Research Progress of Environmentally Friendly Marine Antifouling Coatings

2021 ◽  
Author(s):  
Mengyue Liu ◽  
Shaonan Li ◽  
Hao Wang ◽  
Rijia Jiang ◽  
Xing Zhou
Keyword(s):  
Environmentally Friendly ◽  
Research Progress ◽  
Marine Biofouling ◽  
Antifouling Coatings ◽  
Marine Antifouling

Marine biofouling has brought a serious impact on human marine production and transportation activities. Applying antifouling coatings is an effective method to prevent marine biofouling. Here, we have conducted a...

scholarly journals Recent Advances in Mussel-Inspired Synthetic Polymers as Marine Antifouling Coatings

Coatings ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 653 ◽  
Author(s):  
Ioannis Manolakis ◽  
Usaid Azhar
Keyword(s):  
Amino Acid Derivative ◽  
Self Healing ◽  
Underwater Adhesion ◽  
Marine Biofouling ◽  
Recent Advances ◽  
Antifouling Coatings ◽  
The Common ◽  
Active Research ◽  
Research Domain ◽  
Marine Antifouling

Synthetic oligomers and polymers inspired by the multifunctional tethering system (byssus) of the common mussel (genus Mytilus) have emerged since the 1980s as a very active research domain within the wider bioinspired and biomimetic materials arena. The unique combination of strong underwater adhesion, robust mechanical properties and self-healing capacity has been linked to a large extent to the presence of the unusual α-amino acid derivative l-DOPA (l-3,4-dihydroxyphenylalanine) as a building block of the mussel byssus proteins. This paper provides a short overview of marine biofouling, discussing the different marine biofouling species and natural defenses against these, as well as biomimicry as a concept investigated in the marine antifouling context. A detailed discussion of the literature on the Mytilus mussel family follows, covering elements of their biology, biochemistry and the specific measures adopted by these mussels to utilise their l-DOPA-rich protein sequences (and specifically the ortho-bisphenol (catechol) moiety) in their benefit. A comprehensive account is then given of the key catechol chemistries (covalent and non-covalent/intermolecular) relevant to adhesion, cohesion and self-healing, as well as of some of the most characteristic mussel protein synthetic mimics reported over the past 30 years and the related polymer functionalisation strategies with l-DOPA/catechol. Lastly, we review some of the most recent advances in such mussel-inspired synthetic oligomers and polymers, claimed as specifically aimed or intended for use in marine antifouling coatings and/or tested against marine biofouling species.

scholarly journals Research Strategies to Develop Environmentally Friendly Marine Antifouling Coatings

Marine Drugs ◽  
2020 ◽  
Vol 18 (7) ◽  
pp. 371 ◽  
Author(s):  
Yunqing Gu ◽  
Lingzhi Yu ◽  
Jiegang Mou ◽  
Denghao Wu ◽  
Maosen Xu ◽  
...  
Keyword(s):  
Environmentally Friendly ◽  
Research Direction ◽  
Marine Ecology ◽  
Economic Losses ◽  
Research Strategies ◽  
Oil Platforms ◽  
Antifouling Coating ◽  
Antifouling Coatings ◽  
Fouling Organisms ◽  
Marine Antifouling

There are a large number of fouling organisms in the ocean, which easily attach to the surface of ships, oil platforms and breeding facilities, corrode the surface of equipment, accelerate the aging of equipment, affect the stability and safety of marine facilities and cause serious economic losses. Antifouling coating is an effective method to prevent marine biological fouling. Traditional organic tin and copper oxide coatings are toxic and will contaminate seawater and destroy marine ecology and have been banned or restricted. Environmentally friendly antifouling coatings have become a research hotspot. Among them, the use of natural biological products with antifouling activity as antifouling agents is an important research direction. In addition, some fouling release coatings without antifoulants, biomimetic coatings, photocatalytic coatings and other novel antifouling coatings have also developed rapidly. On the basis of revealing the mechanism of marine biofouling, this paper reviews the latest research strategies to develop environmentally friendly marine antifouling coatings. The composition, antifouling characteristics, antifouling mechanism and effects of various coatings were analyzed emphatically. Finally, the development prospects and future development directions of marine antifouling coatings are forecasted.

scholarly journals Research on Key Technology of Electrochemical Sterilization and Physical Application for Circulating Cooling Water

2021 ◽  
Vol 2083 (2) ◽  
pp. 022068
Author(s):  
Xiaohui Wang ◽  
Chunyan Song ◽  
Xueying Xie ◽  
Nan Zhang ◽  
Ruiqing Guo ◽  
...  
Keyword(s):  
Electric Fields ◽  
Electrode Materials ◽  
High Efficiency ◽  
Thermal Power ◽  
Cooling Water ◽  
Environmentally Friendly ◽  
Research Progress ◽  
Electrode Spacing ◽  
Experimental Conditions ◽  
Circulating Cooling Water

