 Wysłany: Sob 10:40, 12 Lut 2011 Temat postu: uggs online Quaternary ammonium polymer grafted ce |
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Quaternary ammonium polymer grafted cellulose fibers - Sterilization Mechanism RYAMMONIUMSALT (QAS) GRAFTEDCELLULOSEFIBER - PREPARATIONANDANTI. BACTEIUALFUNCTIoNLUDiannan, ZHOUXuanrong, XINGXiaodong, WANGXiaogong,uggs nederland, LIUZheng (DepartmentofChemicalneering, TsinghuaUniversity, Beijing100084) AbstractSurfacecontactdisinfectingtechniqueisanewlydevelopedmethodforwatersterilization. Anexperimentalprotocoltoelucidatetheanti-bacterialprocessandmechanismwasproposedandappliedtoanovelsurfacecontactdisinfectantmadeofcellulosefibergraftedwithDMAE-BC,tory burch outlet, usingE. Coli, asamodelbacterium. Theminimuminhibitionconcentration (MIC) ofthemonomer, definedasaconcentrationatwhichthegrowthofE. Coli. inwateriscompletelyinhibited, Wasdeterminedbytheplatecountingmethod. MICWasthenusedasanindextocharacterizedisinfectioncapabilityofthemonomers. Thedisinfectionmechanismofthemonomerwasfurtherinvestigatedbymeasuringtheactivityof Lu-galactosidaseandobservingthecellmorphologywithascanningelectronmicroscope (SEM). Toelucidatethedisinfectionprocessandmechanismofthegraftedfiber, thesteadystateanddynamicadsorptionofE. Coli. onthefiberWasexamined, respectively. TheTrc-dehydrogenaseactivityandrespirationactivityofE. Coli. adsorbedonthefibersurfacewerealsodetermined. TheresultsshowedthatthesterilizationprocesythegraftedfiberWascomposedoftwosteps, inwhichtheadsorptionofE. Coli. bacteriaonthefibersurfacedrivenbyelectrostaticinteractionWasafastprocessandcell-lysisWasarelativelyslowprocess. KeywordsDMAE-BC, Polycationicsurfacecontactantibacterialmaterial, Antibacterialkinetics, Innermembranepermeability,puma shoes, Kineticpenetration, Anti-bacterialmechanism More articles related to topics： ralph lauren outlet COVALENTLY BONDING CHIRAL POLY tory burch outlet Electrospun PEO fiber morphology moncler outlet Supported spirit of creative boutiq |
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