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Cyclic extrusion of recycled high density polyethylene/banana fiber/fly ash cenosphere biocomposites : thermal and mechanical retention properties / Sukanya Satapathy in INTERNATIONAL POLYMER PROCESSING, Vol. XXXIV, N° 1 (03/2019)
[article]
Titre : Cyclic extrusion of recycled high density polyethylene/banana fiber/fly ash cenosphere biocomposites : thermal and mechanical retention properties Type de document : texte imprimé Auteurs : Sukanya Satapathy, Auteur Année de publication : 2019 Article en page(s) : p. 47-58 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anhydride maléique
Cendres volantes
Cénosphères
Composites -- Analyse
Composites à fibres végétales -- Propriétés mécaniques
Composites à fibres végétales -- Propriétés thermiques
Copolymères greffés
Fibres de banane
Fibres végétales
Matières plastiques -- Extrusion
Morphologie (matériaux)
Polyéthylène haute densité
Produits et matériaux recyclés
Réaction de couplageIndex. décimale : 668.4 Plastiques, vinyles Résumé : Disposal of composite materials used vastly in structural applications raises the need to study the reprocessability of these systems for environmental benefits. In this paper, composites of recycled high density polyethylene (R) containing 30 wt.% banana fiber (BF)/7.5 wt.% fly ash cenospheres (FACS) were prepared with 3 wt.% maleic anhydride grafted high density polyethylene (MA-g-HDPE) as a coupling agent using twin screw extrusion followed by injection molding. The effects of thermal cycles (two times extrusion followed by injection molding) were studied on R and its composites. The samples were characterized by using tensile, flexural, izod impact tests, scanning electron microscopy (SEM), differential scanning calorimetry (DSC), thermogravimetry (TGA) and dynamic mechanical analysis (DMA). The tensile and flexural properties were improved by addition of both BF/FACS into the R matrix. The percentage retention in tensile properties of R/BF/FACS(E2) biocomposites (i.e. two times extrusion followed by injection molding) is more than 80 %, while that for flexural properties is more than 90 %. This indicates that R/BF/FACS composites exhibit good retention ability in mechanical properties after subjecting to two times twin-screw extrusion followed by injection molding. DSC results revealed that repeated extrusion improved the crystallization temperature and crystallinity of the composites with a slight reduction in melting temperature. From the TGA results, it was observed that the thermal stability (e.g. Tonset) of R was reduced by the addition of BF/FACS. However, repeated extrusion showed an improvement in thermal stability of the composites. Note de contenu : - EXPERIMENTAL : Materials - Preparation of RBF and RBFFACS biocomposites - Characterization of R and RBF, RBFFACS biocomposites
- RESULTS AND DISCUSSION : Mechanical properties of R and RBF, RBFFACS biocomposites - Morphology of RBF and RBFFACS biocomposites - Thermal properties of R and RBF, RBFFACS biocompositesDOI : 10.3139/217.3597 En ligne : https://drive.google.com/file/d/1a0hdbsxsRk6VKPg921YRKRDY_MDwn4UA/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31911
in INTERNATIONAL POLYMER PROCESSING > Vol. XXXIV, N° 1 (03/2019) . - p. 47-58[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20669 - Périodique Bibliothèque principale Documentaires Disponible Effect of chemicals treatments on the morphological, mechanical, thermal and water uptake properties of polyvinyl chloride/palm fibers composites / Hamida Boussehel in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES, Vol. 29, N° 1 (02/2019)
[article]
Titre : Effect of chemicals treatments on the morphological, mechanical, thermal and water uptake properties of polyvinyl chloride/palm fibers composites Type de document : texte imprimé Auteurs : Hamida Boussehel, Auteur ; Djamel Eddine Mazouzi, Auteur ; Noureddine Belghar, Auteur ; Belhi Guerira, Auteur ; Mohamed Lachi, Auteur Année de publication : 2019 Article en page(s) : p. 1-8 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chlorure de polyvinyle
Composites à fibres végétales
Composites à fibres végétales -- Propriétés mécaniques
Composites à fibres végétales -- Propriétés thermiques
Fibres de palmes
Humidité -- Absorption:Eau -- Absorption
Morphologie (matériaux)
Traitement chimiqueIndex. décimale : 668.4 Plastiques, vinyles Résumé : The use of natural resources in composite materials becomes more frequently, as they are low-colt and lightweight materials. In addition, industrial trends tend towards Eco-products, hence the importance of integrating natural products that are recyclable and easily degradable. Aim of this study is prepared polymer composites of polyvinyl chloride (PVC) using palm fibers at different loading (10 and 30 % by weight). Improving the interfacial adhesion between matrix- fluer interfaces using chemical modification of date palm fibers (DPF) by two types of treatments (acetylation, alkali). The effect of chemical treatment and fiber content on morphological, thermal, mechanical and water absorption properties of composites have been studies. It was found that the use of treated fibers in PVC composites improves the mechanical properties and decomposition temperature, and reduce water absorption of the composites. Note de contenu : - MATERIAL AND METHODS : Materials - Chemical treatments of palm fibers - Preparation of PVC composites - Characterization
