Dual Properties of Polyvinyl Alcohol-Based Magnetorheological Plastomer with Different Ratio of DMSO/Water

Polyvinyl alcohol (PVA)-based magnetorheological plastomer (MRP) possesses excellent magnetically dependent mechanical properties such as the magnetorheological effect (MR effect) when exposed to an external magnetic field. PVA-based MRP also shows a shear stiffening (ST) effect, which is very benef...

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Autores principales:	Norhiwani Mohd Hapipi, Saiful Amri Mazlan, Ubaidillah Ubaidillah, Siti Aishah Abdul Aziz, Seung-Bok Choi, Nur Azmah Nordin, Nurhazimah Nazmi, Zhengbin Pang, Shahir Mohd Yusuf
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	hydrogel magnetorheological plastomer soft sensors skin electronic polyvinyl alcohol Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/ec18e43185034106940f33c83d01bf55
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spelling	oai:doaj.org-article:ec18e43185034106940f33c83d01bf552021-11-25T18:59:05ZDual Properties of Polyvinyl Alcohol-Based Magnetorheological Plastomer with Different Ratio of DMSO/Water10.3390/s212277581424-8220https://doaj.org/article/ec18e43185034106940f33c83d01bf552021-11-01T00:00:00Zhttps://www.mdpi.com/1424-8220/21/22/7758https://doaj.org/toc/1424-8220Polyvinyl alcohol (PVA)-based magnetorheological plastomer (MRP) possesses excellent magnetically dependent mechanical properties such as the magnetorheological effect (MR effect) when exposed to an external magnetic field. PVA-based MRP also shows a shear stiffening (ST) effect, which is very beneficial in fabricating pressure sensor. Thus, it can automatically respond to external stimuli such as shear force without the magnetic field. The dual properties of PVA-based MRP mainly on the ST and MR effect are rarely reported. Therefore, this work empirically investigates the dual properties of this smart material under the influence of different solvent compositions (20:80, 40:60, 60:40, and 80:20) by varying the ratios of binary solvent mixture (dimethyl sulfoxide (DMSO) to water). Upon applying a shear stress with excitation frequencies from 0.01 to 10 Hz, the storage modulus (G′) for PVA-based MRP with DMSO to water ratio of 20:40 increases from 6.62 × 10<sup>−5</sup> to 0.035 MPa. This result demonstrates an excellent ST effect with the relative shear stiffening effect (RSTE) up to 52,827%. In addition, both the ST and MR effect show a downward trend with increasing DMSO content to water. Notably, the physical state of hydrogel MRP could be changed with different solvent ratios either in the liquid-like or solid-like state. On the other hand, a transient stepwise experiment showed that the solvent’s composition had a positive effect on the arrangement of CIPs within the matrix as a function of the external magnetic field. Therefore, the solvent ratio (DMSO/water) can influence both ST and MR effects of hydrogel MRP, which need to be emphasized in the fabrication of hydrogel MRP for appropriate applications primarily with soft sensors and actuators for dynamic motion control.Norhiwani Mohd HapipiSaiful Amri MazlanUbaidillah UbaidillahSiti Aishah Abdul AzizSeung-Bok ChoiNur Azmah NordinNurhazimah NazmiZhengbin PangShahir Mohd YusufMDPI AGarticlehydrogelmagnetorheological plastomersoft sensorsskin electronicpolyvinyl alcoholChemical technologyTP1-1185ENSensors, Vol 21, Iss 7758, p 7758 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	hydrogel magnetorheological plastomer soft sensors skin electronic polyvinyl alcohol Chemical technology TP1-1185
spellingShingle	hydrogel magnetorheological plastomer soft sensors skin electronic polyvinyl alcohol Chemical technology TP1-1185 Norhiwani Mohd Hapipi Saiful Amri Mazlan Ubaidillah Ubaidillah Siti Aishah Abdul Aziz Seung-Bok Choi Nur Azmah Nordin Nurhazimah Nazmi Zhengbin Pang Shahir Mohd Yusuf Dual Properties of Polyvinyl Alcohol-Based Magnetorheological Plastomer with Different Ratio of DMSO/Water
description	Polyvinyl alcohol (PVA)-based magnetorheological plastomer (MRP) possesses excellent magnetically dependent mechanical properties such as the magnetorheological effect (MR effect) when exposed to an external magnetic field. PVA-based MRP also shows a shear stiffening (ST) effect, which is very beneficial in fabricating pressure sensor. Thus, it can automatically respond to external stimuli such as shear force without the magnetic field. The dual properties of PVA-based MRP mainly on the ST and MR effect are rarely reported. Therefore, this work empirically investigates the dual properties of this smart material under the influence of different solvent compositions (20:80, 40:60, 60:40, and 80:20) by varying the ratios of binary solvent mixture (dimethyl sulfoxide (DMSO) to water). Upon applying a shear stress with excitation frequencies from 0.01 to 10 Hz, the storage modulus (G′) for PVA-based MRP with DMSO to water ratio of 20:40 increases from 6.62 × 10<sup>−5</sup> to 0.035 MPa. This result demonstrates an excellent ST effect with the relative shear stiffening effect (RSTE) up to 52,827%. In addition, both the ST and MR effect show a downward trend with increasing DMSO content to water. Notably, the physical state of hydrogel MRP could be changed with different solvent ratios either in the liquid-like or solid-like state. On the other hand, a transient stepwise experiment showed that the solvent’s composition had a positive effect on the arrangement of CIPs within the matrix as a function of the external magnetic field. Therefore, the solvent ratio (DMSO/water) can influence both ST and MR effects of hydrogel MRP, which need to be emphasized in the fabrication of hydrogel MRP for appropriate applications primarily with soft sensors and actuators for dynamic motion control.
format	article
author	Norhiwani Mohd Hapipi Saiful Amri Mazlan Ubaidillah Ubaidillah Siti Aishah Abdul Aziz Seung-Bok Choi Nur Azmah Nordin Nurhazimah Nazmi Zhengbin Pang Shahir Mohd Yusuf
author_facet	Norhiwani Mohd Hapipi Saiful Amri Mazlan Ubaidillah Ubaidillah Siti Aishah Abdul Aziz Seung-Bok Choi Nur Azmah Nordin Nurhazimah Nazmi Zhengbin Pang Shahir Mohd Yusuf
author_sort	Norhiwani Mohd Hapipi
title	Dual Properties of Polyvinyl Alcohol-Based Magnetorheological Plastomer with Different Ratio of DMSO/Water
title_short	Dual Properties of Polyvinyl Alcohol-Based Magnetorheological Plastomer with Different Ratio of DMSO/Water
title_full	Dual Properties of Polyvinyl Alcohol-Based Magnetorheological Plastomer with Different Ratio of DMSO/Water
title_fullStr	Dual Properties of Polyvinyl Alcohol-Based Magnetorheological Plastomer with Different Ratio of DMSO/Water
title_full_unstemmed	Dual Properties of Polyvinyl Alcohol-Based Magnetorheological Plastomer with Different Ratio of DMSO/Water
title_sort	dual properties of polyvinyl alcohol-based magnetorheological plastomer with different ratio of dmso/water
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/ec18e43185034106940f33c83d01bf55
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Dual Properties of Polyvinyl Alcohol-Based Magnetorheological Plastomer with Different Ratio of DMSO/Water

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