Comparison of hydrophobicity and durability of functionalized aluminium oxide nanoparticle coatings with magnetite nanoparticles - links between morphology and wettability

Hill, Donald; Barron, Andrew; Alexander, Shirin

doi:10.1016/j.jcis.2019.07.080

Journal article 931 views 335 downloads

Comparison of hydrophobicity and durability of functionalized aluminium oxide nanoparticle coatings with magnetite nanoparticles - links between morphology and wettability

Donald Hill, Andrew Barron

, Shirin Alexander

Journal of Colloid and Interface Science

Swansea University Authors: Andrew Barron , Shirin Alexander

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© 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
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DOI (Published version): 10.1016/j.jcis.2019.07.080

Abstract

HypothesisThe wetting characteristics of coatings created using functionalised nanoparticles and adhesive resins, depends strongly on the particle distribution within the surface layers. Although it has been shown that commercially available adhesives improve the durability of hydrophobic nanopartic...

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Published in:	Journal of Colloid and Interface Science
ISSN:	0021-9797
Published:	2019
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URI:	https://cronfa.swan.ac.uk/Record/cronfa51279
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fullrecord	<?xml version="1.0"?><rfc1807><datestamp>2019-08-01T09:51:23.6823500</datestamp><bib-version>v2</bib-version><id>51279</id><entry>2019-07-31</entry><title>Comparison of hydrophobicity and durability of functionalized aluminium oxide nanoparticle coatings with magnetite nanoparticles - links between morphology and wettability</title><swanseaauthors><author><sid>92e452f20936d688d36f91c78574241d</sid><ORCID>0000-0002-2018-8288</ORCID><firstname>Andrew</firstname><surname>Barron</surname><name>Andrew Barron</name><active>true</active><ethesisStudent>false</ethesisStudent></author><author><sid>0773cc55f7caf77817be08806b8b7497</sid><ORCID>0000-0002-4404-0026</ORCID><firstname>Shirin</firstname><surname>Alexander</surname><name>Shirin Alexander</name><active>true</active><ethesisStudent>false</ethesisStudent></author></swanseaauthors><date>2019-07-31</date><deptcode>CHEG</deptcode><abstract>HypothesisThe wetting characteristics of coatings created using functionalised nanoparticles and adhesive resins, depends strongly on the particle distribution within the surface layers. Although it has been shown that commercially available adhesives improve the durability of hydrophobic nanoparticle coatings, the wettability of these surfaces is governed by the agglomeration behaviour of the particles within the adhesive. As a consequence of this, coatings where the particles are highly agglomerated within the adhesive show lower hydrophobicity.ExperimentsThe morphology and chemical composition of coatings formed from carboxylate functionalised Al2O3 and magnetite (Fe3O4) nanoparticles and epoxy resin on plastic was studied using scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). Water contact angle (WCA) measurements were used to investigate how the coatings’ morphological characteristics and loading of the particles within the surface layers influenced their wettability. Infrared (IR) spectroscopy and thermogravimetric analysis (TGA) were used to study carboxylate adsorption onto the magnetite nanoparticles.FindingsCombining the Al2O3 nanoparticles with epoxy resin was observed to create highly hydrophobic coatings that displayed water contact angles (WCAs) between 145-150°. These coatings displayed good durability when sonicated in isopropanol and wiped with tissue. By comparison, coatings formed from the magnetite nanoparticles were substantially less hydrophobic and displayed WCAs between 75-125° when combined with epoxy resin. SEM revealed that the magnetite nanoparticles in the coatings were present as large agglomerates. By comparison, coatings formed from the Al2O3 nanoparticles showed a more homogenous particle distribution. Furthermore, XPS showed that the resin engulfed the magnetite nanoparticles to a far greater extent. The difference in wetting behaviour of these coatings is largely attributed to their different morphologies, since the particles are similar sizes and TGA shows that the particles possess similar carboxylate grafting densities. The uneven distribution of nanoparticles in the magnetite/ epoxy resin coating is due to the particles’ magnetic properties, which drive nanoparticle agglomeration as the coatings solidify. This work demonstrates that it is important to consider inter-particle interactions when fabricating low wettability composite coatings.