Electrospinning of Polymer Nanofibers

聚合物纳米纤维的静电纺丝

• 批准号: 9813098
• 负责人: Yuris Dzenis
• 金额: $ 18万
• 依托单位: University of Nebraska-Lincoln
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-10-01 至 2000-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9813098&HistoricalAwards=false
• 关键词: Electrospinning; Polymer; Nanofibers

9813098 Dzenis This proposal is to conduct a comprehensive experimental and theoretical study of the electrospinning of polymer nanofibers by a splaying of a charged jet as a mechanism to produce nanofibers. The intent is to improve fundamental understanding of the splaying process so that it can be controlled and used for various industrial applications. Modeling of the steady state motion of the dielectric and conductive jets will be continued, with Newtonian and non-Newtonian viscous polymer fluids considered. An electrohydrodynamic model of splaying will be developed based on stability analysis of the steady-sate solution for a single jet. The self-replicating splaying jet will be described by the multiple application of the model at consecutively decreasing scales. Experimental verification of the existence of a supercritical regime will be attempted. Since splaying is unique for the electrospinning of polymers, it provides a mechanism that produces polymer nanofibers in a short distance, as opposed to a mere stretching of a single jet. High volumes of these nanofibers can be produced in this manner. There is collaboration with the biomedical materials industry and with NIST.

小行星9813098 本论文主要是对静电纺丝技术进行理论和实验研究。其目的是提高对张开过程的基本理解，以便其可以被控制并用于各种工业应用。电介质和导电射流的稳态运动的建模将继续进行，考虑牛顿和非牛顿粘性聚合物流体。基于单股射流稳态解的稳定性分析，建立了张开流的电流体动力学模型。 自我复制的张开喷流将通过在连续递减的尺度上多次应用该模型来描述。将尝试实验验证超临界状态的存在。由于张开对于聚合物的静电纺丝是独特的，因此它提供了一种在短距离内产生聚合物纳米纤维的机制，而不是仅仅拉伸单个射流。可以以这种方式生产大量的这些纳米纤维。与生物医学材料行业和NIST合作。