棉秆皮纤维增强聚丁二酸丁二醇酯复合材料的制备及降解性能研究.docx

棉秆皮纤维增强聚丁二酸丁二醇酯复合材料的制备及降解性能研究
摘要：
本文研究了棉秆皮纤维增强聚丁二酸丁二醇酯（PBB）复合材料的制备及其降解性能。采用手工制备法和压片成型法制备了不同含量的棉秆皮纤维增强PBB复合材料，并利用热重分析和扫描电镜对其降解性能进行了测试。结果表明，棉秆皮纤维可以显著提高PBB复合材料的力学性能和热稳定性，但会降低其热分解温度和玻璃转化温度。此外，随着棉秆皮纤维含量的增加，复合材料的水分吸收率和降解速度也显著增加。因此，在制备棉秆皮纤维增强PBB复合材料时，应根据具体应用要求选择合适的纤维含量和加工工艺。
关键词：棉秆皮纤维；聚丁二酸丁二醇酯；复合材料；降解性能
Introduction
Withtherapiddevelopmentofmodernindustry,traditionalmaterialssuchasmetal,wood,andconcretearegraduallybeingreplacedbycompositematerials,whichhavetheadvantagesoflightweight,highstrength,andgoodcorrosionresistance.However,mostofthesyntheticpolymersusedincompositematerialshavepoorbiodegradabilityandtendtoaccumulateintheenvironment,causingseriouspollutionandecologicalproblems.Therefore,theresearchanddevelopmentofbiodegradablecompositematerialshasbecomeanimportantdirectioninthefieldofmaterialsscience.
Asoneofthemostwidelyusedbiodegradablepolymers,polybutylenesuccinate(PBS)hasexcellentmechanicalandthermalproperties,andcanbedecomposedintocarbondioxideandwaterbymicroorganisms,whichisapromisingalternativetotraditionalplastics.However,themechanicalpropertiesofpurePBSarenotsufficienttomeettherequirementsofsomeapplications,andthepoorcompatibilitywithnaturalfibersmakesitdifficulttopreparehigh-performancefiber-reinforcedcompositematerials.Therefore,itisofgreatsignificancetodeveloplow-costandsustainablenaturalfiberreinforcedPBScompositematerials.
棉秆皮纤维作为一种廉价易得的天然纤维，具有优良的力学性能、生物降解性和可再生性，在复合材料领域有广泛的应用前景。本文通过手工制备法和压片成型法制备了不同含量的棉秆皮纤维增强聚丁二酸丁二醇酯（PBB）复合材料，并研究了其降解性能。
Experimentalsection
Materials
Polybutylenesuccinate(PBS)withaweight-averagemolecularweightof40,000g/molandameltingpointof110°CwaspurchasedfromFoshanXinfengTechnologyCo.,Ltd.Cottonstalkfiberswerecollectedfromalocalpapermillandwashedwithdistilledwatertoremoveimpuritiesanddriedinavacuumovenat60°C.
PreparationofPBS/cottonstalkfibercomposites
ThePBS/cottonstalkfibercompositeswerepreparedbythehand-layupmethodandcompressionmolding.Thecottonstalkfiberswerecuttoalengthof10mmandmixedwithPBSpelletsatdifferentweightfractions(0%,5%,10%