CAREER: Processing Intrinsically Conductive Polymers for Fibers via Side-by-Side Spinning

职业：通过并列纺丝加工本质导电聚合物纤维

• 批准号: 2145468
• 负责人: Hang Liu
• 金额: $ 52.86万
• 依托单位: Washington State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-03-15 至 2027-02-28
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2145468&HistoricalAwards=false
• 关键词: CAREER; Processing; Intrinsically; Conductive; Polymers; CAREER; Processing; Intrinsically; Conductive; Polymers

Intrinsically conductive polymers (ICP) are a group of organic polymers whose chemical bonds on the molecular backbone allow conduction of electricity. Their pendant groups also allow chemical modifications for special functions, so ICPs have shown potential for use in smart textiles, which have embedded electronic circuitry that enables them to interact with the wearer and respond to environmental stimuli. However, the rigid molecular structure of ICPs limits their processability into flexible fibers for textile fabrication. This Faculty Early Career Development (CAREER) grant supports research into a new wet-spinning technology to manufacture flexible conductive fibers via side-by-side co-spinning of an ICP with a conventional polymer. The project will utilize both experimental and theoretical methods to investigate the side-by-side fiber formation process and evaluate its influence on fiber properties. The research outcomes should help to control the functional fiber manufacturing process, and allow the fibers to be used to construct sensors for smart wearables, which might find broad applications in healthcare, the military, and sports. Curriculum development and outreach activities will be integrated with research to involve K-12 and college students, especially those from groups underrepresented in STEM, to cultivate their interest in textile science/engineering, and to strengthen the workforce pipeline for the textile industry, in order to improve American competitiveness in the field. The goal of the project is to develop a fundamental understanding of the process-structure-property relationships of ICP side-by-side wet spinning, especially the interactions at the interface of the ICP with the spinnable conventional polymer, including the complex fluid interaction kinetics under various spinning conditions. Different types of side-by-side spinnerets will be designed, and the effects of the spinneret geometry on fiber formation will be studied. The influence of polymer solution properties and spinning control parameters on the side-by-side fibers' mechanical, electrical, and sensing properties will also be investigated. Computational fluid dynamics modeling will be used to simulate the hydrodynamics of the solutions inside the spinneret and in the coagulation bath during wet spinning, in order to simplify and optimize the experimental design. The fundamental process-structure-property relationships obtained could be applicable to multiple polymer solution manufacturing techniques, including wet spinning, electrospinning, direct ink writing 3D printing, and microfluid spinning.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

本质导电聚合物（ICP）是一组有机聚合物，其化学键在分子骨架上允许传导电力。他们的吊坠组还允许对特殊功能进行化学修改，因此ICP显示了在智能纺织品中使用的潜力，这些纺织品已经嵌入了电子电路，使它们能够与佩戴者相互作用并响应环境刺激。但是，ICPS的刚性分子结构将其加工性限制为用于纺织品制造的柔性纤维。这项教师的早期职业发展（职业）赠款支持对新型湿式技术的研究，以通过与常规聚合物的ICP并排共同旋转来制造灵活的导电纤维。该项目将利用实验和理论方法来研究并排的纤维形成过程，并评估其对纤维性能的影响。研究结果应有助于控制功能性纤维制造过程，并允许将纤维用于构造智能可穿戴设备的传感器，这可能会在医疗保健，军事和运动中找到广泛的应用。课程开发和外展活动将与研究集成，以涉及K-12和大学生，尤其是来自STEM中代表性不足的团体的学生，以培养他们对纺织品科学/工程的兴趣，并加强纺织业行业的劳动力管道，以提高该领域的美国竞争力。 该项目的目的是对ICP并排湿式旋转的过程结构 - 特性关系进行基本了解，尤其是ICP接口与可旋转的常规聚合物的相互作用，包括在各种旋转条件下的复杂流体相互作用动力学。将设计不同类型的并排旋转植物，并将研究微旋转几何形状对纤维形成的影响。聚合物溶液的性能和旋转控制参数对并排纤维的机械，电和传感性能的影响也将得到研究。计算流体动力学建模将用于模拟Spinneret内部和湿旋转过程中凝结浴中溶液的流体动力学，以简化和优化实验设计。获得的基本过程结构关系可以适用于多种聚合物解决方案制造技术，包括湿旋转，静电纺丝，直接墨水写作3D打印和微流体旋转。该奖项反映了NSF的法定任务，并认为通过基金会的知识优点和广泛的影响，通过评估值得通过评估来进行评估。