- RESULTS AND DISCUSSION : FTIR results - Characterization of PVC composites
- Table 1 : Properties of polyvinyl chloride (PVC)
- Table 2 : Thermal degradation and derivative weight loose of each thermal degradation stage with 30 wt% of fiber
- Fig. 1 : FTIR spectra of untreated, acetylated and alkali treated palm fibers
- Fig. 2 : SEM micrographs of PVC composites with : neat PVC, untreated fibers, acetylated and alkaly treated palm fibers
- Fig. 3 : Tensile strength of neat PVC and composites with trated and untreated fibers
- Fig. 4 : Elongation at break of neat PVC and composites with treated and untreated fibers
- Fig. 5 : Shore hardness of neat PVC and composites with treated and untreated fibers
- Fig. 6 : Thermograms of weight loss, and derivative weight loss of neat PVC and composites with 30 wt% of treated and untreated fibers
- Fig. 7 : Water absorption of neat PVC and composites with treated and untreated fibers
DOI : https://doi.org/10.18280/rcma.290101 En ligne : https://www.iieta.org/download/file/fid/6902 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34730
in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES > Vol. 29, N° 1 (02/2019) . - p. 1-8[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22404 - Périodique Bibliothèque principale Documentaires Disponible Enhancing the thermal and mechanical characteristics of polyvinyl alcohol (PVA)-hemp protein particles (HPP) composites / S. A. Awad in INTERNATIONAL POLYMER PROCESSING, Vol. 36, N° 2 (2021)
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Titre : Enhancing the thermal and mechanical characteristics of polyvinyl alcohol (PVA)-hemp protein particles (HPP) composites Type de document : texte imprimé Auteurs : S. A. Awad, Auteur Année de publication : 2021 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Chanvre et constituantsLe chanvre ou chanvrier (Cannabis sativa L.) est la seule espèce du genre botanique Cannabis. Ce terme latin est souvent utilisé aussi comme nom vernaculaire pour distinguer les variétés de chanvre cultivé à usage industriel des variétés de cannabis à usage récréatif ou médical. C'est une espèce de plante annuelle, de la famille des Cannabaceae. La graine de chanvre s'appelle le chènevis.
Composites à fibres végétales -- Propriétés mécaniques
Composites à fibres végétales -- Propriétés thermiques
Essais dynamiques
Films composites
Polyacétate de vinyleIndex. décimale : 668.4 Plastiques, vinyles Résumé : This paper aims to describe the thermal, mechanical, and surface properties of a PVA/HPP blend whereby the film was prepared using a solution casting method. The improvements in thermal and mechanical properties of HPP-based PVA composites were investigated. The characterization of pure PVA and PVA composite films included tensile tests, thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). The results of TGA and DSC indicated that the addition of HPP increased the thermal decomposition temperature of the composites. Mechanical properties are significantly improved in PVA/HPP composites. The thermal stability of the PVA composite increased with the increase of HPP filler content. The tensile strength increased from 15.74 ± 0.72 MPa to 27.54 ± 0.45 MPa and the Young’s modulus increased from 282.51 ± 20.56 MPa to 988.69 ± 42.64 MPa for the 12 wt% HPP doped sample. Dynamic mechanical analysis (DMA) revealed that at elevated temperatures, enhanced mechanical properties because of the presence of HPP was even more noticeable. Morphological observations displayed no signs of agglomeration of HPP fillers even in composites with high HPP loading. Note de contenu : - EXPERIMENTAL : Materials - Sample Preparation
- CHARACTERIZATION : Thermogravimetric Analysis (TGA) - Differential Scanning Calorimetry (DSC) - Tensile Tests - Dynamic Mechanical Analysis (DMA) - Scanning Electron Microscopy (SEM)
- RESULTS AND DISCUSSION : Thermogravimetric (TGA) Analysis of PVA Composites - DSC Thermogram Analysis - Mechanical Properties - DMA Analysis - Scanning Electron Microscopy (SEM) Analysis
- Table 1 : TGA data for pure PVA and PVA/HPP composites
- Table 2 : Mechanical properties of pure PVA and PVA composites at different HPP loadingsDOI : https://doi.org/10.1515/ipp-2020-3974 En ligne : https://drive.google.com/file/d/1PFA9-32KZu3ZG5ZbfV2bmYoU4PxpNn9V/view?usp=shari [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36357
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Code-barres Cote Support Localisation Section Disponibilité 23732 - Périodique Bibliothèque principale Documentaires Disponible EPDM-G-GMA toughening of straw/polypropylene composites : mechanical properties, thermal stability and rheological properties / Y. He in INTERNATIONAL POLYMER PROCESSING, Vol. XXXV, N° 1 (03/2020)
[article]