</abstract><type>Journal Article</type><journal>Journal of Colloid and Interface Science</journal><publisher/><issnPrint>0021-9797</issnPrint><keywords>Superhydrophobic, Branched hydrocarbon, Aluminium oxide nanoparticles, Magnetite nanoparticles</keywords><publishedDay>31</publishedDay><publishedMonth>12</publishedMonth><publishedYear>2019</publishedYear><publishedDate>2019-12-31</publishedDate><doi>10.1016/j.jcis.2019.07.080</doi><url>https://www.sciencedirect.com/science/article/pii/S0021979719308604?via%3Dihub</url><notes/><college>COLLEGE NANME</college><department>Chemical Engineering</department><CollegeCode>COLLEGE CODE</CollegeCode><DepartmentCode>CHEG</DepartmentCode><institution>Swansea University</institution><apcterm/><lastEdited>2019-08-01T09:51:23.6823500</lastEdited><Created>2019-07-31T11:06:51.3313010</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Engineering and Applied Sciences - Chemical Engineering</level></path><authors><author><firstname>Donald</firstname><surname>Hill</surname><order>1</order></author><author><firstname>Andrew</firstname><surname>Barron</surname><orcid>0000-0002-2018-8288</orcid><order>2</order></author><author><firstname>Shirin</firstname><surname>Alexander</surname><orcid>0000-0002-4404-0026</orcid><order>3</order></author></authors><documents><document><filename>0051279-01082019094948.pdf</filename><originalFilename>hill2019(4).pdf</originalFilename><uploaded>2019-08-01T09:49:48.2500000</uploaded><type>Output</type><contentLength>1502997</contentLength><contentType>application/pdf</contentType><version>Accepted Manuscript</version><cronfaStatus>true</cronfaStatus><embargoDate>2020-07-27T00:00:00.0000000</embargoDate><documentNotes>© 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/</documentNotes><copyrightCorrect>false</copyrightCorrect><language>eng</language></document></documents><OutputDurs/></rfc1807>
spelling	2019-08-01T09:51:23.6823500 v2 51279 2019-07-31 Comparison of hydrophobicity and durability of functionalized aluminium oxide nanoparticle coatings with magnetite nanoparticles - links between morphology and wettability 92e452f20936d688d36f91c78574241d 0000-0002-2018-8288 Andrew Barron Andrew Barron true false 0773cc55f7caf77817be08806b8b7497 0000-0002-4404-0026 Shirin Alexander Shirin Alexander true false 2019-07-31 CHEG HypothesisThe wetting characteristics of coatings created using functionalised nanoparticles and adhesive resins, depends strongly on the particle distribution within the surface layers. Although it has been shown that commercially available adhesives improve the durability of hydrophobic nanoparticle coatings, the wettability of these surfaces is governed by the agglomeration behaviour of the particles within the adhesive. As a consequence of this, coatings where the particles are highly agglomerated within the adhesive show lower hydrophobicity.ExperimentsThe morphology and chemical composition of coatings formed from carboxylate functionalised Al2O3 and magnetite (Fe3O4) nanoparticles and epoxy resin on plastic was studied using scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). Water contact angle (WCA) measurements were used to investigate how the coatings’ morphological characteristics and loading of the particles within the surface layers influenced their wettability. Infrared (IR) spectroscopy and thermogravimetric analysis (TGA) were used to study carboxylate adsorption onto the magnetite nanoparticles.FindingsCombining the Al2O3 nanoparticles with epoxy resin was observed to create highly hydrophobic coatings that displayed water contact angles (WCAs) between 145-150°. These coatings displayed good durability when sonicated in isopropanol and wiped with tissue. By comparison, coatings formed from the magnetite nanoparticles were substantially less hydrophobic and displayed WCAs between 75-125° when combined with epoxy resin. SEM revealed that the magnetite nanoparticles in the coatings were present as large agglomerates. By comparison, coatings formed from the Al2O3 nanoparticles showed a more homogenous particle distribution. Furthermore, XPS showed that the resin engulfed the magnetite nanoparticles to a far greater extent. The difference in wetting behaviour of these coatings is largely attributed to their different morphologies, since the particles are similar sizes and TGA shows that the particles possess similar carboxylate grafting densities. The uneven distribution of nanoparticles in the magnetite/ epoxy resin coating is due to the particles’ magnetic properties, which drive nanoparticle agglomeration as the coatings solidify. This work demonstrates that it is important to consider inter-particle interactions when fabricating low wettability composite coatings. Journal Article Journal of Colloid and Interface Science 0021-9797 Superhydrophobic, Branched hydrocarbon, Aluminium oxide nanoparticles, Magnetite nanoparticles 31 12 2019 2019-12-31 10.1016/j.jcis.2019.07.080 https://www.sciencedirect.com/science/article/pii/S0021979719308604?via%3Dihub COLLEGE NANME Chemical Engineering COLLEGE CODE CHEG Swansea University 2019-08-01T09:51:23.6823500 2019-07-31T11:06:51.3313010 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemical Engineering Donald Hill 1 Andrew Barron 0000-0002-2018-8288 2 Shirin Alexander 0000-0002-4404-0026 3 0051279-01082019094948.pdf hill2019(4).pdf 2019-08-01T09:49:48.2500000 Output 1502997 application/pdf Accepted Manuscript true 2020-07-27T00:00:00.0000000 © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ false eng
