0000000000482173

AUTHOR

Francesco Nicoletti

showing 3 related works from this author

A new eco-friendly chemical treatment of natural fibres: Effect of sodium bicarbonate on properties of sisal fibre and its epoxy composites

2016

Abstract Several researchers have shown how sisal fibres possess remarkable tensile properties that yield them good candidates as reinforcement in biocomposite materials. This work aims to evaluate the effect of an eco-friendly and cost effective surface treatment method based on the use of commercial sodium bicarbonate (i.e. baking soda) on properties of sisal fibre and its epoxy composites. In particular, raw sisal fibres were treated with a 10%w/w of sodium bicarbonate solution for different periods (24, 120 and 240 h), at room temperature. Changes occurring in sisal fibres were characterized through scanning electron microscope, Fourier transform infrared spectroscopy, thermogravimetric…

Thermogravimetric analysisMaterials scienceScanning electron microscopeB. Mechanical propertie02 engineering and technology010402 general chemistry01 natural sciencesIndustrial and Manufacturing EngineeringFibreFlexural strengthUltimate tensile strengthThermal analysisComposite materialFourier transform infrared spectroscopySISALcomputer.programming_languageStatistical properties/methodMechanical EngineeringEpoxyChemical treatment021001 nanoscience & nanotechnology0104 chemical sciencesSettore ING-IND/22 - Scienza E Tecnologia Dei MaterialiMechanics of Materialsvisual_artCeramics and Compositesvisual_art.visual_art_mediumBiocomposite0210 nano-technologycomputerA. Fibres; B. Mechanical properties; C. Statistical properties/methods; Chemical treatment; D. Thermal analysis; Ceramics and Composites; Mechanics of Materials; Mechanical Engineering; Industrial and Manufacturing Engineering
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Control of indoor environments in heritage buildings: experimental measurements in an old Italian museum and proposal of a methodology

2005

Abstract This paper describes some results from an experiment carried out regarding a procedure to be adopted for temperature and R.H. monitoring of indoor spaces designed for exhibiting events, such as museums and similar institutions. The monitored data employed in this study has been collected by the Department di Ricerche Energetiche ed Ambientali of the Universita degli Studi di Palermo in co-operation with the Regional Gallery ''Palazzo Abatellis'' of Palermo. The study analyses a simple method for characterising the environmental quality of museums so as to ensure the optimal conservation of works of art. This methodology is based on the procedure (where thermal and hygrometry parame…

ArcheologyEngineeringArchitectural engineeringReactive sensorMaterials Science (miscellaneous)media_common.quotation_subjectControl (management)ConservationCivil engineeringIndoor air qualityHVACQuality (business)Indoor air qualityAir quality indexSpectroscopyEnvironmental qualitymedia_commonbusiness.industryCultural heritageItalian standard ruleWork (electrical)Chemistry (miscellaneous)Cultural heritageWorks of art conservationbusinessGeneral Economics Econometrics and FinanceJournal of Cultural Heritage
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Bending test for capturing the vivid behavior of giant reeds, returned through a proper fractional visco-elastic model

2015

Abstract This paper presents results of experimental investigations made to evaluate the vivid behavior of giant reed Arundo donax. In particular, attention was paid to the relationship between visco-elastic properties and moisture content, which is widely recognized as one of the key factor that influences the mechanical properties of all wood-based materials. To this aim, after a controlled drying treatment on samples of reed, stress relaxation tests in three point bending configuration were performed to evaluate the effects of moisture content on visco-elastic behavior of the giant reed. Further, the novel aspect of this paper is that of using an Euler–Bernoulli model embedded with an ad…

Materials scienceNatural materialsThree point flexural testConstitutive equationBendingMechanicsPhysics::Classical PhysicsViscoelasticitySettore ING-IND/22 - Scienza E Tecnologia Dei MaterialiMechanics of MaterialsStress relaxation Viscoelastic material Bilogical material Mechanical testing Fractional modelStress relaxationGeneral Materials ScienceComposite materialSettore ICAR/08 - Scienza Delle CostruzioniInstrumentationBeam (structure)
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