RUI: Thiol-ene/yne Poly(ionic liquid) Networks for Separation and Electroactive Technologies

RUI：用于分离和电活性技术的硫醇-烯/炔聚（离子液体）网络

• 批准号: 1708632
• 负责人: Kevin Miller
• 金额: $ 23.39万
• 依托单位: Murray State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-07-01 至 2021-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1708632&HistoricalAwards=false
• 关键词: RUI; Thiol; ene; yne; Poly

NON-TECHNICAL SUMMARY:This RUI award supports fundamental research at Murray State University (MSU) in the area of electroactive materials while enhancing the education and training of undergraduate and high school students. The PIs will utilize a relatively novel, cost-effective, rapid-processing approach to prepare a library of polymers containing electrical charges with tunable thermal, mechanical, and conductive properties. Such charge-containing polymers have been implemented in a number of societally important applications, including batteries, fuel cells, power plant flue-gas separations, and pharmaceutical materials. From the polymer-property relationships established as a result of this work, the principal investigators (PIs) will explore the applicability of these new materials in carbon dioxide separation/capture, ion-sensing devices, and in the formation of electroactive fibers. The challenging work proposed here will be performed primarily by a team of undergraduate students from the rural counties of far-western Kentucky and surrounding communities with participation also of local high school students. Student participants will receive a rewarding, cutting-edge research experience that will deepen their understanding of and appreciation for scientific research, thus better preparing them for STEM-related majors, careers and/or pre-professional school. In addition to the hands-on laboratory training and education that these students will receive, the PIs will explore how the techniques/data acquired from this proposal will be used to develop new laboratory experiments to supplement current course offerings in organic, analytical, and polymer chemistry,and will further enhance the new Polymer and Materials Science degree track offered by the Department of Chemistry at MSU. TECHNICAL SUMMARY: This RUI award focuses on the development of a new class of poly(ionic liquid) (PIL) materials utilizing thiol-ene/yne click-photopolymerization with a strong focus on how changes in monomer structure and stoichiometry affect the thermal, mechanical, and conductive properties of the resulting PIL networks. The underlying hypothesis of this project is that thiol-ene/yne photopolymerization represents a significant advancement in the formation of solventless, one-part, homogeneous PIL networks due to the rapid and robust nature of the chemistry and the variability that exists with careful modification and selection of monomers. Specifically, fundamental structure-activity relationships will be established by varying the cation, anion, and thiol structures of the starting ionic liquid monomers and analyzing material properties such as glass transition temperature, thermal stability, crosslink density and ionic conductivity. Additionally, FTIR experiments will be conducted in order to explore how structural changes affect polymerization kinetics, as well as dielectric relaxation spectroscopy to elucidate the roles that chain dynamics and ion mobility play on the conductivities of the networks. Once fundamental relationships and kinetics are established, the PIs will explore the potential impact of these thiol-ene/yne PIL materials on a variety of important applications, including carbon dioxide separation/capture, as microchip electrophoresis devices for support of electro-osmotic flow, as membranes in ion-selective electrodes,and as electroactive fibers from electrospinning. The award will support a large number of undergraduate STEM students from the far-western Kentucky region and several local high school students, thereby expanding the educational impact and outreach of the university and department while enhancing the ability of the participating students to pursue a STEM-related career. Synthetic approaches, materials analyses and applications will provide student participants with rewarding research experiences, all while generating results that will be disseminated in internationally recognized, peer-reviewed journals and presented at professional meetings.

非技术摘要：该RUI奖支持默里州立大学（MSU）在电动材料领域的基础研究，同时增强了本科和高中生的教育和培训。 PIS将利用一种相对新颖的，具有成本效益的快速加工方法来准备包含具有可调的热，机械和导电性能的电荷的聚合物库。 这种含电荷的聚合物已在许多社会重要的应用中实施，包括电池，燃料电池，发电厂的烟气间隔和药物材料。从这项工作的结果中，主要研究人员（PIS）将探索这些新材料在二氧化碳分离/捕获，离子感应器件以及形成电活性纤维中的适用性。这里提出的具有挑战性的工作将主要由肯塔基州乡村县及其周边社区的一组本科生团队以及当地高中生的参与。学生参与者将获得有意义的尖端研究经验，将加深对科学研究的理解和欣赏，从而更好地为与STEM相关的专业，职业和/或专业前学校做好准备。除了这些学生将获得的动手实验室培训和教育外，PI还将探讨如何使用该建议获得的技术/数据来开发新的实验室实验，以补充当前的有机，分析和聚合物化学方面的课程，并将进一步增强新的聚合物和材料科学学位轨道，由新的聚合物和材料科学学位赛道提供了化学部在MSU Atsu Atsu的新聚合物和材料。技术摘要：该RUI奖的重点是利用硫醇烯/YNE点击聚糖化的新型聚（离子液体）（PIL）材料的开发，强烈关注单体结构和化学计量的变化如何影响最终的PIL网络的热，机械和导电性能。该项目的基本假设是，由于化学性质的快速和稳健性，硫醇 - 烯/YNE光聚合化代表了在无溶剂，一部分，均质的PIL网络形成方面的显着进步，并且由于仔细修改和选择了单位物质，因此化学的快速和稳健性。具体而言，将通过改变起始离子液体单体的阳离子，阴离子和硫醇结构并分析材料特性，例如玻璃过渡温度，热稳定性，交联密度和离子电导率等材料特性来建立基本的结构关系。 此外，将进行FTIR实验，以探讨结构变化如何影响聚合动力学以及介电弛豫光谱，以阐明链动力学和离子迁移率在网络电导率上发挥作用的作用。一旦建立了基本关系和动力学，PIS将探索这些硫醇 - 烯/YNE PIL材料对各种重要应用的潜在影响，包括二氧化碳分离/捕获，作为微芯片电泳设备，以支持电渗透流动的电泳，作为电动电动电极中的膜和电动电极中的膜。该奖项将支持来自肯塔基州遥远地区和几名当地高中生的大量本科生的STEM学生，从而扩大了大学和系的教育影响和宣传，同时增强了参与学生从事与STEM相关的职业的能力。合成方法，材料分析和应用将为学生参与者提供奖励的研究经验，同时产生的结果将在国际认可的，经过同行评审的期刊中传播，并在专业会议上介绍。

项目成果

Influence of counteranion and humidity on the thermal, mechanical and conductive properties of covalently crosslinked ionenes

• DOI: 10.1016/j.polymer.2021.123641
• 发表时间: 2021-04
• 期刊: Polymer
• 影响因子: 4.6
• 作者: Nicholas C Bontrager;S. Radomski;Samantha P. Daymon;R. Johnson;K. Miller

Designing Ionic Liquid-Derived Polymer Composites from Poly(Ionic Liquid)–Ionene Semi-interpenetrating Networks

• DOI: 10.1021/acsapm.1c00080
• 发表时间: 2021-03
• 期刊: ACS Applied Polymer Materials
• 影响因子: 5
• 作者: Kathryn E. O'Harra;George M. Timmermann;J. Bara;K. Miller