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Effect of acrylation on the properties of waterborne epoxy : evaluation of physicochemical, thermal, mechanical and morphological properties / Sukanya Pradhan in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 3 (05/2018)
[article]
Titre : Effect of acrylation on the properties of waterborne epoxy : evaluation of physicochemical, thermal, mechanical and morphological properties Type de document : texte imprimé Auteurs : Sukanya Pradhan, Auteur ; Smita Mohanty, Auteur ; Sanjay K. Nayak, Auteur Année de publication : 2018 Article en page(s) : p. 515-526 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosion
Calorimétrie
Copolymère époxy acrylate
Copolymères -- Synthèse
Formulation (Génie chimique)
Fourier, Spectroscopie infrarouge à transformée de
Morphologie (matériaux)
Résonance magnétique nucléaire
Revêtements -- Analyse
Revêtements en phase aqueuse
ThermogravimétrieIndex. décimale : 667.9 Revêtements et enduits Résumé : The present work addresses the critical requirements for the coating industry such as developing the sustainability of biobased materials and simultaneously achieving a balanced combination of coating properties. In this study, acrylated epoxidized soybean oil (AESO) has been successfully synthesized from epoxidized soybean oil and acrylic acid. Subsequently, AESO was modified using a biobased long chain diacid (Pripol-1009) with the assistance of a water/ethanol blend to form waterborne epoxy acrylate (WBEA). The properties of the cured WBEA with 2,5-bis(tert-butylperoxy)-2,5-dimethylhexane as initiator were studied through spectral analysis, coating properties evaluation, corrosion resistance, and morphological and thermal analysis. The results revealed that WBEA exhibited relatively better mechanical, thermal and corrosion resistance characteristics over cured waterborne epoxy.
Keywords
Waterborne Acrylate Epoxy Pripol-1009Note de contenu : - MATERIALS AND METHODS : Materials - Synthesis of waterborne epoxy (WBE) - Synthesis of waterborne epoxy acrylate (WBEA) - Formulation of coatings
- CHARACTERIZATION : Physicochemical characteristics - Spectral analysis - Swelling and crosslink density study - Coating properties - Morphological analysis
- RESULTS AND DISCUSSION : Physicochemical characteristics - Proton NMR analysis - Differential scanning calorimetry analysis - Fourier transform infrared spectroscopic (FTIR) analysis - Swelling and crosslink density study - Coatings properties - Corrosion resistance - Morphological analysis - Thermogravimetric analysisDOI : 10.1007/s11998-018-0006-7 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-017-0006-7.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30748
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 15, N° 3 (05/2018) . - p. 515-526[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20024 - Périodique Bibliothèque principale Documentaires Disponible Effect of cardanol diol on the synthesis, characterization, and film properties of aqueous polyurethane dispersions / Kattimuttathu I. Suresh in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 11, N° 4 (07/2014)
[article]
Titre : Effect of cardanol diol on the synthesis, characterization, and film properties of aqueous polyurethane dispersions Type de document : texte imprimé Auteurs : Kattimuttathu I. Suresh, Auteur ; M. G. Harikrishnan, Auteur Année de publication : 2014 Article en page(s) : p. 619-629 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Angle de contact
Caractérisation
Cardanol
Granulométrie
Morphologie (matériaux)
Polymères en émulsion
Polyols
Polyuréthanes
Revêtements -- Propriétés mécaniques
Revêtements -- Propriétés thermiques
Taille des particules
ViscoélasticitéIndex. décimale : 667.9 Revêtements et enduits Résumé : This article reports on the effect of a diol prepared from a renewable resource, cardanol, on the synthesis, film formation and film properties of aqueous polyurethane dispersions. The PU dispersions were prepared by the acetone process from poly(tetramethylene ether)glycol (PTMEG) and isophorone diisocyanate (IPDI) prepolymer at constant NCO/OH ratio of 1:1.1. Dispersions with two different concentrations of cardanol diol (OH value 140 mg KOH/g) were prepared through chain extension and characterized for solid content, particle size, and particle-size distribution (PSD). Free films were prepared by casting and were studied for their thermal, mechanical, viscoelastic, and hydrophobic properties. Due to the broad PSD, the dispersions containing cardanol diol exhibit better film formation property in comparison to the butane diol chain-extended PU. Soft and flexible films were obtained using cardanol diol as chain extender, whereas brittle film was obtained with butane diol chain extender. Morphological characterization using atomic force microscopy (AFM) and scanning electron microscopy (SEM) suggests a heterogeneous and amorphous nature of the polyurethanes-containing cardanol diol. The thermomechanical and viscoelastic properties show that incorporation of cardanol diol decreases the glass transition temperature and modulus of the films but enhances the properties like thermal stability, hydrophobicity, elongation, etc., of the polyurethane films. Note de contenu : - EXPERIMENTAL : Materials - preparation of cardanol diol - Synthesis of polyurethane dispersion - Preparation of PU films - Characterizations
- RESULTS AND DISCUSSION : Synthesis and characterization of PU dispersions - Particle size and particle-size distribution (PSD) - Mechanical properties - Contact angle measurements - Film morphology - Thermogravimetric analysisDOI : 10.1007/s11998-014-9571-1 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-014-9571-1.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21722
