Univ.Chem.2023,38(1),155–160155收稿:2022-01-07;录用:2022-01-18;网络发表:2022-03-07†共同第一作者*通讯作者,Email:bmuxieying@bjmu.edu.cn基金资助:北京大学2020年本科教育教学改革项目(202010892-01)•化学实验•doi:10.3866/PKU.DXHX202201014www.dxhx.pku.edu.cnWilhelmy吊片法测定磷脂溶液的表面张力等温线李远非†,杨训方†,王桂玲,郭莹,王煦,李馨儒,周艳霞,谢英*北京大学药学院,北京100191摘要:表面活性物质的表面张力等温线测定是大学物理化学实验的重要内容。随着磷脂类表面活性剂的广泛应用,有必要在大学化学中更新经典表面张力等温线测定的实验内容,并使学生掌握先进的测量方法。以二硬脂酰基磷脂酰胆碱(DSPC)和二棕榈酰基磷脂酰胆碱(DPPC)为研究对象,应用界面张力仪测定了两种溶液表面张力等温线,计算了其表面超量和分子横截面积,并设计了拓展性实验内容,对于培养学生分析问题和解决问题的能力具有积极的意义。关键词:磷脂;表面张力等温线;实验教学中图分类号:G642.0;O647.2DeterminationofSurfaceTensionIsothermofPhospholipidSolutionUsingWilhelmyMethodYuanfeiLi†,XunfangYang†,GuilingWang,YingGuo,XuWang,XinruLi,YanxiaZhou,YingXie*SchoolofPharmaceuticalSciences,PekingUniversity,Beijing100191,China.Abstract:Thedeterminationofsurfacetensionisothermofsurfactantsisanimportantexperimentofcollegephysicalchemistrylaboratory.Withthewideapplicationofsurfactantsandthedevelopmentofscientificinstruments,itisnecessarytoupdatetheexperimentalsystemofclassicalsurfacetensionisothermmeasurements.Herein,thesurfacetensionisothermofdistearoylphosphatidylcholine(DSPC)anddipalmitoylphosphatidylcholine(DPPC)weredeterminedbyinterfacialtensiometer,andtheimportantparameterssuchassurfaceexcessandcross-sectionalareaofmoleculeswerecalculated.Anextendedexperimentwasalsosuggestedsoastopromotethestudents’comprehensiveknowledgeandcultivatethestudents’abilitytoanalyzeandsolveproblems.KeyWords:Phospholipid;Surfacetensionisotherm;Laboratoryteaching随着药剂学新技术的发展,新型药物递送系统如脂质体(Liposomes)[1]、脂质乳(Lipidemulsions,LE)[2]、胶束(Micelles)[3]以及脂质纳米粒(Lipidnanoparticles,LNPs)[4]等,在解决药物溶解度、保护药物...