Search results for " Thermogravimetric analysis"

showing 3 items of 3 documents

Characterization of a new natural fiber from Arundo donax L. as potential reinforcement of polymer composites.

2013

Abstract The aim of this paper is to study the possibility of using of Arundo donax L. fibers as reinforcement in polymer composites. The fibers are extracted from the outer part of the stem of the plant, which widely grows in Mediterranean area and is diffused all around the world. To use these lignocellulosic fibers as reinforcement in polymer composites, it is necessary to investigate their microstructure, chemical composition and mechanical properties. Therefore, the morphology of A. donax L. fibers was investigated through electron microscopy, the thermal behavior through thermogravimetric analysis and the real density through a helium pycnometer. The chemical composition of the natura…

Dietary FiberThermogravimetric analysisMaterials sciencePolymers and PlasticsPolymersPoaceaeLigninchemistry.chemical_compoundPolysaccharidesTensile StrengthUltimate tensile strengthMaterials TestingSpectroscopy Fourier Transform InfraredMaterials ChemistryHemicelluloseCelluloseComposite materialCelluloseNatural fiberbiologyOrganic ChemistryTemperatureArundo donaxMicrostructurebiology.organism_classificationCharacterization (materials science)Arundo donax fiber Mechanical property Infrared spectroscopy Thermogravimetric analysis Scanning electron microscopy Statistical analysisSettore ING-IND/22 - Scienza E Tecnologia Dei MaterialichemistryMicroscopy Electron ScanningCarbohydrate polymers
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Structure analysis of titanate nanorods by automated electron diffraction tomography

2011

A hitherto unknown phase of sodium titanate, NaTi3O6(OH)·2H2O, was identified as the intermediate species in the synthesis of TiO2 nanorods. This new phase, prepared as nanorods, was investigated by electron diffraction, X-ray powder diffraction, thermogravimetric analysis and high-resolution transmission electron microscopy. The structure was determined ab initio using electron diffraction data collected by the recently developed automated diffraction tomography technique. NaTi3O6(OH)·2H2O crystallizes in the monoclinic space group C2/m. Corrugated layers of corner- and edge-sharing distorted TiO6 octahedra are intercalated with Na+ and water of crystallization. The nanorods are typically …

Diffractionthermogravimetric analysisReflection high-energy electron diffractionChemistryGeneral Medicinetitanate nanorodsGeneral Biochemistry Genetics and Molecular BiologyCrystallographyElectron diffractionX-ray powder diffractionEnergy filtered transmission electron microscopyautomated electron diffraction tomographyhigh-resolution transmission electron microscopySelected area diffractionHigh-resolution transmission electron microscopyPowder diffractionElectron backscatter diffractionautomated electron diffraction tomography; high-resolution transmission electron microscopy; thermogravimetric analysis; titanate nanorods; X-ray powder diffraction
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Artichoke (Cynara cardunculus L.) fibres as potential reinforcement of composite structures

2011

Abstract The aim of this paper is to examine the use of artichoke fibres as potential reinforcement in polymer composites. The fibres are extracted from the stem of artichoke plant, which grows in Southern Sicily. In order to use these lignocellulosic fibres as potential reinforcement in polymer composites, it is fundamental to investigate their microstructure, chemical composition and mechanical properties. Therefore, the morphology of artichoke fibres was investigated through electron microscopy, the thermal behaviour through thermogravimetric analysis and the real density through a helium pycnometer. The chemical composition of the natural fibres in terms of cellulose, lignin, and ash co…

Thermogravimetric analysisMaterials scienceScanning electron microscopy (SEM)Composite number02 engineering and technologyD. Infrared (IR) spectroscopy010402 general chemistry01 natural sciencesB. Mechanical properties; D. Infrared (IR) spectroscopy; D. Scanning electron microscopy (SEM); D. Thermogravimetric analysis (TGA); Lignocellulosic fibreschemistry.chemical_compoundUltimate tensile strengthLigninCelluloseComposite materialNatural fiberB. Mechanical propertiesbiologyD. Thermogravimetric analysis (TGA)Thermogravimetric analysis (TGA)CynaraGeneral EngineeringD. Scanning electron microscopy (SEM)021001 nanoscience & nanotechnologyMicrostructurebiology.organism_classificationLignocellulosic fibres0104 chemical sciencesSettore ING-IND/22 - Scienza E Tecnologia Dei MaterialichemistryCeramics and Composites0210 nano-technologyInfrared (IR) spectroscopyMechanical propertieLignocellulosic fibre
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