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Citation:
Ya-jie Xie, Hai-yin Yu, Zhi-kang Xu. SURFACE MODIFICATION OF POLYPROPYLENE MICROPOROUS MEMBRANES BY THE ADSORPTION OF NON-IONIC SURFACTANTS[J]. Chinese Journal of Polymer Science,
;2006, 24(4): 421-429.
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Surfacemodificationbyphysicaladsorptionofaseriesofnon-ionicsurfactantsincludingTween20,Tween40,Tween60,Tween80andTween85,wasaccomplishedonpolypropylenemicroporoushollowfiberandflatmembranes.Theadsorptioncurveofthemembranesurfacewasanalyzedbyweightmeasurementsandthetypicalresultsshowedatwo-platformcharactersimilarly.Differencesinthedegreeandcurveshapeofadsorptionresultingfromsuchfactorsasconcentration,temperature,aswellaswatercleaningtimewereobservedforTween85amongotherTweens.Attenuatedtotalreflection—FouriertransforminfraredspectroscopyanalysisandfieldemissionscanningelectronmicroscopyobservationshowedthattheadsorptionofTweenonpolypropylenemicroporousmembrane(PPMM)iseffectiveandoccursmainlyintheporesofPPMMsatlowadsorptionamount,andonthemembranesurfacealsoathighadsorptionvalue.
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