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 11, N° 4 (07/2014) . - p. 619-629[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16424 - 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 Effect of compounding conditions on static and dynamic mechanical properties of high density polyethylene/ground tire rubber blends / Krzysztof Formela in INTERNATIONAL POLYMER PROCESSING, Vol. XXIX, N° 2 (05/2014)
[article]
Titre : Effect of compounding conditions on static and dynamic mechanical properties of high density polyethylene/ground tire rubber blends Type de document : texte imprimé Auteurs : Krzysztof Formela, Auteur ; C. Cysewska, Auteur ; J. Korol, Auteur Année de publication : 2014 Article en page(s) : p. 272-279 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alliages polymères
Alliages polymères -- propriétés mécaniques
Analyse mécanique dynamique
Caoutchouc
Matières plastiques -- Extrusion
Morphologie (matériaux)
PolyéthylèneIndex. décimale : 668.9 Polymères Résumé : Searching for new and cost-effective methods of waste rubber recycling is a subject of research in many scientific centers in the world. In this paper there are presented results of the research of the extrusion process of cheap and environmentally friendly thermoplastic compositions containing 50% wt. of masses of ground tire rubber (GTR). The aim of this study was to determine the relationship between the mixing conditions and properties of obtained products, which is important from a technological point of view. The mixing conditions were determined by using two variables: the screw configuration (co-rotating and counter-rotating) and the type of polyethylene. In the case of both variables, thermoplastic compositions were treated with various shear forces induced by screw speed changes. The influence of mixing conditions on the extrusion process was determined (screw torque, melt flow rate) as well as static and dynamic mechanical properties of obtained materials. Note de contenu : - EXPERIMENTAL : Materials - Sample preparation - Measurements
- RESULTS AND DISCUSSION : Processing parameters - Static mechanical properties - Dynamic mechanical analysis - Morphology
DOI : 10.3139/217.2849 En ligne : https://drive.google.com/file/d/1xcSesJzAdWj1hPZRX0QCte9bd5JGWzjm/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21322
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Code-barres Cote Support Localisation Section Disponibilité 16222 - Périodique Bibliothèque principale Documentaires Disponible Effect of different fiber fly quantity on surface of cellulose diacetate filament / Pengxiang Li in CHEMICAL FIBERS INTERNATIONAL, Vol. 63, N° 3 (09/2013)
[article]
Titre : Effect of different fiber fly quantity on surface of cellulose diacetate filament Type de document : texte imprimé Auteurs : Pengxiang Li, Auteur ; Shaohua Wu, Auteur ; Xiaohong Qin, Auteur ; Jianxin Huang, Auteur ; Yuefei Wang, Auteur ; Zhanping Yang, Auteur Année de publication : 2013 Article en page(s) : p. 156-159 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Diacétate de cellulose Le diacétate de cellulose, appelé parfois simplement diacétate, est un polymère artificiel. En effet, il est fabriqué par traitement de la cellulose par l'acide acétique.
Il est constitué de deux radicaux acétate sur chaque unité de D-Anhydroglucopyranose de la molécule cellulosique.
Il est à différencier des acétate de cellulose et triacétate de cellulose.
Il est fragile parce qu'à base de cellulose. Lorsqu'il se détériore, la cellulose se rétracte et libère l'acide acétique, ce qui provoque un "syndrome du vinaigre".
Energie de surface
Fibres textiles -- Surfaces
Fibres textiles synthétiques
Hydrophilie
Microscopie à force atomique
Microscopie électronique à balayage
Morphologie (matériaux)
VolardsDéchets de fibres très courtes, libérés dans l'air pendant les opérations de transformation des textiles, comme le battage, le cardage, la filature et le tissage.Index. décimale : 677.46 Cellulosiques : rayonnes, acetates Résumé : Cellulose diacetate has been used in the cigarette filter industry due to numerous advantages such as its odorlessness, very good moisture absorption, non-toxicity and perfect filtering function. A systematic analysis on the surface of cellulose diacetate filament was made to compare the effect of different fiber fly quantity on cellulose diacetate filament. Scanning electron microscopy, Atomic Force Microscopy and X-ray Photoelectron Spectroscopy were used to characterize the morphology and elements on the surface of cellulose diacetate filament. In addition, specific surface area and surface hydrophilicity of cellulose diacetate filament were also tested. It was found that the quantity of exfoliated fiber fly had a significant effect on the surface properties of filaments. With the fiber fly quantity increasing, the contact angle of filaments decreased, and the 0/C value increased, leading to the improvement of surface hydrophilicity. The gel particles dispersed in the filaments leaded to the protuberance formation on the filament surface. The surface roughness of filaments enhanced when the fiber fly quantity increased. The specific surface area test also showed that there was an increasing trend in the specific surface area of filaments with higher fiber fly content. Note de contenu : - Morphologies of cellulose diacetate filaments
- Analysis of the element on surface
- Analysis of surface energyPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19274
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Code-barres Cote Support Localisation Section Disponibilité 15475 - Périodique Bibliothèque principale Documentaires Disponible Effect of different fiber fly quantity on surface of cellulose diacetate filament / Pengxiang Li in CHEMICAL FIBERS INTERNATIONAL, (10/2014)
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