Abstract As a high-efficiency, low-cost, convenient and environmentally friendly sterilization technology, electrochemical disinfection has developed rapidly in recent years. Electrochemical sterilization is an environmentally friendly sterilization technology. The research progress of this technology in the recent 30 years in sterilization mechanism and electrode materials is summarized. The mechanism of electrochemical sterilization includes the chemical effects of active chlorine, active intermediates, copper or silver ions, and the physical effects of electric fields; the electrode materials used are titanium anode, carbon cathode, and anode. The article combined with electrochemical equipment in a thermal power plant cold open circulating cooling water treatment experiment. Experimental research found that under the conditions of current density of 120A/m2, residence time of 10s, and electrode spacing of 1.8cm, the bactericidal effect can reach 97%. Under certain experimental conditions and a certain period of time, the total number of heterogeneous bacteria in the circulating cooling water after treatment can be effectively inhibited.

Seawater-responsive SiO2 nanoparticles for in situ generation of zwitterionic polydimethylsiloxane antifouling coatings with underwater superoleophobicity

2020 ◽  
Vol 8 (45) ◽  
pp. 24086-24097
Author(s):  
Jinyan Tan ◽  
Jiakang Xu ◽  
Donghui Wang ◽  
Jinlong Yang ◽  
Shuxue Zhou
Keyword(s):  
Sio2 Nanoparticles ◽  
Antifouling Coatings ◽  
In Situ Generation ◽  
Underwater Superoleophobicity ◽  
Marine Antifouling

A seawater-triggered in situ generation strategy yields underwater superoleophobic PDMS coatings for marine antifouling.

Environmentally Friendly Marine Antifouling Coating Based on a Synergistic Strategy

Langmuir ◽  
2020 ◽  
Vol 36 (9) ◽  
pp. 2396-2402 ◽  
Author(s):  
Changhai Xie ◽  
Hongshuang Guo ◽  
Weiqiang Zhao ◽  
Lei Zhang
Keyword(s):  
Environmentally Friendly ◽  
Antifouling Coating ◽  
Marine Antifouling

scholarly journals One Step Forward towards the Development of Eco-Friendly Antifouling Coatings: Immobilization of a Sulfated Marine-Inspired Compound

Marine Drugs ◽  
2020 ◽  
Vol 18 (10) ◽  
pp. 489
Author(s):  
Cátia Vilas-Boas ◽  
Francisca Carvalhal ◽  
Beatriz Pereira ◽  
Sílvia Carvalho ◽  
Emília Sousa ◽  
...  
Keyword(s):  
Water Solubility ◽  
Exposure Period ◽  
Natural Seawater ◽  
Chemical Immobilization ◽  
Antifouling Activity ◽  
Marine Biofouling ◽  
Marine Coatings ◽  
Antifouling Coatings ◽  
Environmental Properties ◽  
One Step

Marine biofouling represents a global economic and ecological challenge and few eco-friendly antifouling agents are available. The aim of this work was to establish the proof of concept that a recently synthesized nature-inspired compound (gallic acid persulfate, GAP) can act as an eco-friendly and effective antifoulant when immobilized in coatings through a non-release strategy, promoting a long-lasting antifouling effect. The synthesis of GAP was optimized to provide quantitative yields. GAP water solubility was assessed, showing values higher than 1000 mg/mL. GAP was found to be stable in sterilized natural seawater with a half-life (DT50) of 7 months. GAP was immobilized into several commercial coatings, exhibiting high compatibility with different polymeric matrices. Leaching assays of polydimethylsiloxane and polyurethane-based marine coatings containing GAP confirmed that the chemical immobilization of GAP was successful, since releases up to fivefold lower than the conventional releasing systems of polyurethane-based marine coatings were observed. Furthermore, coatings containing immobilized GAP exhibited the most auspicious anti-settlement effect against Mytilus galloprovincialis larvae for the maximum exposure period (40 h) in laboratory trials. Overall, GAP promises to be an agent capable of improving the antifouling activity of several commercial marine coatings with desirable environmental properties.

Fluorinated diols modified polythiourethane copolymer for marine antifouling coatings

2020 ◽  
Vol 146 ◽  
pp. 105733
Author(s):  
Songbo Xie ◽  
Jing Wang ◽  
Lida Wang ◽  
Wen Sun ◽  
Zhaoxia Lu ◽  
...  
Keyword(s):  
Antifouling Coatings ◽  
Marine Antifouling
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