Liquid infused porous surfaces for mineral fouling mitigation

JOURNAL OF COLLOID AND INTERFACE SCIENCE

卷:444

Article

Charpentier, Thibaut V. J.¹  Neville, Anne¹  Baudin, Sophie²  Smith, Margaret J.³  Euvrard, Myriam²  Bell, Ashley¹  Wang, Chun¹  Barker, Richard¹ 

[1] Univ Leeds, Inst Funct Surfaces, Leeds LS2 9JT, W Yorkshire, England

[2] Univ Franche Comte, UTINAM Inst, Dept Chem, F-25010 Besancon, France

[3] Univ Glasgow, Ctr Text Conservat & Tech Art Hist, Glasgow G11 6AQ, Lanark, Scotland

关键词: Porous polymer coating;    Liquid infused surfaces;    Slippery surfaces;    Antifouling coatings;    Mineral scale build-up;    Calcium carbonate;   

DOI  :  10.1016/j.jcis.2014.12.043

来源: Elsevier

【 摘 要 】

Prevention of mineral fouling, known as scale, is a long-standing problem in a wide variety of industrial applications, such as oil production, water treatment, and many others. The build-up of inorganic scale such as calcium carbonate on surfaces and facilities is undesirable as it can result in safety risks and associated flow assurance issues. To date the overwhelming amount of research has mainly focused on chemical inhibition of scale bulk precipitation and little attention has been paid to deposition onto surfaces. The development of novel more environmentally-friendly strategies to control mineral fouling will most probably necessitate a multifunctional approach including surface engineering. In this study, we demonstrate that liquid infused porous surfaces provide an appealing strategy for surface modification to reduce mineral scale deposition. Microporous polypyrrole (PPy) coatings were fabricated onto stainless steel substrates by electrodeposition in potentiostatic mode. Subsequent infusion of low surface energy lubricants (fluorinated oil Fluorinert FC-70 and ionic liquid 1-Butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (BMIm)) into the porous coatings results in liquid-repellent slippery surfaces. To assess their ability to reduce surface scaling the coatings were subjected to a calcium carbonate scaling environment and the scale on the surface was quantified using Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES). PPy surfaces infused with BMIm (and Fluorinert to a lesser extent) exhibit remarkable antifouling properties with the calcium carbonate deposition reduced by 18 times in comparison to untreated stainless steel. These scaling tests suggest a correlation between the stability of the liquid infused surfaces in artificial brines and fouling reduction efficiency. The current work shows the great potential of such novel coatings for the management of mineral scale fouling. (C) 2014 Elsevier Inc. All rights reserved.

【 授权许可】

Free