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Stearoyl piperidinium chloride and palmitoyl piperidinium chloride surfactants : synthesis, characterization and application as capping agent in the microemulsion synthesis of MnS nanoparticles / Mohammad Edrissi in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 49, N° 4 (07-08/2012)
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Titre : Stearoyl piperidinium chloride and palmitoyl piperidinium chloride surfactants : synthesis, characterization and application as capping agent in the microemulsion synthesis of MnS nanoparticles Type de document : texte imprimé Auteurs : Mohammad Edrissi, Auteur ; Meysam Soleymani, Auteur Année de publication : 2012 Article en page(s) : p. 335-338 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Manganèse
Microémulsions
Nanoparticules
Pipéridines
Produits coiffants
SurfactantsIndex. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : In this study palmitoyl piperidinium chloride and stearoyl piperidinium chloride surfactants were synthesized by two steps. The synthesized products in each step were analyzed by Nuclear Magnetic Resonance (NMR), Fourier Transform Infrared Spectrometry (FTIR), and elemental analysis. The properties of two surfactants were investigated, including surface tension (γ), critical micelle concentration (CMC), effectiveness (Ï€cmc), efficiency (pC20), and anti-static properties. It was found that the number of methylene groups (-CH2-) in the hydrophobic chain has important effect on the properties of surfactants. Increasing the methylene groups enhances the ability of surfactant to act as effective surface tension agents in many applications. Furthermore, stearoyl piperidinium chloride showed that it can be used as a good capping agent in the microemulsion synthesis of MnS nanoparticles. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15554
in TENSIDE, SURFACTANTS, DETERGENTS > Vol. 49, N° 4 (07-08/2012) . - p. 335-338[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14042 - Périodique Bibliothèque principale Documentaires Disponible A step away from petrochemicals / Shikhin Nadkarni in EUROPEAN COATINGS JOURNAL (ECJ), N° 2 (02/2016)
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Titre : A step away from petrochemicals : Modifying Damar Batu to synthesise alkyd and polyurethane systems Type de document : texte imprimé Auteurs : Shikhin Nadkarni, Auteur ; D. Barde, Auteur ; J. M. Nadkarni, Auteur Année de publication : 2016 Article en page(s) : p. 36-40 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anticorrosion
Biomatériaux
Biopolymères
Caractérisation
Chimie analytique
Liants
Polyalkydes
Polyuréthanes
Revêtements:PeintureIndex. décimale : 667.9 Revêtements et enduits Résumé : Damar Batu, a natural resin, was studied analitycally to determine its physical and chemical characteristics. The resin was then modified so that it could be used to synthesise alkyds and polyurethanes. Paints based on these binders were found to offer anticorrosive properties at least comparable to the rosinated alkyd formulation commercially used in India. Note de contenu : - Sources and uses of damar batu
- The nature and composition of alkyds and polyurethanes
- Chemical analysis experiments summarised
- Resin is modified to increase functionality
- Determining the functionality of modified DB
- Alkyd and polyurethane systems are synthesised
- Corrosion performance matches commercial products
- Further development should lead to wider use
- FIGURES : 1. Conversion of phenolic hydroxyls to alcoholic hydroxyls - 2. Reaction of modified damar batu with monofunctional soya fatty acid - 3. Reaction of modified damar batu with difunctional adipic acid - 4. Corrosion test results with standard product and paint based on modified damar batu - 5. Humidity test results with standard products and paint based on modified damar batu
- TABLES : 1. Physical and chemical characteristics of damar batu resin - 2. Comparison of damar batu based polyurethane red oxide primer with standard rosinated alkyd red oxide primerEn ligne : https://drive.google.com/file/d/1A52GnAS45XcTAmCoOSlYZMCsepU1KBk3/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25536
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 2 (02/2016) . - p. 36-40[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17843 - Périodique Bibliothèque principale Documentaires Disponible Stress development and film formation in multiphase composite latexes / Kyle Price in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 11, N° 6 (11/2014)
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Titre : Stress development and film formation in multiphase composite latexes Type de document : texte imprimé Auteurs : Kyle Price, Auteur ; Wenjun Wu, Auteur ; Kurt Wood, Auteur ; Stephanie Kong, Auteur ; Alon McCormick, Auteur ; Lorraine F. Francis, Auteur Année de publication : 2014 Article en page(s) : p. 827-839 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Analyse des données
