99.[14]李萌萌,常明,张勇,等.聚偏二氟乙烯的C—F伸缩振动模式三级中红外光谱研究[J].合成树脂及塑料,2021,38(6):9-14.[15]王维,黄靖,刘梓钰,等.聚偏二氟乙烯β晶型结构三级中红外光谱研究[J].合成纤维工业,2022,45(3):94-99.[16]于宏伟,秦佳慧,张美环,等.纳米级羟基磷灰石结构及热变性研究[J].硫磷设计与粉体工程,2022(2):27-32.Three⁃levelmiddleinfraredspectroscopystudyonαcrystalstructureandthermalstabilityofPVDFmoleculeWANGWei1,FENGGuanchao1,BIRui1,HUANGJing2,XUYuanyuan2,YUHongwei2(1.CollegeofLightIndustryandTextile,QiqiharUniversity,Qiqihar161006;2.CollegeofChemicalTechnology,ShijiazhuangUniversity,Shijiazhuang050035)Abstract:Theαcrystalstructureofpolyvinylidenefluoride(PVDF)moleculewasstudiedbymiddleinfrared(MIR)spectrosco⁃py,andthethermalstabilityofαcrystalstructureofPVDFmoleculebytemperature⁃dependentMIRspectroscopy(TD⁃MIR)andtwo⁃dimensionalMIRspectroscopy(2D⁃MIR).TheresultsshowedthatthespectralresolutionofdeconvolutedMIRspectrumwasbetterthanthatofone⁃dimensionalMIRspectrum,secondderivativeMIRspectrumandfourthderivativeMIRspectrumoftheαcrystalstructureofPVDFmolecule;theinfraredabsorptionmodesoftheαcrystalstr...