第14卷第14期2023年7月黑龙江科学HEILONGJIANGSCIENCEVol.14Jul.2023PP与PS超疏水膜的制备及疏水性能研究翰春红(黑龙江省科学院石油化学研究院,哈尔滨150040)摘要:采用溶液法制备了具有良好疏水性能的PS与PP薄膜,对其疏水性能及微观形貌进行研究。结果表明,以二甲苯为溶剂,浓度为20~30mg/mL,溶液温度为70~80℃,室温下干燥,此条件下制备的PP膜对超纯水的接触角可达到154。以THF为溶剂,PS在THF中的浓度为20mg/mL,无水乙醇的体积分数为48%,在室温条件下干燥,制备的PS膜对超纯水的接触角可达到152°。粗糙的微观结构对PP与PS的超疏水性能具有重要的影响。研究表明,PP膜中PP分子之间的结合力明显高于PS膜中PS分子之间的结合力,PP超疏水膜的机械稳定性较好。关键词:聚丙烯;聚苯乙烯超疏水;膜材料;微观结构中图分类号:TB383.2(InstituteofPetrochemistry,HeilongjiangAcademyofSciences,Harbin150040,China)Abstract:PSandPPfilmswithgoodhydrophobicpropertiesarepreparedbysolutionmethod,andthehydrophobicpropertiesandmicromorphologyarestudied.Whenxyleneisusedasasolvent,theconcentrationofPPinxyleneis20~30mg/mL,thesolutiontemperatureis70~80℃.Afterdryingatroomtemperature,PPfilmwithexcellentsuperhydrophobicpropertiescanbeprepared,anditscontactangletoultrapurewatercanreach154°.WhenTHFisusedasthesolvent,theconcentrationofPSinTHFis20mg/mL,thevolumefractionofabsoluteethanolis48%.Afterdryingatroomtemperature,PSmembraneswithexcellentsuperhydrophobicpropertiescanbeprepared,andthecontactangleofultrapurewatercanreach152°.ThecoarsemicrostructureisofgreatsignificanceforthesuperhydrophobicpropertiesofPPandPSfilms.ThecomparativestudyfoundthatthebindingforceamongPPmoleculesinPPfilmissignificantlyhigherthanthatamongPSmoleculesinPSfilm,resultinginbettermechanicalstabilityofPPsuperhydrophobicfilm.Keywords:Polypropylene;Polystyrene;Superhydrophobic;Membranematerials;Microstructure0引言通过对高含盐的海水与咸碱水的淡水化处理及含污含油废水的回收处理,可有效缓解淡水资源的短缺问题,而在此处理过程中,膜分离技术是重要的手段,采用的膜材料是核心部件,其需要具备良好的疏水性能[1-3]。近年来,受自然界超疏水现象与结构的启发,人们研发了很多仿生超疏水表面及膜材...