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Development of Green Low Surface Energy (Superhydrophobic) Material for Various Surfaces / CELINA DLOFO

Swansea University Author: CELINA DLOFO

Abstract

Superhydrophobic materials maintain air at the solid-liquid interface, when in contact with water and it can be defined as the tendency of a surface to repel water droplets. These surfaces possess high contact angles of at least 150°, low hysteresis contact angle <10o. Superhydrophobic surfaces h...

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Published: Swansea 2022
Institution: Swansea University
Degree level: Master of Research
Degree name: MSc by Research
Supervisor: Alexander, Shirin ; Barron, Andrew
URI: https://cronfa.swan.ac.uk/Record/cronfa59816
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first_indexed 2022-04-13T13:06:47Z
last_indexed 2022-04-14T03:32:00Z
id cronfa59816
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spelling 2022-04-13T14:23:12.9784922 v2 59816 2022-04-13 Development of Green Low Surface Energy (Superhydrophobic) Material for Various Surfaces 75d4d77f39a254404ecb3934dbfd2c5c CELINA DLOFO CELINA DLOFO true false 2022-04-13 Superhydrophobic materials maintain air at the solid-liquid interface, when in contact with water and it can be defined as the tendency of a surface to repel water droplets. These surfaces possess high contact angles of at least 150°, low hysteresis contact angle <10o. Superhydrophobic surfaces have a wide range of application due to their self-cleaning, antifogging, anticorrosion, biomedical characteristics. A substantial body of research is based around the use of relatively expensive fluorocarbons and environmentally hazardous methods to obtain superhydrophobic surfaces. This study proposes an alternative method of fabricating superhydrophobic surfaces, through a cleaner and more cost-effective process which adopts highly branched hydrocarbon chains. To meet the objective of this study, superhydrophobic surfaces were fabricated, which make use of environmentally friendly, non-hazardous (i.e., when in contact with skin) as well as cost effective. We focus on the nanoparticles Al2O3 (13 nm) and SiO2 (10-20 nm), particularly on the impact of the nanoparticle sizes, properties, and shape. As a result of this alternative method, alumina (Al2O3) and silica (SiO2) nanoparticles were easily synthesized with the appropriate carboxylic acid and then spray coated unto different surfaces. After the fabrication process, a static contact angle of 153o were obtained for the functionalized Al2O3 (13 nm) nanoparticles with lanolin (1:5), showing low affinity with water and the droplet of water rolls off easily across the surface. E-Thesis Swansea superhydrophobic, nanoparticles, contact angle 30 3 2022 2022-03-30 COLLEGE NANME COLLEGE CODE Swansea University Alexander, Shirin ; Barron, Andrew Master of Research MSc by Research KESS 2, SALTS – Healthcare 2022-04-13T14:23:12.9784922 2022-04-13T14:03:18.9781576 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised CELINA DLOFO 1 59816__23837__9388d40d57ed45d4b1574d273e3ba3e9.pdf Dlofo_Celina_MSc_Research_Thesis_ Final_Redacted_Signature.pdf 2022-04-13T14:14:41.5205025 Output 22548381 application/pdf E-Thesis – open access true Copyright: The author, Celina Dlofo, 2022. true eng
title Development of Green Low Surface Energy (Superhydrophobic) Material for Various Surfaces
spellingShingle Development of Green Low Surface Energy (Superhydrophobic) Material for Various Surfaces
CELINA DLOFO
title_short Development of Green Low Surface Energy (Superhydrophobic) Material for Various Surfaces
title_full Development of Green Low Surface Energy (Superhydrophobic) Material for Various Surfaces
title_fullStr Development of Green Low Surface Energy (Superhydrophobic) Material for Various Surfaces
title_full_unstemmed Development of Green Low Surface Energy (Superhydrophobic) Material for Various Surfaces
title_sort Development of Green Low Surface Energy (Superhydrophobic) Material for Various Surfaces
author_id_str_mv 75d4d77f39a254404ecb3934dbfd2c5c
author_id_fullname_str_mv 75d4d77f39a254404ecb3934dbfd2c5c_***_CELINA DLOFO
author CELINA DLOFO
author2 CELINA DLOFO
format E-Thesis
publishDate 2022
institution Swansea University
college_str Faculty of Science and Engineering
hierarchytype
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 - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 1
active_str 0
description Superhydrophobic materials maintain air at the solid-liquid interface, when in contact with water and it can be defined as the tendency of a surface to repel water droplets. These surfaces possess high contact angles of at least 150°, low hysteresis contact angle <10o. Superhydrophobic surfaces have a wide range of application due to their self-cleaning, antifogging, anticorrosion, biomedical characteristics. A substantial body of research is based around the use of relatively expensive fluorocarbons and environmentally hazardous methods to obtain superhydrophobic surfaces. This study proposes an alternative method of fabricating superhydrophobic surfaces, through a cleaner and more cost-effective process which adopts highly branched hydrocarbon chains. To meet the objective of this study, superhydrophobic surfaces were fabricated, which make use of environmentally friendly, non-hazardous (i.e., when in contact with skin) as well as cost effective. We focus on the nanoparticles Al2O3 (13 nm) and SiO2 (10-20 nm), particularly on the impact of the nanoparticle sizes, properties, and shape. As a result of this alternative method, alumina (Al2O3) and silica (SiO2) nanoparticles were easily synthesized with the appropriate carboxylic acid and then spray coated unto different surfaces. After the fabrication process, a static contact angle of 153o were obtained for the functionalized Al2O3 (13 nm) nanoparticles with lanolin (1:5), showing low affinity with water and the droplet of water rolls off easily across the surface.
published_date 2022-03-30T04:17:24Z
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score 11.016235

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