from under-represented backgrounds in state-of-the-art polymer research at Fisk University. Students participate in all major aspects of the research, increasing their interest in polymer chemistry through hands-on experiences. Undergraduate research by Fisk students further prepares them to obtain M.S. or PhD degrees for careers in the polymer-related fields.

Fisk University's Research Initiation Award entitled - Synthesize and Characterize of Disulfonated Poly(arylene ether sulfone-tetrachlorocyclotriphosphazene) Hybrid Copolymers - has the goal to synthesize disulfonated poly(arylene ether sulfone tetrachlorocyclotriphosphazene) (PAES-TCCP) hybrid copolymers as proton exchange membranes （PEM）用于燃料电池。迄今为止创建的聚合物膜不足以对燃料电池有用。该项目将结合六氯环烷磷酸（HCCP）单体的独特性质与二硫聚（芳基苯乙烯醚磺基）（PAES）共聚物，以使新型杂交聚合物具有增加的杂种聚合物，并增加水文性，高质量电导率，热稳定性和机械性能。然而，通常据报道要修饰HCCP预先形成的聚合物的苛刻后硫化反应导致了不可重复的和交联的产物。为了克服这些局限性，提出了一种两步方法，用于制备二硫键PAES-TCCP杂交共聚物。第一步，将制备基于六氯环磷酸和双苯酚单体的混合单体。双酚单体的酚类端群将用作反应性位点的聚合，以克服与HCCP单体相关的空间障碍，从而增加聚合物分子量。其次，线性PAES-TCCP混合共聚物将通过与二硫二氯二苯基硫酮（SDCDPS）和未硫化的4，4'-二甲苯苯基硫酮（DCDPS）的杂种共聚物直接共聚。在聚合之前，将氯化物保留在HCCP上，将允许沿聚合物主链进行后修饰，从而提供进一步的反应性位点，以使随后合并各种功能组。预期的产品将改善质子电导率和控制的交联。该项目涉及来自Fisk University最先进的聚合物研究中代表性不足背景的本科生。 学生参与研究的所有主要方面，通过动手体验增加对聚合物化学的兴趣。 Fisk学生的本科研究进一步做好准备以获取M.S.或与聚合物相关领域中职业的PHD学位。