Titre : EPDM-G-GMA toughening of straw/polypropylene composites : mechanical properties, thermal stability and rheological properties Type de document : texte imprimé Auteurs : Y. He, Auteur ; H.-M. Wu, Auteur ; J.-B. Guo, Auteur ; W.-D. He, Auteur ; Y. Zhou, Auteur Année de publication : 2020 Article en page(s) : p. 50-57 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse mécanique dynamique
Analyse thermique
Caractérisation
Composites à fibres végétales -- Propriétés mécaniques
Composites à fibres végétales -- Propriétés thermiques
Ethylène-propylène-diène monomère
Paille
Polypropylène
Rhéologie
Stabilité thermiqueIndex. décimale : 668.4 Plastiques, vinyles Résumé : Natural fiber reinforced polymer composites have the advantages of low density, low cost and renewability. However, the inferior mechanical property restricts the application. In this work, EPDM-g-GMA has been added to straw/PP composites to improve the properties. The mechanical properties, thermal stability, crystallinity and melt viscosity have been invested. The results reveal that the mechanical properties of straw/PP/EPDM composites are improved remarkably and the impact strength more than doubles compared to straw/PP composites. Surface microstructure analysis reveals that the composite has good interfacial compatibility and dispersing performance. The maximum decomposition temperature, the melting enthalpy and crystallinity increased. The glass transition temperature and process ability are also improved by the addition of EPDM. Note de contenu : - EXPERIMENTAL : Materials and equipment - Composite preparation - Characterization
- RESULTS AND DISCUSSION : Mechanical properties - Morphology - Thermal stability - DSC analysis - DMA analysis - Rheological propertiesDOI : https://doi.org/10.3139/217.3836 En ligne : https://drive.google.com/file/d/1EMazIVfzrlz6IUYkZoQSVSzJL9eijUmu/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33778
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Code-barres Cote Support Localisation Section Disponibilité 21578 - Périodique Bibliothèque principale Documentaires Disponible Investigation on mechanical, thermal and water absorption properties of banana/coir reinforced polypropylene hybrid composites / Bujjibabu Gunturu in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES, Vol. 30, N° 3-4 (08/2020)
[article]
Titre : Investigation on mechanical, thermal and water absorption properties of banana/coir reinforced polypropylene hybrid composites Type de document : texte imprimé Auteurs : Bujjibabu Gunturu, Auteur ; Chittaranjandas Vemulapalli, Auteur ; Ramakrishna Malkapuram, Auteur ; Nagarjuna Konduru, Auteur Année de publication : 2020 Article en page(s) : p. 123-131 Note générale : Bibliogr. Langues : Français (fre) Catégories : Composites à fibres végétales -- Propriétés mécaniques
Composites à fibres végétales -- Propriétés thermiques
Diffractométrie de rayons X
Fibres de banane
Fibres de coco
Flexion (mécanique)
Fourier, Spectroscopie infrarouge à transformée de
Humidité -- Absorption:Eau -- Absorption
Polypropylène
Résistance au chocs
Thermogravimétrie
Traction (mécanique)Index. décimale : 668.4 Plastiques, vinyles Résumé : This study explores the merits of B/C fibers reinforced polypropylene to developed high mechanical performance, cost effective and light weight hybrid composite. B/C fibers reinforced polypropylene hybrid composites were prepared with different proportions. Variation in Banana, Coir and B/C fibers in hybrid composites, reveal the tensile, flexural, impact strength and water absorption. The PP and Banana, Coir fibers reinforced Composites were prepared by the twin screw extrusion of PP 80% with B-20, C-20 and B/C 15/5, 10/10 and 5/15 wt%. After extrusion, the extraction strands cut into pallets and injection molded machine make the test specimens. It was found that maximum tensile strength, the flexural strength and the impact strength at 20% of banana fiber. Tensile, flexural and impact strengths marginally have been decreased when decrease the banana fiber in the B/C fiber reinforced polypropylene hybrid composites. Also observed water absorption of same composites for 24 hrs., 48 hrs. and 72 hrs. Thermogravimetry analysis (TGA), fourier transform infrared spectroscopy (FTIR) and XRD (X ray diffraction) was examined. Note de contenu : - MATERIALS AND METHODS : Materials - Manufacturing of composites - Mechanical testing - Water absorption - Thermal properties - FTIR - XRD (X-ray diffraction)
- RESULTS AND DISCUSSION : Tensile properties - Flexural properties - Impact strength - Water absorption - TGA &DTG - FTIR - XRD analysis
- Table 1 : Mechanical properties of B/C reinforced polypropylene hybrid composites
- Table 2 : Percentage of water absorption of B/C fiber reinforced polypropylene hybrid composite
- Table 3 : Functional groups of hybrid compositesDOI : https://doi.org/10.18280/rcma.303-402 En ligne : https://www.iieta.org/download/file/fid/39662 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37638
in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES > Vol. 30, N° 3-4 (08/2020) . - p. 123-131[article]Mechanical and dielectric properties of Cissus Quadrangularis fiber-reinforced epoxy/TiB2 hybrid composites / Vijayakumar Mani in INTERNATIONAL POLYMER PROCESSING, Vol. 38, N° 4 (2023)
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