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1、淀粉的FT-IR检测实例FourierTransformInfaredSpectroscopy朱谱新2011.3.17内容淀粉红外光谱及其特征峰C—OBendingVibrations淀粉结晶和结晶度淀粉材料中水分含量氢键混合物成分或基团表面富集2021/8/22四川大学纺织研究所RKIZIL,JIRUDAYARAJ,ANDKSEETHARAMAN,CharacterizationofIrradiatedStarchesbyUsingFT-RamanandFTIRSpectroscopy,J.Agric.FoodChem.2002,50,3912-39181.BandAssi
2、gnmentsforIRSpectraofStarch2021/8/23四川大学纺织研究所Table1.BandAssignmentsforInfraredSpectraofStarch2021/8/24四川大学纺织研究所YuJiugao,WangNing,MaXiaofei,TheEffectsofCitricAcidonthePropertiesofThermoplasticStarchPlasticizedbyGlycerol,Starch/Stärke57(2005)494–504Tab.2.Influenceofstoragetimeonthevibrationwa
3、venumberofC-OgroupsofstarchinFT-IRspectrum.2021/8/25四川大学纺织研究所表1红外吸收波数对应的与氢键形成有关的基团以及Δf的变化马骁飞,于九皋.热塑性淀粉中氢键及其对性能的影响,化学学报,2004,62(12),1180~11842021/8/26四川大学纺织研究所AbsorbancespectrawererecordedonaPerkinElmerspectrophotometerequippedwithaDTGS(deuteratedtriglycine-sulfate)detector.Sampleswereprepar
4、edwith6%(w/w)CLApowders(particlesizebelow50mm)dispersedinKBrpellets(100g).Allpowdersweredriedat105Cfor24hbeforetabletingwithKBrandseveralCL-amyloses,ofdifferentclds,wereused.Typically,256scanswererecordedwitha4cm-1resolution.Forthecalculation,theabsorbanceofthebendingmodeofthewaterdetected
5、at1646cm-1wasnormalizedbydividingthepeakarea(1646cm-1)bythepeakareaoftheCH2modesat2928cm-1.Thelatterwascorrectedforthewatercontributionbyusingspectraldeconvolution.YDumoulin,SAlex,PSzabo,etal.,Cross-linkedamyloseasmatrixfordrugcontrolledrelease.X-rayandFT-IRstructuralanalysis,CarbohydratePo
6、lymers37(1998)361–3702021/8/27四川大学纺织研究所2021/8/28四川大学纺织研究所从纯淀粉的红外图谱(图1)中可以看出,在3000~4000cm-1有淀粉-OH的伸缩振动峰,在859cm-1、760cm-1、572cm-1处有淀粉的-CH2的摇摆吸收峰。马骁飞,于九皋,淀粉/聚酯体系生物可降解材料,高分子通报,2003,(2):15-22表3淀粉FITR谱图中一些重要数据O−H,3391cm-1,强度高;C−H,2949cm-1;C=O,1740cm-1。张倩,吴张永,陆冲,等,改性淀粉/PVA生物降解材料性能的研究,功能高分子学报,2004,
7、17(2):272-276Thespectrumofnativepotatostarchshowsbandsintheregion2900-3000cm-1(CHstretching)andat1150,1124,and1103cm-1(CO,CCstretchingwithsomeCOHcontributions),1077,1047,1022,994,and928cm-1(COHbendingandCH2relatedmodes),and861cm-1(COCsymmetricalstretchin