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从刷状到树枝状结构：用于调节磁流变液中铁基颗粒与硅油之间界面相容性的工具。

From Brush to Dendritic Structure: Tool for Tunable Interfacial Compatibility between the Iron-Based Particles and Silicone Oil in Magnetorheological Fluids.

作者信息

Kozłowski Szymon, Osička Josef, Ilcikova Marketa, Galeziewska Monika, Mrlik Miroslav, Pietrasik Joanna

机构信息

Department of Chemistry, Institute of Polymer and Dye Technology, Lodz University of Technology, Stefanowskiego 16, 90-537 Lodz, Poland.

Centre of Polymer Systems, Tomas Bata University in Zlin, University Institute, Trida T. Bati 5678, 76001Zlin,Czech Republic.

出版信息

Langmuir. 2024 Mar 12;40(10):5297-5305. doi: 10.1021/acs.langmuir.3c03736. Epub 2024 Mar 2.

DOI:10.1021/acs.langmuir.3c03736
PMID:38430189
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10938888/
Abstract

Comprehensive magnetic particle stability together with compatibility between them and liquid medium (silicone oil) is still a crucial issue in the case of magnetorheological (MR) suspensions to guarantee their overall stability and MR performance. Therefore, this study is aimed at improving the interfacial stability between the carbonyl iron (CI) particles and silicone oil. In this respect, the particles were modified with polymer brushes and dendritic structures of poly(2-(trimethylsilyloxy)ethyl methacrylate) (PHEMATMS), called CI-brushes or CI-dendrites, respectively, and their stability properties (corrosion, thermo-oxidation, and sedimentation) were compared to neat CI ones. Compatibility of the obtained particles and silicone oil was investigated using contact angle and off-state viscosity investigation. Finally, the magneto-responsive capabilities in terms of yield stress and reproducibility of the MR phenomenon were thoroughly investigated. It was found that MR suspensions based on CI-brushes had significantly improved compatibility properties than those of neat CI ones; however, the CI-dendrites-based suspension possessed the best capabilities, while the MR performance was negligibly suppressed.

摘要

在磁流变（MR）悬浮液中，综合磁颗粒稳定性以及它们与液体介质（硅油）之间的兼容性，仍然是确保其整体稳定性和磁流变性能的关键问题。因此，本研究旨在提高羰基铁（CI）颗粒与硅油之间的界面稳定性。在这方面，分别用聚（甲基丙烯酸2-（三甲基硅氧基）乙酯）（PHEMATMS）的聚合物刷和树枝状结构对颗粒进行改性，分别称为CI-刷或CI-树枝状结构，并将它们的稳定性特性（腐蚀、热氧化和沉降）与纯CI颗粒进行比较。通过接触角和零场粘度研究来考察所得颗粒与硅油的兼容性。最后，对屈服应力和磁流变现象的重现性方面的磁响应能力进行了深入研究。结果发现，基于CI-刷的磁流变悬浮液的兼容性性能比纯CI悬浮液有显著改善；然而，基于CI-树枝状结构的悬浮液具有最佳性能，而磁流变性能的抑制可以忽略不计。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae10/10938888/d0bc4294c1b3/la3c03736_0009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae10/10938888/8b714f7c229c/la3c03736_0001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae10/10938888/523de6382888/la3c03736_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae10/10938888/679e4b596b80/la3c03736_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae10/10938888/584553c6ee28/la3c03736_0006.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae10/10938888/096239cbcc21/la3c03736_0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae10/10938888/d0bc4294c1b3/la3c03736_0009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae10/10938888/8b714f7c229c/la3c03736_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae10/10938888/d60b4832dc87/la3c03736_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae10/10938888/cb53b439a090/la3c03736_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae10/10938888/523de6382888/la3c03736_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae10/10938888/679e4b596b80/la3c03736_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae10/10938888/584553c6ee28/la3c03736_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae10/10938888/f27ade36e87e/la3c03736_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae10/10938888/096239cbcc21/la3c03736_0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae10/10938888/d0bc4294c1b3/la3c03736_0009.jpg

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