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1、第22卷第11期化學(xué)研究與應(yīng)用VoJ.22.No.I12010年11月ChemicalResearchandApplicationNOV..20l0文章編號:1004—1656(2010)11.1371-05MBA接枝聚丙烯微孔膜的親水改性研究李承斌,尹艷紅,王輝,董紅玉,曹朝霞。,谷繼峰,楊書廷’(1.河南機電高等??茖W(xué)校材料工程系,河南新鄉(xiāng)453002;2.河南省師范大學(xué)化學(xué)與環(huán)境科學(xué)學(xué)院,河南新鄉(xiāng)453007;3.新鄉(xiāng)學(xué)院化學(xué)與化工學(xué)院,河南新鄉(xiāng)453000)摘要:運用表面吸附法使聚丙烯微孔膜表面覆蓋上引發(fā)劑,然后浸入氮氮亞甲基雙丙烯酰胺(M
2、BA)水溶液在一定溫度下進行接枝反應(yīng)。研究了弓f發(fā)劑用量,單體濃度,反應(yīng)時間與溫度對接枝率的影響,并用紅外、掃描電鏡對聚丙烯膜接枝前后的微孔膜進行了表征。同時對膜的親水性和水通量進行了測試,發(fā)現(xiàn)其親水性能有了極大的提高,其中接枝改性后接觸角與未接枝的相比降低了9O。以上,吸水率最多提高了12%,但是水通量有所下降。還對改性微孑L膜的抗污染性能進行了探究。關(guān)鍵詞:表面吸附法;聚丙烯微孔膜;表面親水改性;牛血清白蛋白靜態(tài)吸附;接觸角中圖分類號:0631.4文獻標(biāo)識碼:ASurfacehydrophilicmodificationpolypropylen
3、emicroporousmembranebygraftingN,N’-methylenebisacrylamideLICheng—bin,YINYah.hong2,WANGHui,DONGHong.yu,CAOZhao—xia,GUJi-feng2,YANGShu.ting,,(1.MaterialandEngineeringDepartment,,HenanMechanicalandElectricalEngineeringCollege,Xinxiang,Henan453007,China;2.CollegeofChemistryandEnvi
4、ronmentalScience,.HenanNormalUniversityXinxiang,Henan453007,China;3.CollegeofChemistryandEnvironmentalengineering,XinxiangUniversity,Xinxiang,Henan453003,China)Abstract:Mieroporoushydrophobiepolypropylene(PP)membranesweremodifiedbythechemicalmodificationtechniquetoimpartperman
5、enthydrophilieity.SurfacemodificationofmicroporouspolypropylenemembranewasperformedbygraftingpolymerizationofN,N’-Methylenebisacrylamide(MBA)usingphysisorbedinitiatorsmethod.Thefactorsefectingthegraftingdegreesuchasmonomerconcentration,reactiontemperature,reactiontimeandinitia
6、torconcentrationweredetermined.Theoptimalconditions:initiatorconcentrtion15%(w/V),MBAmonomerconcentration0.2mo1/L,reactiontempreture60degreeCentigrade,reactiontimelessthan4h.Themorphologicalandmicrostructurechangesofthemembranesurfacewereconfirmedbyfouriertransfc·rnlinfraredsp
7、ectroscopy(FI’IR),scanningelectronmicroscopy(SEM).Thepurewatercontactangle,proteinadsorbedamount,waterfluxandwaterswellingpercentagewerestudiedaswel1.Theresultsindicatethattheporesizeandporosityofthegraftedmembranewerereducedaccordingtotheincreaseofgraftingdegree,thestaticcont
8、actangleofpurewateronthegraftedmembranedecreasedfrom101。to9。w