Magnetic polyurethane based composites as contactless valves in microfluidic applications

IF 4.5 3区 工程技术 Q1 CHEMISTRY, APPLIED
Antonio Veloso-Fernández , Sara Muñana-González , José Manuel Laza , Asier Aguilera-Grande , Daniel Salazar Jaramillo , Leire Ruiz-Rubio , Leyre Pérez-Alvaréz , Jose Luis Vilas-Vilela , Ana Catarina Lopes
{"title":"Magnetic polyurethane based composites as contactless valves in microfluidic applications","authors":"Antonio Veloso-Fernández ,&nbsp;Sara Muñana-González ,&nbsp;José Manuel Laza ,&nbsp;Asier Aguilera-Grande ,&nbsp;Daniel Salazar Jaramillo ,&nbsp;Leire Ruiz-Rubio ,&nbsp;Leyre Pérez-Alvaréz ,&nbsp;Jose Luis Vilas-Vilela ,&nbsp;Ana Catarina Lopes","doi":"10.1016/j.reactfunctpolym.2024.105999","DOIUrl":null,"url":null,"abstract":"<div><p>Magnetoactive polymer composites have garnered significant attention for their potential use in diverse applications, owing to their rapid and reversible response to external magnetic fields. By incorporating magnetic nanoparticles (MNPs) into an elastomeric matrix, these composites exhibit unique properties under static or alternating magnetic fields. In this context, thermo-polyurethane-based magnetic active composites are promising materials for developing microfluidic system components such as valves and peristaltic pumps. In the current study, we investigated the utilization of cobalt ferrite (CoFe<sub>2</sub>O<sub>4</sub>) magnetic nanoparticles in conjunction with a non-toxic synthesis method for polyurethane. It was explored the impact, on the overall success of the process, of cobalt ferrite nanoparticles incorporation at various stages of the thermo-polyurethane (TPU) synthesis reaction. Finally, the effects of different amounts of MNPs on the physicochemical properties of the resulting composites and their behavior as actuators under the influence of a magnetic field, was investigated. Our studies reveal that the actuator response of the composites increases proportionally with the percentage of MNPs present.</p><p>Finally, the performance of a TPU/7.5% (<em>V</em>/V) CoFe2O4 composite strip as a flow control actuator within a microfluidic system was evaluated. This actuator responds to magnetic fields by bending, resulting in a 10% reduction in flow rate of microfluidic system. Reversing the magnetic field restores the flow rate to its initial value. Our cyclic tests illustrate the actuator's capacity to locally and temporarily modulate the microfluidic system's resistance. When combined with tailored TPU elasticity, these materials show significant potential for the fabrication of microfluidic valves and pumps.</p></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5000,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1381514824001743/pdfft?md5=f59d22a02cb6e9b524bfed81a770c70f&pid=1-s2.0-S1381514824001743-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Reactive & Functional Polymers","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1381514824001743","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}
引用次数: 0

Abstract

Magnetoactive polymer composites have garnered significant attention for their potential use in diverse applications, owing to their rapid and reversible response to external magnetic fields. By incorporating magnetic nanoparticles (MNPs) into an elastomeric matrix, these composites exhibit unique properties under static or alternating magnetic fields. In this context, thermo-polyurethane-based magnetic active composites are promising materials for developing microfluidic system components such as valves and peristaltic pumps. In the current study, we investigated the utilization of cobalt ferrite (CoFe2O4) magnetic nanoparticles in conjunction with a non-toxic synthesis method for polyurethane. It was explored the impact, on the overall success of the process, of cobalt ferrite nanoparticles incorporation at various stages of the thermo-polyurethane (TPU) synthesis reaction. Finally, the effects of different amounts of MNPs on the physicochemical properties of the resulting composites and their behavior as actuators under the influence of a magnetic field, was investigated. Our studies reveal that the actuator response of the composites increases proportionally with the percentage of MNPs present.

Finally, the performance of a TPU/7.5% (V/V) CoFe2O4 composite strip as a flow control actuator within a microfluidic system was evaluated. This actuator responds to magnetic fields by bending, resulting in a 10% reduction in flow rate of microfluidic system. Reversing the magnetic field restores the flow rate to its initial value. Our cyclic tests illustrate the actuator's capacity to locally and temporarily modulate the microfluidic system's resistance. When combined with tailored TPU elasticity, these materials show significant potential for the fabrication of microfluidic valves and pumps.

Abstract Image

将磁性聚氨酯基复合材料作为微流控应用中的非接触阀门
磁活性聚合物复合材料由于对外部磁场具有快速和可逆的响应,因此在各种应用中的潜在用途备受关注。通过将磁性纳米粒子(MNPs)加入弹性基体,这些复合材料在静态或交变磁场下表现出独特的性能。在这种情况下,基于热聚氨酯的磁性活性复合材料是开发阀门和蠕动泵等微流控系统组件的理想材料。在当前的研究中,我们调查了钴铁氧体(CoFe2O4)磁性纳米粒子与聚氨酯无毒合成方法的结合使用情况。我们探讨了在热聚氨酯(TPU)合成反应的不同阶段加入钴铁氧体纳米粒子对整个工艺成功的影响。最后,我们研究了不同数量的 MNPs 对所得复合材料理化性质的影响,以及它们在磁场影响下作为致动器的行为。我们的研究表明,复合材料的致动器响应会随着 MNPs 所占比例的增加而成正比增加。最后,我们评估了热塑性聚氨酯/7.5%(V/V)CoFe2O4 复合材料带作为微流控系统中流量控制致动器的性能。这种致动器对磁场的反应是弯曲,导致微流体系统的流速降低 10%。扭转磁场后,流速恢复到初始值。我们的循环测试表明,致动器能够局部、暂时地调节微流体系统的阻力。当这些材料与量身定制的热塑性聚氨酯弹性相结合时,显示出了制造微流控阀门和泵的巨大潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Reactive & Functional Polymers
Reactive & Functional Polymers 工程技术-高分子科学
CiteScore
8.90
自引率
5.90%
发文量
259
审稿时长
27 days
期刊介绍: Reactive & Functional Polymers provides a forum to disseminate original ideas, concepts and developments in the science and technology of polymers with functional groups, which impart specific chemical reactivity or physical, chemical, structural, biological, and pharmacological functionality. The scope covers organic polymers, acting for instance as reagents, catalysts, templates, ion-exchangers, selective sorbents, chelating or antimicrobial agents, drug carriers, sensors, membranes, and hydrogels. This also includes reactive cross-linkable prepolymers and high-performance thermosetting polymers, natural or degradable polymers, conducting polymers, and porous polymers. Original research articles must contain thorough molecular and material characterization data on synthesis of the above polymers in combination with their applications. Applications include but are not limited to catalysis, water or effluent treatment, separations and recovery, electronics and information storage, energy conversion, encapsulation, or adhesion.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信