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淀粉聚乳酸聚己内酯共混材料的性能研究.docx

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淀粉聚乳酸聚己内酯共混材料的性能研究 淀粉聚乳酸聚己内酯共混材料的性能研究 摘要 淀粉聚乳酸聚己内酯共混材料是一种新型的生物降解材料，具有良好的生物降解性和可持续性。本文通过探究淀粉聚乳酸聚己内酯共混材料的制备工艺以及性能表征，分别研究了不同混合比例对其性能的影响。同时，还探究了材料的热性能、力学性能、形态结构和水分吸收性能等方面。结果表明，改变混合比例会显著影响淀粉聚乳酸聚己内酯共混材料的热性能和力学性能，其中40/60的混合比例表现出最优的综合性能。 关键词：淀粉聚乳酸聚己内酯，共混材料，生物降解，可持续性，热性能，力学性能，水分吸收性能 Abstract Starch-poly(lacticacid)-poly(ε-caprolactone)blendmaterialisanovelbiodegradablematerialwithgoodbiodegradabilityandsustainability.Inthispaper,thepreparationprocessandpropertiesofstarch-poly(lacticacid)-poly(ε-caprolactone)blendmaterialwerestudied,andtheeffectsofdifferentmixingratiosontheirpropertieswereinvestigated.Meanwhile,thethermalproperties,mechanicalproperties,morphologyandwaterabsorptionpropertiesofthematerialwerealsoexplored.Theresultsshowedthatchangingthemixingratiowouldsignificantlyaffectthethermalandmechanicalpropertiesofthestarch-poly(lacticacid)-poly(ε-caprolactone)blendmaterial,andthe40/60mixingratioexhibitedthebestcomprehensiveproperties. Keywords:Starch-poly(lacticacid)-poly(ε-caprolactone),blendmaterial,biodegradability,sustainability,thermalproperties,mechanicalproperties,waterabsorptionproperties. 1.Introduction Withtherapiddevelopmentofmodernindustry,plasticproductshavebecomeanimportantpartofhumanlife.However,traditionalplasticproductshavecausedseriousenvironmentalpollutionduetotheirnon-biodegradabilityandnon-sustainability.Therefore,thedevelopmentofbiodegradableandsustainablematerialshasattractedmoreandmoreattentioninrecentyears.Starch-poly(lacticacid)-poly(ε-caprolactone)(SPC)blendmaterialisanovelbiodegradablematerialwithgoodbiodegradabilityandsustainability,whichisagoodsubstitutefortraditionalplasticproducts. SPCblendmaterialiscomposedofthreedifferentpolymers:starch,poly(lacticacid)(PLA),andpoly(ε-caprolactone)(PCL).Starchisanaturalpolymerthatisabundant,renewable,andbiodegradable.PLAandPCLarebiodegradablepolymersthatareproducedbymicrobialfermentationandsyntheticroutes,respectively.ThecombinationofthesethreedifferentpolymersinSPCblendmaterialcanovercomethedisadvantage