NER/Collaborative Research: Manipulation of the Electrospinning of Polymer Fibers Using Applied Magnetic Fields

NER/合作研究：利用外加磁场操纵聚合物纤维的静电纺丝

• 批准号: 0507909
• 负责人: Carlos Rinaldi-Ramos
• 金额: --
• 依托单位: University of Puerto Rico Mayaguez
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-08-01 至 2007-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0507909&HistoricalAwards=false
• 关键词: NER; Collaborative; Research; Manipulation; Electrospinning

This proposal was received in response to the Nanoscale Science and Engineering initiative, NSF 04-043, category Nanoscale Exploratory Research (NER). The objective of this NER research is adding a new degree of freedom to control the transition between the varicose and whipping instability regimes during the electrospinning of nanofibers. The approach involves synthesis and functionalization of magnetic nanoparticles with controlled size, electrospinning experiments with and without applied AC and DC magnetic fields, modification of a custom-made electrospinning apparatus to achieve continuous fiber uptake, and characterization of individual nanofibers using DC magnetization and AC susceptibility, and modified scanning probe microscopy methods. This collaborative project will enhance the participation of underrepresented groups in research activities as students from both institutions will work closely exchanging experimental data, samples and their unique expertise. In addition, the results of this project will provide the basis to develop a debottlenecking strategy for the electrospinning process and new mechanisms to control the geometrical and magnetic distribution of particles inside polymeric fibers. If successful, this research would lead to increased throughput in nanofiber production via electrospinning and development of novel anti-counterfeiting measures for high-value products. The development of novel positive identification and anti-counterfeiting devices could protect American manufacturing industries from unfair and predatory trade practices such as interdiction of illegal technology exports, protection of intellectual property rights, counter industrial theft and curtailing of counterfeit goods.

这项建议是为了响应纳米科学和工程倡议，NSF 04-043，纳米探索性研究(NER)类别。这项NER研究的目的是增加一个新的自由度，以控制在纳米纤维静电纺丝过程中静脉曲张和鞭打不稳定区域之间的转变。该方法包括尺寸可控的磁性纳米颗粒的合成和功能化，在交流电和直流磁场作用下的电纺实验，定制的电纺设备的改进以实现纤维的连续吸收，使用直流磁化和交流磁化率对单个纳米纤维进行表征，以及改进的扫描探针显微镜方法。这一合作项目将加强代表不足的群体对研究活动的参与，因为来自两个机构的学生将密切合作，交流实验数据、样本和他们独特的专业知识。此外，该项目的结果将为开发电纺丝过程的消除瓶颈策略和控制聚合物纤维中颗粒的几何和磁场分布的新机制提供基础。如果成功，这项研究将通过静电纺丝提高纳米纤维的生产能力，并为高价值产品开发新的防伪措施。开发新的正面识别和防伪装置可以保护美国制造业免受不公平和掠夺性贸易做法的影响，如阻止非法技术出口、保护知识产权、打击工业盗窃和限制假冒商品。