Search results for " Natural fibers"

showing 5 items of 15 documents

Lemongrass Plant as Potential Sources of Reinforcement for Biocomposites: A Preliminary Experimental Comparison Between Leaf and Culm Fibers

2022

AbstractNowadays, the world requires more sustainable and eco-friendly materials to replace or limit the usage of synthetic materials. Moreover, several researchers focused their attention on the use of agricultural sources as reinforcement for biocomposites since they are abundant, cost-effective and environmentally favorable sources. In such a context, purpose of the present paper is the evaluation of lemongrass plant (Cymbopogon flexuosus) as possible source of natural reinforcement for biocomposites. To this aim, natural fibers were obtained from the leaf and the stem of lemongrass and their main properties were compared for the first time. To this scope, mechanical and thermal characte…

Settore ING-IND/22 - Scienza E Tecnologia Dei MaterialiEnvironmental EngineeringPolymers and PlasticsMaterials ChemistryChemical composition Lemongrass Morphology Natural fibers Tensile properties Thermal stabilityJournal of Polymers and the Environment
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LEMONGRASS PLANT LEAF AND CULM AS POTENTIAL SOURCES OF REINFORCEMENT FOR BIO-COMPOSITES

2022

A possible source of natural reinforcement for bio-composites can be represented by lemongrass plant (Cymbopogon flexuosus), a clumped and perennial grass which belongs to the Poaceae family. This plant is extensively used for several applications such as pharmacology, food preservation and cosmetics but, to the best of our knowledge, few papers were published on its use as source for reinforcement of composites and no one article was focused on the comparison between lemongrass leaves and culms as potential source of natural reinforcement. To this aim, a preliminary investigation on leaf and culm fibers was carried out to compare their physical and chemical features as well as their tensil…

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniSettore ING-IND/22 - Scienza E Tecnologia Dei Materialibio-composites biodegradable polymers lemongrass natural fibers
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PBAT Based Composites Reinforced with Microcrystalline Cellulose Obtained from Softwood Almond Shells

2021

This study explores the processability, mechanical, and thermal properties of biocompostable composites based on poly (butylene adipate-co-terephthalate) (PBAT) as polymer matrix and microcrystalline cellulose (MCC) derived from softwood almond (Prunus dulcis) shells (as-MCC) as filler at two different weight concentration, i.e., 10 wt% and 20 wt%. The materials were processed by melt mixing and a commercial MCC (c-MCC) was used as filler comparison. The fibrillar shape of as-MCC particles was found to change the rheological behavior of PBAT, particularly at the highest concentration. The melt mixing processing allowed obtaining a uniform dispersion of both kinds of fillers, slightly reduci…

SoftwoodMaterials sciencePolymers and PlasticsOrganic chemistryengineering.materialagricultural waste valorizationArticlechemistry.chemical_compoundCrystallinityQD241-441natural fibersRheologybiocompostable compositesFiller (materials)Composite materialElastic modulusAgricultural waste valorization Biocompostable composites Microcrystalline cellulose Natural fiberschemistry.chemical_classificationSettore CHIM/06 - Chimica OrganicaGeneral ChemistryPolymerSettore AGR/03 - Arboricoltura Generale E Coltivazioni ArboreeMicrocrystalline celluloseSettore ING-IND/22 - Scienza E Tecnologia Dei MaterialichemistryengineeringDispersion (chemistry)microcrystalline cellulosePolymers
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Basalt Fiber Hybridization Effects on High-Performance Sisal-Reinforced Biocomposites

2022

The increasing attention given to environmental protection, largely through specific regulations on environmental impact and the recycling of materials, has led to a considerable interest of researchers in biocomposites, materials consisting of bio-based or green polymer matrixes reinforced by natural fibers. Among the various reinforcing natural fibers, sisal fibers are particularly promising for their good mechanical properties, low specific weight and wide availability on the current market. As proven in literature by various authors, the hybridization of biocomposites by synthetical fibers or different natural fibers can lead to an interesting improvement of the mechanical properties or…

basaltSettore ING-IND/14 - Progettazione Meccanica E Costruzione Di MacchinebiocompositePolymers and PlasticsagingGeneral Chemistrysisalbiocomposites; natural fibers; sisal; basalt; aging; mechanical performancenatural fibermechanical performancePolymers
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Performances Recovery of Flax Fiber Reinforced Composites after Salt-Fog Aging Test

2022

In the present paper, the performance recovery under conditions of discontinuous exposure to a marine environment of a natural fiber-reinforced composite (NFRC) reinforced by flax fibers was assessed. In particular, this laminate was initially exposed to salt-fog for 15 and 30 days, and then stored in a controlled air condition for up to 21 days. The flax fiber-reinforced composite showed coupled reversible and irreversible aging phenomena during the wet stage, as well as evidencing a significant mechanical recovery during the dry stage. Unlike the stiffness, the laminate showed a noticeable recovery of its flexural strength. This behavior affected the composite material toughness. A simpli…

polymer–matrix composites (PMCs); environmental degradation; natural fibers; wet–dry; agingSettore ING-IND/22 - Scienza E Tecnologia Dei MaterialiCeramics and Compositesaging environmental degradation natural fibers polymer–matrix composites (PMCs) wet–dryEngineering (miscellaneous)
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