Andy T Clark, Alexander Bennett, Emile Kraus, Katarzyna Pogoda, Andrejs Cēbers, Paul Janmey, Kevin T Turner, Elise A Corbin, Xuemei Cheng
{"title":"Magnetic field tuning of mechanical properties of ultrasoft PDMS-based magnetorheological elastomers for biological applications.","authors":"Andy T Clark, Alexander Bennett, Emile Kraus, Katarzyna Pogoda, Andrejs Cēbers, Paul Janmey, Kevin T Turner, Elise A Corbin, Xuemei Cheng","doi":"10.1088/2399-7532/ac1b7e","DOIUrl":null,"url":null,"abstract":"<p><p>We report tuning of the moduli and surface roughness of magnetorheological elastomers (MREs) by varying applied magnetic field. Ultrasoft MREs are fabricated using a physiologically relevant commercial polymer, Sylgard<sup>™</sup> 527, and carbonyl iron powder (CIP). We found that the shear storage modulus, Young's modulus, and root-mean-square surface roughness are increased by ~41×, ~11×, and ~11×, respectively, when subjected to a magnetic field strength of 95.5 kA m<sup>-1</sup>. Single fit parameter equations are presented that capture the tunability of the moduli and surface roughness as a function of CIP volume fraction and magnetic field strength. These magnetic field-induced changes in the mechanical moduli and surface roughness of MREs are key parameters for biological applications.</p>","PeriodicalId":18949,"journal":{"name":"Multifunctional Materials","volume":"4 3","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9974181/pdf/nihms-1831792.pdf","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Multifunctional Materials","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1088/2399-7532/ac1b7e","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2021/8/25 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"Materials Science","Score":null,"Total":0}
引用次数: 2
Abstract
We report tuning of the moduli and surface roughness of magnetorheological elastomers (MREs) by varying applied magnetic field. Ultrasoft MREs are fabricated using a physiologically relevant commercial polymer, Sylgard™ 527, and carbonyl iron powder (CIP). We found that the shear storage modulus, Young's modulus, and root-mean-square surface roughness are increased by ~41×, ~11×, and ~11×, respectively, when subjected to a magnetic field strength of 95.5 kA m-1. Single fit parameter equations are presented that capture the tunability of the moduli and surface roughness as a function of CIP volume fraction and magnetic field strength. These magnetic field-induced changes in the mechanical moduli and surface roughness of MREs are key parameters for biological applications.
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