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A green approach to modify surface properties of polyurethane foam for enhanced oil absorption

The non-selective property of conventional polyurethane (PU) foam tends to lower its oil absorption efficiency. To address this issue, we modified the surface properties of PU foam using a rapid solvent-free surface functionalization approach based on the chemical vapor deposition (CVD) method to es...

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Main Authors: Ng, Zhi Chien, Roslan, Rosyiela Azwa, Lau, Woei Jye, Gürsoy, Mehmet, Karaman, Mustafa, Jullok, Nora, Ismail, Ahmad Fauzi
Format: Article
Language:English
Published: MDPI 2020
Subjects:
TP Chemical technology
Online Access:http://eprints.utm.my/id/eprint/91447/1/LauWoeiJye2020_AGreenApproachtoModifySurfaceProperties.pdf
http://eprints.utm.my/id/eprint/91447/
http://dx.doi.org/10.3390/POLYM12091883
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spelling my.utm.914472021-06-30T12:16:27Z http://eprints.utm.my/id/eprint/91447/ A green approach to modify surface properties of polyurethane foam for enhanced oil absorption Ng, Zhi Chien Roslan, Rosyiela Azwa Lau, Woei Jye Gürsoy, Mehmet Karaman, Mustafa Jullok, Nora Ismail, Ahmad Fauzi TP Chemical technology The non-selective property of conventional polyurethane (PU) foam tends to lower its oil absorption efficiency. To address this issue, we modified the surface properties of PU foam using a rapid solvent-free surface functionalization approach based on the chemical vapor deposition (CVD) method to establish an extremely thin yet uniform coating layer to improve foam performance. The PU foam was respectively functionalized using different monomers, i.e., perfluorodecyl acrylate (PFDA), 2,2,3,4,4,4-hexafluorobutyl acrylate (HFBA), and hexamethyldisiloxane (HMDSO), and the effect of deposition times (1, 5 and 10 min) on the properties of foam was investigated. The results showed that all the modified foams demonstrated a much higher water contact angle (i.e., greater hydrophobicity) and greater absorption capacities compared to the control PU foam. This is due to the presence of specific functional groups, e.g., fluorine (F) and silane (Si) in the modified PU foams. Of all, the PU/PHFBAi foam exhibited the highest absorption capacities, recording 66.68, 58.15, 53.70, and 58.38 g/g for chloroform, acetone, cyclohexane, and edible oil, respectively. These values were 39.19-119.31% higher than that of control foam. The promising performance of the PU/PHFBAi foam is due to the improved surface hydrophobicity attributed to the original perfluoroalkyl moieties of the HFBA monomer. The PU/PHFBAi foam also demonstrated a much more stable absorption performance compared to the control foam when both samples were reused for up to 10 cycles. This clearly indicates the positive impact of the proposed functionalization method in improving PU properties for oil absorption processes. MDPI 2020-09 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/91447/1/LauWoeiJye2020_AGreenApproachtoModifySurfaceProperties.pdf Ng, Zhi Chien and Roslan, Rosyiela Azwa and Lau, Woei Jye and Gürsoy, Mehmet and Karaman, Mustafa and Jullok, Nora and Ismail, Ahmad Fauzi (2020) A green approach to modify surface properties of polyurethane foam for enhanced oil absorption. Polymers, 12 (9). pp. 1-14. ISSN 2073-4360 http://dx.doi.org/10.3390/POLYM12091883 DOI:10.3390/POLYM12091883
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic TP Chemical technology
spellingShingle TP Chemical technology
Ng, Zhi Chien
Roslan, Rosyiela Azwa
Lau, Woei Jye
Gürsoy, Mehmet
Karaman, Mustafa
Jullok, Nora
Ismail, Ahmad Fauzi
A green approach to modify surface properties of polyurethane foam for enhanced oil absorption
description The non-selective property of conventional polyurethane (PU) foam tends to lower its oil absorption efficiency. To address this issue, we modified the surface properties of PU foam using a rapid solvent-free surface functionalization approach based on the chemical vapor deposition (CVD) method to establish an extremely thin yet uniform coating layer to improve foam performance. The PU foam was respectively functionalized using different monomers, i.e., perfluorodecyl acrylate (PFDA), 2,2,3,4,4,4-hexafluorobutyl acrylate (HFBA), and hexamethyldisiloxane (HMDSO), and the effect of deposition times (1, 5 and 10 min) on the properties of foam was investigated. The results showed that all the modified foams demonstrated a much higher water contact angle (i.e., greater hydrophobicity) and greater absorption capacities compared to the control PU foam. This is due to the presence of specific functional groups, e.g., fluorine (F) and silane (Si) in the modified PU foams. Of all, the PU/PHFBAi foam exhibited the highest absorption capacities, recording 66.68, 58.15, 53.70, and 58.38 g/g for chloroform, acetone, cyclohexane, and edible oil, respectively. These values were 39.19-119.31% higher than that of control foam. The promising performance of the PU/PHFBAi foam is due to the improved surface hydrophobicity attributed to the original perfluoroalkyl moieties of the HFBA monomer. The PU/PHFBAi foam also demonstrated a much more stable absorption performance compared to the control foam when both samples were reused for up to 10 cycles. This clearly indicates the positive impact of the proposed functionalization method in improving PU properties for oil absorption processes.
format Article
author Ng, Zhi Chien
Roslan, Rosyiela Azwa
Lau, Woei Jye
Gürsoy, Mehmet
Karaman, Mustafa
Jullok, Nora
Ismail, Ahmad Fauzi
author_facet Ng, Zhi Chien
Roslan, Rosyiela Azwa
Lau, Woei Jye
Gürsoy, Mehmet
Karaman, Mustafa
Jullok, Nora
Ismail, Ahmad Fauzi
author_sort Ng, Zhi Chien
title A green approach to modify surface properties of polyurethane foam for enhanced oil absorption
title_short A green approach to modify surface properties of polyurethane foam for enhanced oil absorption
title_full A green approach to modify surface properties of polyurethane foam for enhanced oil absorption
title_fullStr A green approach to modify surface properties of polyurethane foam for enhanced oil absorption
title_full_unstemmed A green approach to modify surface properties of polyurethane foam for enhanced oil absorption
title_sort green approach to modify surface properties of polyurethane foam for enhanced oil absorption
publisher MDPI
publishDate 2020
url http://eprints.utm.my/id/eprint/91447/1/LauWoeiJye2020_AGreenApproachtoModifySurfaceProperties.pdf
http://eprints.utm.my/id/eprint/91447/
http://dx.doi.org/10.3390/POLYM12091883
_version_ 1705056714936549376
score 13.211869

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