title	Comparison of hydrophobicity and durability of functionalized aluminium oxide nanoparticle coatings with magnetite nanoparticles - links between morphology and wettability
spellingShingle	Comparison of hydrophobicity and durability of functionalized aluminium oxide nanoparticle coatings with magnetite nanoparticles - links between morphology and wettability Andrew Barron Shirin Alexander
title_short	Comparison of hydrophobicity and durability of functionalized aluminium oxide nanoparticle coatings with magnetite nanoparticles - links between morphology and wettability
title_full	Comparison of hydrophobicity and durability of functionalized aluminium oxide nanoparticle coatings with magnetite nanoparticles - links between morphology and wettability
title_fullStr	Comparison of hydrophobicity and durability of functionalized aluminium oxide nanoparticle coatings with magnetite nanoparticles - links between morphology and wettability
title_full_unstemmed	Comparison of hydrophobicity and durability of functionalized aluminium oxide nanoparticle coatings with magnetite nanoparticles - links between morphology and wettability
title_sort	Comparison of hydrophobicity and durability of functionalized aluminium oxide nanoparticle coatings with magnetite nanoparticles - links between morphology and wettability
author_id_str_mv	92e452f20936d688d36f91c78574241d 0773cc55f7caf77817be08806b8b7497
author_id_fullname_str_mv	92e452f20936d688d36f91c78574241d_*_Andrew Barron 0773cc55f7caf77817be08806b8b7497_*_Shirin Alexander
author	Andrew Barron Shirin Alexander
author2	Donald Hill Andrew Barron Shirin Alexander
format	Journal article
container_title	Journal of Colloid and Interface Science
publishDate	2019
institution	Swansea University
issn	0021-9797
doi_str_mv	10.1016/j.jcis.2019.07.080
college_str	Faculty of Science and Engineering
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hierarchy_top_id	facultyofscienceandengineering
hierarchy_top_title	Faculty of Science and Engineering
hierarchy_parent_id	facultyofscienceandengineering
hierarchy_parent_title	Faculty of Science and Engineering
department_str	School of Engineering and Applied Sciences - Chemical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemical Engineering
url	https://www.sciencedirect.com/science/article/pii/S0021979719308604?via%3Dihub
document_store_str	1
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description	HypothesisThe wetting characteristics of coatings created using functionalised nanoparticles and adhesive resins, depends strongly on the particle distribution within the surface layers. Although it has been shown that commercially available adhesives improve the durability of hydrophobic nanoparticle coatings, the wettability of these surfaces is governed by the agglomeration behaviour of the particles within the adhesive. As a consequence of this, coatings where the particles are highly agglomerated within the adhesive show lower hydrophobicity.ExperimentsThe morphology and chemical composition of coatings formed from carboxylate functionalised Al2O3 and magnetite (Fe3O4) nanoparticles and epoxy resin on plastic was studied using scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). Water contact angle (WCA) measurements were used to investigate how the coatings’ morphological characteristics and loading of the particles within the surface layers influenced their wettability. Infrared (IR) spectroscopy and thermogravimetric analysis (TGA) were used to study carboxylate adsorption onto the magnetite nanoparticles.FindingsCombining the Al2O3 nanoparticles with epoxy resin was observed to create highly hydrophobic coatings that displayed water contact angles (WCAs) between 145-150°. These coatings displayed good durability when sonicated in isopropanol and wiped with tissue. By comparison, coatings formed from the magnetite nanoparticles were substantially less hydrophobic and displayed WCAs between 75-125° when combined with epoxy resin. SEM revealed that the magnetite nanoparticles in the coatings were present as large agglomerates. By comparison, coatings formed from the Al2O3 nanoparticles showed a more homogenous particle distribution. Furthermore, XPS showed that the resin engulfed the magnetite nanoparticles to a far greater extent. The difference in wetting behaviour of these coatings is largely attributed to their different morphologies, since the particles are similar sizes and TGA shows that the particles possess similar carboxylate grafting densities. The uneven distribution of nanoparticles in the magnetite/ epoxy resin coating is due to the particles’ magnetic properties, which drive nanoparticle agglomeration as the coatings solidify. This work demonstrates that it is important to consider inter-particle interactions when fabricating low wettability composite coatings.
published_date	2019-12-31T04:03:06Z
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score	11.012678

Comparison of hydrophobicity and durability of functionalized aluminium oxide nanoparticle coatings with magnetite nanoparticles - links between morphology and wettability

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