第37卷第8期2023年8月中国塑料CHINAPLASTICSVol.37,No.8Aug.,2023聚乙二醇二缩水甘油醚对PLA/PBAT共混材料相容性及性能的影响赵萌萌,杨红娟,沈思宇,冯硕,张伟蒙,胡晶*(北京工商大学化学与材料工程学院,北京100048)摘要:以聚乙二醇二缩水甘油醚(PEGDGE)为相容剂与聚乳酸(PLA)和聚己二酸⁃对苯二甲酸丁二醇酯(PBAT)通过转矩流变仪进行熔融共混。通过傅里叶变换全反射红外光谱仪(ATR⁃FTIR)、扫描电子显微镜(SEM)、差示扫描量热仪(DSC)等探究了不同含量PEDGDE对PLA/PBAT共混体系断面微观形貌、热性能、力学强度等性能的影响。结果表明,与未加PEGDGE的PLA/PBAT的共混体系相比,加入3份PEGDGE时,材料的断裂伸长率可由14.6%增加至38.9%,是PLA/PBAT的2.7倍。加入PEGDGE后,PLA/PBAT共混体系冷结晶向低温移动,且加入5份PEG⁃DGE时,结晶度有明显提升。关键词:聚乳酸;聚己二酸⁃对苯二甲酸丁二醇酯;聚乙二醇二缩水甘油醚;增容剂中图分类号:TQ314.2文献标识码:B文章编号:1001⁃9278(2023)08⁃0020⁃08DOI:10.19491/j.issn.1001⁃9278.2023.08.004Effectofpoly(ethyleneglycoldiglycidylether)oncompatibilityandpropertiesofPLA/PBATblendsZHAOMengmeng,YANGHongjuan,SHENSiyu,FENGShuo,ZHANGWeimeng,HUJing*(CollegeofChemistryandMaterialsEngineering,BeijingTechnologyandBusinessUniversity,Beijing100048,China)Abstract:Poly(lacticacid)(PLA)andpoly(adipicacid⁃butyleneterephthalate)(PBAT)weremeltblendedbyusingatorquerheometerwithpoly(ethyleneglycoldiglycidylether)(PEGDGE)asacompatibilizer.TheeffectofPEDGDEcontentonthepropertiesofPLA/PBATblendssuchascross⁃sectionalmicroscopicmorphology,thermalproperties,andmechanicalstrengthwasinvestigatedusingFourier⁃transforminfraredspectroscopy,scanningelectronmicroscopy,anddifferentialscanningcalorimetry,etc.Theresultsindicatedthatcomparedtotheblendingsystemwithoutacompati⁃bilizer,thePLA/PBAT/PEDGDEblendsachievedanincreaseinelongationatbreakfrom14.6%to38.9%.Sucharesultwas2.7timeshigherthanthatofPLA/PBAT.DuetothepresenceofPEGDGE,thePLA/PBATblendingsys⁃temshowedashiftofcoldcrystallizationpeaktowardsalowtemperature,anditscrystallinityincreasedsignificantlywhen5par...