%0 Journal Article
%T Synthesis,CharacterizationandSurfacePropertiesofCross-linkedPolyurethaneDispersionsModifiedbyOrganosiloxane
%A 高明志
%A 许戈文
%J 过程工程学报
%D 2006
%X Aseriesofcross-linkedpolyether-polyesterpolyurethanedispersionsmodifiedwithorganosiloxanewerepreparedbasedonhydroxyl-terminatedpolydimethylsiloxane(HTPS)ashydrophobiccomponentand3-aminopropyl-triethoxysilane(APTS)ascross-linkeraswellasabridgebetweenpolyurethane(PU)andpolysiloxane(PSIL).ItwasdiscoveredthatpolydimethylsiloxanesegmentswereincorporatedintoPUchainschemicallyandorganosiloxanewaspreferentiallyorientedtowardthesurfacelayerofthefilmbymakingacomparisonofattenuatedtotalreflection(ATR)spectrabetweenthecopolymerandtheblendofPUandPSIL,whichwasfurtherconfirmedbyinvestigationofelectronspectroscopyforchemicalanalysis(ESCA).Therelationshipsbetweensurfacepropertiesofthefilmformedfrompolyurethanedispersionandorganosiloxanecontentwerealsostudied.Theresultsshowedthatwatercontactangleofthefilmincreasedwiththeincreaseoforganosiloxanecontent.Interestingly,itwasalsofoundthatwatercontactangleofPUSfilmincreasedfirstlyandthendecreasedwhenfilm-formingtemperaturevariedfrom25℃to55℃.
%K polydimethylsiloxane(PDMS)
%K surfaceproperties
%K polyurethane
%K contactangle
%K characterization
%U http://www.jproeng.com/qikan/Cpaper/zhaiyao.asp?bsid=45