Caractérisation
Composites
Core-Shell
Cryotechnique
Evaluation
Formation de film
Latex
Liants
Microscopie électronique à balayage
Morphologie (matériaux)
Particules -- Morphologie
Revêtement -- Séchage:Peinture -- SéchageIndex. décimale : 667.9 Revêtements et enduits Résumé : Designed appropriately, multiphase soft-core/hard-shell latex particles can achieve film formation without the addition of a coalescing aid, while preserving sufficient film hardness. Achieving optimal performance in these materials requires an under-standing of how particle morphology affects film formation and stress development in the film. In this study, soft-core/hard-shell latex particles with different shell ratios, core and shell glass transition temperatures(Tgs), and particle sizes (63–177 nm) were synthesized using a two-stage emulsion polymerization. The film formation behavior of the composite particles was investigated with cryogenic scanning electron micro-scopy, atomic force microscopy, and measurements of the minimum film formation temperature (MFFT). Results show that film formation was enhanced for particles with thinner hard shells, smaller particle size, and a smaller difference in Tg between the core and shell polymers. For example, the MFFT decreased and the particle deformation increased for particles with thinner shells and smaller article sizes. Stress development during drying was characterized using a cantilever beam bending technique. A walled cantilever design was used to monitor stress development without the complication of a lateral drying front. The film formation behavior and stress development correlated well with practical paint properties like scrub resistance and gloss. Note de contenu : - EXPERIMENTAL : Binder evaluation - Paint evaluation - Block resistance - Scrub resistance - Data analysis using JMP - Stress measurement - Characterization methods
- RESULTS AND DISCUSSION : Particle morphology - Film formation - Stress development - Paint performanceDOI : 10.1007/s11998-014-9606-7 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-014-9606-7.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22307
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 11, N° 6 (11/2014) . - p. 827-839[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16659 - Périodique Bibliothèque principale Documentaires Disponible Stress relaxation studies in polyester filaments / Suhas Digmabar Asagekar in CHEMICAL FIBERS INTERNATIONAL, Vol. 71, N° 4 (12/2021)
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Titre : Stress relaxation studies in polyester filaments Type de document : texte imprimé Auteurs : Suhas Digmabar Asagekar, Auteur ; Pooja Katkar, Auteur Année de publication : 2021 Article en page(s) : p. 176-178 Langues : Anglais (eng) Catégories : Caractérisation
Etirage (textile)1. Procédé par lequel on diminue ou augmente la masse surfacique d'une nappe, ou la masse linéique d'un ruban ou d'une mèche.
2. Etirage à chaud ou à froid des filaments continus dans le but d'orienter la structure cristalline des fibres pour en améliorer la ténacité.
Fibres polyesters
Fibres textiles -- Propriétés mécaniques
Fil partiellement orienté
FilamentsFibre de longueur infinie ou extrême comme celle qu'on trouve dans la soie à l'état naturel. Les fibres manufacturées sont extrudées en filaments qui sont transformés en fils continus, en fibres courtes ou en câbles.
Fixation (chimie)
Relaxation des contraintes
Traction (mécanique)Index. décimale : 677.47 Non cellulosiques : Nylon, acryliques, polyesters, vinyles Résumé : The stress relaxation characteristic of PET filament yarn was studied. The partially oriented polyester filament yarn (PET POY) was subjected to draw ratios viz. 1.4, 1.6 and 1.8 and then was heat set at temperatures 140, 160 and 180°C. It was observed that the relaxation values were reduced with increase in draw ratios. It was also observed that the relaxation values were decreased with increase in heat setting temperature. The spring constants and relaxation constants were calculated by assuming 3 element Zener model. The calculated values of spring constants were found to increase with increase in draw ratio. The relaxation constants were found to vary from 1.99-5.38 seconds for all the cases. The lovv values of relaxation constants indicate that for all cases the amorphous regions are more mobile which leads to speedy rearrangement of molecules. Note de contenu : - Material
- Methods : The drawing and heat setting - Characterization of filaments
- Theory
- Results and discussion : Linear density - Tensile properties of filaments - Stress relaxation - Constants of model
- Table 1 : Linear density values in denier units
- Table 2 : Tensile properties of PET filament yarns
