Hydrophobically modified cotton fabric assisted separation of oil-water mixture

Superhydrophobic-superoleophilic fabrics were prepared and evaluated for oil–water mixture separation efficiencies. The nano-TiO2 and nano-SiO2 based coatings were done on the surface of the cotton fabric to create nanoscale roughness over the surface which was further modified by low energy materia...

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Autores principales:	Neha Bhatt, Abhilasha Mishra, Rekha Goswami
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	coating contact angle separation superhydrophobic Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/e546fbeab93c44b8988988048bad9f77
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spelling	oai:doaj.org-article:e546fbeab93c44b8988988048bad9f772021-12-02T07:40:23ZHydrophobically modified cotton fabric assisted separation of oil-water mixture0273-12231996-973210.2166/wst.2021.266https://doaj.org/article/e546fbeab93c44b8988988048bad9f772021-11-01T00:00:00Zhttp://wst.iwaponline.com/content/84/10-11/2830https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Superhydrophobic-superoleophilic fabrics were prepared and evaluated for oil–water mixture separation efficiencies. The nano-TiO2 and nano-SiO2 based coatings were done on the surface of the cotton fabric to create nanoscale roughness over the surface which was further modified by low energy material 1, 1, 3, 3-Hexamethyldisilazane (HMDS) and, polydimethylsiloxane (PDMS). Particle size and stability of prepared sol were characterized by particle size analysis and zeta potential. Coated cotton fabric samples were characterized by contact angle, contact angle hesteresis and surface free energy for its hydrophobic nature. Surface morphology was studied by scanning electron microscopy (SEM). The coated fabrics were found to be hydrophobic with low surface free energy values. The maximum contact angle was found to be 133° and lowest contact angle hysteresis was 5°. SEM confirmed the appearance of nanoscale surface roughness after coating of sols on cotton fabric. The average particle size and zeta potential values of silica sol was 61 nm and 137 mv whereas for titania sol it was found 344 nm and 200 mv, respectively. The oil–water separation efficiency of coated fabric was also observed by a different oil–water mixture. The coatings were found to be hydrophobic in nature and seem to be very useful for oil–water mixture separation. HIGHLIGHTS Nanosilica (SiO2) and nanotitania (TiO2) were used for hydrophobic-oleophilic coating.; Sols were hydrophobically modified with HMDS and PDMS.; Sols were coated on fabric, to create roughness over the surface.; Coated fabrics were characterized by SEM and contact angle measurements.; Application of coated surface for oil–water separation was performed.; More than 80% of efficiency towards different oil–water mixture.;Neha BhattAbhilasha MishraRekha GoswamiIWA Publishingarticlecoatingcontact angleseparationsuperhydrophobicEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 10-11, Pp 2830-2841 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	coating contact angle separation superhydrophobic Environmental technology. Sanitary engineering TD1-1066
spellingShingle	coating contact angle separation superhydrophobic Environmental technology. Sanitary engineering TD1-1066 Neha Bhatt Abhilasha Mishra Rekha Goswami Hydrophobically modified cotton fabric assisted separation of oil-water mixture
description	Superhydrophobic-superoleophilic fabrics were prepared and evaluated for oil–water mixture separation efficiencies. The nano-TiO2 and nano-SiO2 based coatings were done on the surface of the cotton fabric to create nanoscale roughness over the surface which was further modified by low energy material 1, 1, 3, 3-Hexamethyldisilazane (HMDS) and, polydimethylsiloxane (PDMS). Particle size and stability of prepared sol were characterized by particle size analysis and zeta potential. Coated cotton fabric samples were characterized by contact angle, contact angle hesteresis and surface free energy for its hydrophobic nature. Surface morphology was studied by scanning electron microscopy (SEM). The coated fabrics were found to be hydrophobic with low surface free energy values. The maximum contact angle was found to be 133° and lowest contact angle hysteresis was 5°. SEM confirmed the appearance of nanoscale surface roughness after coating of sols on cotton fabric. The average particle size and zeta potential values of silica sol was 61 nm and 137 mv whereas for titania sol it was found 344 nm and 200 mv, respectively. The oil–water separation efficiency of coated fabric was also observed by a different oil–water mixture. The coatings were found to be hydrophobic in nature and seem to be very useful for oil–water mixture separation. HIGHLIGHTS Nanosilica (SiO2) and nanotitania (TiO2) were used for hydrophobic-oleophilic coating.; Sols were hydrophobically modified with HMDS and PDMS.; Sols were coated on fabric, to create roughness over the surface.; Coated fabrics were characterized by SEM and contact angle measurements.; Application of coated surface for oil–water separation was performed.; More than 80% of efficiency towards different oil–water mixture.;
format	article
author	Neha Bhatt Abhilasha Mishra Rekha Goswami
author_facet	Neha Bhatt Abhilasha Mishra Rekha Goswami
author_sort	Neha Bhatt
title	Hydrophobically modified cotton fabric assisted separation of oil-water mixture
title_short	Hydrophobically modified cotton fabric assisted separation of oil-water mixture
title_full	Hydrophobically modified cotton fabric assisted separation of oil-water mixture
title_fullStr	Hydrophobically modified cotton fabric assisted separation of oil-water mixture
title_full_unstemmed	Hydrophobically modified cotton fabric assisted separation of oil-water mixture
title_sort	hydrophobically modified cotton fabric assisted separation of oil-water mixture
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/e546fbeab93c44b8988988048bad9f77
work_keys_str_mv	AT nehabhatt hydrophobicallymodifiedcottonfabricassistedseparationofoilwatermixture AT abhilashamishra hydrophobicallymodifiedcottonfabricassistedseparationofoilwatermixture AT rekhagoswami hydrophobicallymodifiedcottonfabricassistedseparationofoilwatermixture
_version_	1718399312004644864

Hydrophobically modified cotton fabric assisted separation of oil-water mixture

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