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Effect of Pseudomonas putida on the degradation of epoxy resin varnish coating in seawater
Wang, G; Chai, K; Wu, JY; Liu, FC; Wu, JY (reprint author), Hainan Univ, Key Lab, Minist Educ Adv Mat Trop Isl Resources, Mat & Chem Engn Coll, Haikou 570228, Peoples R China.
2016-11-01
Source PublicationINTERNATIONAL BIODETERIORATION & BIODEGRADATION
ISSN0964-8305
Volume115Pages:156-163
AbstractIt is known that microorganisms degrade many materials. However, very little is known about the biodegradation of marine coatings. In this study, we explored the degradation of epoxy resin varnish coating in sterile seawater and seawater inoculated with Pseudomonas putida by the coating permeability analysis, electrochemical impedance spectroscopy, contact angle test, scanning electron microscopy, Fourier transform infrared spectroscopy. The decrease in the corrosion resistance of the coating was significantly higher in seawater inoculated with Pseudomonas putida than in sterile seawater between 48 h and 25 days of coating immersion. The extensive under-coating corrosion appeared on the substrates in both seawater systems, but the corrosion in seawater inoculated with Pseudomonas putida was much more serious. These results suggested that Pseudomonas putida significantly decreased the corrosion resistance of the coating and might decompose the coating. Some pulverization and tiny holes were found on the coating in seawater inoculated with Pseudomonas putida. Moreover, the absorbance of the C-OH peak for the unimmersed coating and the coating immersed in sterile seawater was significantly higher than that for the coating immersed in seawater inoculated with Pseudomonas putida. The results proved that Pseudomonas putida degraded the coating. The degradation could involve the hydroxyl oxidation. (C) 2016 Elsevier Ltd. All rights reserved.
description.department[wang, gang ; chai, ke ; wu, jinyi] hainan univ, key lab, minist educ adv mat trop isl resources, mat & chem engn coll, haikou 570228, peoples r china ; [liu, fuchun] chinese acad sci, key lab nucl mat & safety assessment, inst met res, shenyang 110016, peoples r china
KeywordPseudomonas Putida Biofilms Epoxy Resin Varnish Coating Eis Biodegradation Corrosion
Subject AreaBiotechnology & Applied Microbiology ; Environmental Sciences
Funding OrganizationNational Natural Science Foundation of China [51261006, 51161007, 50761004]; National Basic Research Program of China [2014CB643304]; Key Laboratory of Marine Environmental Corrosion and Biofouling, Institute of Oceanology, Chinese Academy of Sciences [MCKF201403, MCKF201603]; Hainan University's Key Discipline Construction Fund [ZXBJH-XK009, ZXBJH-XK010]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/76189
Collection中国科学院金属研究所
Corresponding AuthorChai, K; Wu, JY (reprint author), Hainan Univ, Key Lab, Minist Educ Adv Mat Trop Isl Resources, Mat & Chem Engn Coll, Haikou 570228, Peoples R China.
Recommended Citation
GB/T 7714
Wang, G,Chai, K,Wu, JY,et al. Effect of Pseudomonas putida on the degradation of epoxy resin varnish coating in seawater[J]. INTERNATIONAL BIODETERIORATION & BIODEGRADATION,2016,115:156-163.
APA Wang, G,Chai, K,Wu, JY,Liu, FC,&Wu, JY .(2016).Effect of Pseudomonas putida on the degradation of epoxy resin varnish coating in seawater.INTERNATIONAL BIODETERIORATION & BIODEGRADATION,115,156-163.
MLA Wang, G,et al."Effect of Pseudomonas putida on the degradation of epoxy resin varnish coating in seawater".INTERNATIONAL BIODETERIORATION & BIODEGRADATION 115(2016):156-163.
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