Preparation And Properties Of Slippery Coatings For Marine Antibiofouling

As we all know,biofouling is a worldwide problem in marine systems,caused a great economic waste,and restricts the marine defense and marine affairs in our country seriously.However,the traditional marine antifouling coatings are gradually quitting historical stage due to their high toxicity.Development of novel,nontoxic and efficient antifouling coatings are expected to have a great significance.Recently,slippery liquid-infused porous surfaces(SLIPS)attracted researchers' widespread attention,due to its smoothness,anti-attachment and self-healing properties,exhibiting the significant potential for marine anti-biofouling application.In this paper,using the rmoplastic elastomer poly(styrene)-block-poly(butylene)-blockpoly(styrene)(SEBS)to be the base material,which possess good mechanical stability.two different novel construction methods of surface micro-structure and infused lubricating liquid were used to develop SLIPS,inspired by pitcher plant,for exploring marine anti-biofouling properties.New,effective and non-toxic research methods are provided for the construction of marine antifouling coating.This thesis firstly presented by a facile method to construct a hydrophobic,porous and micro structure surfaces,which using the rmoplastic SEBS solution of different solvent mixture ratio of decanol and xylene cast onto flat glass.And two different viscosity fluorocarbon oils infused into the surfaces to construct SLIPS.We used morphology of droplets analyzer(DSA)analyz the advancing,receding angle and sliding velocity,the results show the SLIPS fabricated have good slip performance.The common bacteriaescherichia coli(E.coli)were used to verify the performance of resistance to bacterial adhesion.Qualitatively and quantitatively characteristic by electron scanning microscope(SEM)and crystal violet staining,the result showed the the SLIPS have good performance for resistance bacterial adhesion.Chlorella were expanded training for the 1-10 days static adhesion experiment to regular monitoring the surfaces of samples by laser confocal scanning microscope(CLSM).The CLSM images of samples are analyzed by Image J software.The results also verified the the SLIPS we fabricated have good performance of resistance chlorella adhesion.Then,the SEBS micro-nanofiber coating was fabricated via a handy electrospinning device BOEA.The lubricating liquids,different viscosity silicon oils,were infused into and strongly adhere the micro-nanofiber coating.droplets analyzer(DSA)analyz the advancing,receding angle and sliding velocity,the slippery angle less than 5°;Compared by non-infused liquids coatings,the slippery coatings could effectively inhibit microorganism adhesion and had liquid repellency properties.The as-fabricated SLIPS and its antifouling performance were characterized by SEM,CLSM and microplate reader for qualitative and quantitative analysis.The sample was still adhered to the algal for up to 15 days to maintain a good adhesion effect.Finally,we confirmed that the all lubricant have no effect on microorganism growth.