Preparation and performance of fluorinated zwitterionic side-chain modified silicone antifouling coating
GE Jian
HAN Yu
LI Xin
ZHOU Wengong
LI Wei
LI Mei
ZHANG Yunqiang
Abstract：Fluorohydroxylated zwitterionic precursors were synthesized by free radical polymerisation using 2-(dimethylamino)ethyl methacrylate(DEM),dodecylheptyl methacrylate(DFMA)and 3-mercapto-1,2-propanediol as raw materials.The precursors were introduced into the organosilicon polyurethane system by addition polymerization of hydroxyl and isocyanate groups.Zwitterionic ions are obtained through sul-fonation of 1,3-propanesulfonolactone(1,3-PS).The chemical structure of zwitterionic precursors on the antifouling effect of the coating were investigated by nuclear magnetic resonance and infrared spectroscopy.The antifouling effect of the coating was studied by means of a series of tests,including water contact an-gle,tensile test,swelling ratio,adhesion strength,antibacterial and antialgae estimates.The results dem-onstrate that the tensile strength of the obtained coating increases to 8.7 MPa and the water contact angle is up to 100.5°.The antibacterial rate of escherichia coli and the percentage of staphylococcus aureus on the surface of the coating achieve(95.53±3.85)％and(91.60±1.82)％,respectively.The surface en-ergy of the fluorine-containing coating reduces and its antifouling performance is improved greatly.
Keywords：high mechanical strengthlow surface energyantifoulingsilicone coatingfluorinated zwitte-rionic polymers
Publication Date：2025-10-25
Online Publishing Date：2026-08-28(First online date of this platform, not the publication date of the document)
Pages：11( 725-735 )