CAREER: SusChEM: Synthesis and Characterization of Disulfonated Poly(arylene ether sulfone 2,4,6-Trichloro-1,3,5-triazine) Hybrid Copolymers

职业：SusChEM：二磺化聚（亚芳基醚砜 2,4,6-三氯-1,3,5-三嗪）杂化共聚物的合成和表征

• 批准号: 2006757
• 负责人: Natalie Arnett
• 金额: $ 5.4万
• 依托单位: Florida Agricultural and Mechanical University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-11-07 至 2021-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2006757&HistoricalAwards=false
• 关键词: CAREER; SusChEM; Synthesis; Characterization; Disulfonated

NON-TECHNICAL:The objective of this CAREER project is to develop novel membrane materials for fuel cell applications and integrate this research into polymer education through appropriate courses and laboratory experiences. The research and education plan for this project will be achieved by: 1) Designing and preparing new fuel cell membranes for transport of electric charges; 2) Evaluating the properties and performance of the novel materials; 3) Modifying the materials to improve their properties; and 4) Merging polymer chemistry with general chemistry concepts by designing an "Introduction to Polymer Chemistry: General Chemistry Concepts" lecture and lab course for freshman students. The proposed research significantly enhances Fisk University's current and future research capabilities in polymer science through the introduction of this course that is deeply imbedded in the research objectives of this proposal, but simple enough to arouse student's interest and learning. Furthermore, the proposed two-semester introductory polymer course/inquiry-based lab experience, which is a student-selected alternative to traditional General Chemistry, will facilitate the enhancement of learning and research skills for undergraduate students. Introduction of authentic research beginning in the freshman year should also increase the retention of undergraduates (including underrepresented minorities) in STEM (science/technology/engineering/mathematics) and increase the pipeline of underrepresented talent for STEM careers.TECHNICAL:The objective of the proposed research is to synthesize hybrid copolymers of disulfonated poly(arylene ether sulfone)s (PAESs) by incorporating a post-modifiable unit, 2,4,6-trichloro-1,3,5-triazine (TT), into the polymer backbone. The significance of this approach is that the properties of the proton exchange membrane for fuel cells could be engineered for precisely tailored performance by tuning the microstructure of the copolymer backbone using varying and distinct structural/functional features. The disulfonated poly(arylene ether sulfone- 2,4,6-Trichloro-1,3,5-triazine) (PAES-TT) hybrid copolymers will be prepared to form linear, high molecular-weight materials after optimizing the required synthetic steps. Subsequently, PAES-TT membranes will be prepared and characterized to evaluate their structure-property relationships and performance in proton-exchange-membrane fuel cell applications. The educational component of this proposal is centered on developing an "Introduction to Polymer Chemistry: General Chemistry Concepts" lecture and lab course for freshman students as a means to incorporate student research experiences into the regular academic-year curriculum. Exposure of students to research, mentoring of students, broadening participation of underrepresented groups in science, and increasing the pipeline of underrepresented talent for STEM careers are other major components of the broader impacts of this project.

非技术性：该职业项目的目标是开发用于燃料电池应用的新型膜材料，并通过适当的课程和实验室经验将该研究整合到聚合物教育中。该项目的研究和教育计划将通过以下方式实现： 1）设计和制备用于电荷传输的新型燃料电池膜； 2）评价新型材料的特性和性能； 3）对材料进行改性，提高其性能； 4) 通过为新生设计“高分子化学概论：一般化学概念”讲座和实验课程，将高分子化学与一般化学概念相结合。拟议的研究通过引入这门课程，显着增强了菲斯克大学当前和未来在聚合物科学方面的研究能力，该课程深深植根于该提案的研究目标，但又足够简单，足以引起学生的兴趣和学习。 此外，拟议的两个学期的介绍性聚合物课程/基于探究的实验室体验是学生选择的传统普通化学的替代方案，将有助于提高本科生的学习和研究技能。从大一开始引入真实的研究还应该增加本科生（包括代表性不足的少数群体）在 STEM（科学/技术/工程/数学）中的保留率，并增加 STEM 职业中代表性不足的人才的输送渠道。 技术：拟议的目标研究是通过结合后改性单元来合成二磺化聚（亚芳基醚砜）（PAES）的杂化共聚物， 2,4,6-三氯-1,3,5-三嗪（TT）进入聚合物主链。 这种方法的意义在于，通过使用不同的和不同的结构/功能特征调整共聚物主链的微观结构，可以对燃料电池的质子交换膜的性能进行设计，以实现精确定制的性能。 在优化所需的合成步骤后，将制备二磺化聚（亚芳基醚砜-2,4,6-三氯-1,3,5-三嗪）（PAES-TT）杂化共聚物，形成线性高分子量材料。 随后，将制备并表征 PAES-TT 膜，以评估其在质子交换膜燃料电池应用中的结构-性能关系和性能。 该提案的教育部分集中于为新生开发“高分子化学概论：一般化学概念”讲座和实验课程，作为将学生研究经验纳入常规学年课程的一种手段。 让学生接触研究、指导学生、扩大代表性不足群体对科学的参与，以及增加代表性不足的人才进入 STEM 职业的渠道是该项目产生更广泛影响的其他主要组成部分。

项目成果

Solvent induced effect on morphology and properties of disulfonated polyarylene ether sulfone block copolymer membranes for PEMFC applications

溶剂对 PEMFC 应用中二磺化聚亚芳基醚砜嵌段共聚物膜形态和性能的影响

• DOI: 10.1016/j.polymer.2022.125626
• 发表时间: 2022-12-01
• 期刊: Polymer
• 影响因子: 4.6
• 作者: Natalie Y. Arnett;Sanjay Kumar Devendhar Singh;D'Andra Moxey;Samaiyah K.A. Mason;R. Sweat;Emily Plunket;R. Moore
• 通讯作者: R. Moore