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Title: Green biolubricant infused slippery surfaces to combat marine biofouling
Authors: Basu, Snehasish
Hanh, Bui My
Chua, Isaiah Jia Qing
Daniel, Dan
Muhammad Hafiz Ismail
Marchioro, Manon
Amini, Shahrouz
Rice, Scott A.
Miserez, Ali
Keywords: Science::Biological sciences
Issue Date: 2020
Source: Basu, S., Hanh, B. M., Chua, I. J. Q., Daniel, D., Muhammad Hafiz Ismail, Marchioro, M., Amini, S., Rice, S. A. & Miserez, A. (2020). Green biolubricant infused slippery surfaces to combat marine biofouling. Journal of Colloid and Interface Science, 568, 185-197.
Project: MSRDP-P2 
Journal: Journal of Colloid and Interface Science 
Abstract: Hypothesis: Marine biofouling is a global, longstanding problem for maritime industries and coastal areas arising from the attachment of fouling organisms onto solid immersed surfaces. Slippery Liquid Infused Porous Surfaces (SLIPS) have recently shown promising capacity to combat marine biofouling. In most SLIPS coatings, the lubricant is a silicone/fluorinated-based synthetic component that may not be fully compatible with the marine life. We hypothesized that eco-friendly biolubricants could be used to replace synthetic lubricants in SLIPS for marine anti-fouling. Experiments: We developed SLIPS coatings using oleic acid (OA) and methyl oleate (MO) as infusing phases. The infusion efficiency was verified with confocal microscopy, surface spectroscopy, wetting effi- ciency, and nanocontact mechanics. Using green mussels as a model organism, we tested the anti-fouling performance of the biolubricant infused SLIPS and verified its non-cytotoxicity against fish gill cells. Findings: We find that UV-treated PDMS infused with MO gives the most uniform infused film, in agreement with the lowest interfacial energy among all surface/biolubricants produced. These surfaces exhibit efficient anti-fouling properties, as defined by the lowest number of mussel adhesive threads attached to the surface as well as by the smallest surface/thread adhesion strength. We find a direct correlation between anti-fouling performance and the substrate/biolubricant interfacial energy.
ISSN: 0021-9797
DOI: 10.1016/j.jcis.2020.02.049
Schools: School of Materials Science and Engineering 
School of Biological Sciences 
Organisations: Centre for Biomimetic Sensor Science
Research Centres: Singapore Centre for Environmental Life Sciences and Engineering 
Rights: © 2020 Elsevier Inc. All rights reserved. This paper was published in Journal of Colloid and Interface Science and is made available with permission of Elsevier Inc.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles
SBS Journal Articles
SCELSE Journal Articles

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