- Table Stress relaxation (%) of heat set PET filamentsEn ligne : https://drive.google.com/file/d/1apIXYpbwI_pYLm4qA9duTb-Uv3kWiN7h/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36959
in CHEMICAL FIBERS INTERNATIONAL > Vol. 71, N° 4 (12/2021) . - p. 176-178[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23116 - Périodique Bibliothèque principale Documentaires Disponible Stretch blow molding of mineral filled PET / N. Billon in INTERNATIONAL POLYMER PROCESSING, Vol. XXX, N° 4 (08/2015)
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Titre : Stretch blow molding of mineral filled PET Type de document : texte imprimé Auteurs : N. Billon, Auteur ; Jean-Marc Haudin, Auteur ; C. Vallot, Auteur ; C. Babin, Auteur Année de publication : 2015 Article en page(s) : p. 487-499 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse thermique
Calorimétrie
Caractérisation
Charges (matériaux)
Dioxyde de titane
Matières plastiques -- Moulage par injection-étirage-soufflage
Microscopie électronique en transmission
Polyéthylène téréphtalate
Thermométrie
Traction (mécanique)
ViscoélasticitéIndex. décimale : 668.4 Plastiques, vinyles Résumé : Injection stretch blow molding (ISBM) is a two-step process that was designed and optimized mainly for unfilled PET resins. The present study focuses on stretch blow molding of a PET filled with different amounts of sub-micronic mineral fillers. The influence of fillers is analyzed thanks to DSC, DMA, tensile testing and processing in different configurations on a prototype apparatus and an industrial machine. It is demonstrated that fillers enhance crystallization kinetics, which leads to a reduction of the processing range. Differences in strain hardening induced by fillers make it necessary to adjust blowing temperature. However, the main effect occurs during the heating phase of the preforms. Temperature within a filled preform is much less homogeneous than in neat PET, making the temperature gradient totally different if the heating protocol is kept unchanged. Once the heating of filled preforms is controlled to reach equivalent temperature gradients, blowing is possible and rather equivalent to that of pure PET. Note de contenu : - EXPERIMENTAL : Materials - Processing - Thermal measurements - Transmission electron microscopy - Calorimetry - Viscoelastic measurements - Tensile testing
- RESULTS AND DISCUSSION : MATERIAL CHARACTERIZATION : Particle distribution in the preforms - DSC measurements - Viscoelastic properties - Large- strain behavior - Synthesis
- RESULTS AND DISCUSSION : PROCESSING : Particle distribution in the processed parts - Preliminary results on the prototype machine - Optimizing conditions in a free-blowing configuration - Use of stretching rod - Results on the industrial machineDOI : 10.3139/217.3066 En ligne : https://drive.google.com/file/d/1K7LFlqLAYCjsGOJ4dYi_g17-ocRHN8wI/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24858
in INTERNATIONAL POLYMER PROCESSING > Vol. XXX, N° 4 (08/2015) . - p. 487-499[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17359 - Périodique Bibliothèque principale Documentaires Disponible Stretchable strain sensors based on conductive coating cracks with improved interfacial adhesion by wet phase separation treatment / Wei Luo in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 5 (09/2020)
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PermalinkStructural characterisation and coloration of ligno-cellulose and protein fibre-blended structures / Manik Bhowmick in COLORATION TECHNOLOGY, Vol. 139, N° 6 (12/2023)
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PermalinkStructure and function of wool keratin polypeptide extracted by superheated water / Ting Wu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 10 (10/2022)
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PermalinkStructure and properties of flame-retardant lyocell fibers / Shengjie Chen in CHEMICAL FIBERS INTERNATIONAL, Vol. 70, N° 1 (03/2020)
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PermalinkStructure and properties of flame-retardant lyocell fibers / Shengjie Chen in CHEMICAL FIBERS INTERNATIONAL, Vol. 70, N° 4 (12/2020)
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PermalinkStructure and properties of the cotton-like polyethylene terephthalate fiber / Ni Wang in CHEMICAL FIBERS INTERNATIONAL, Vol. 65, N° 1 (03/2015)
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PermalinkStructure of vinyl polysiloxane on properties of polyacrylates filmm and its pigment printing application / Qipeng Zhang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 4 (07/2020)
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PermalinkStudies of ethiopian sheepskins as an opportunity for value addition, part II : optimization and characterization of wanke upper and garment leather / H. Mohammed in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIX, N° 5 (05/2014)
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PermalinkStudies on chamois leather - Tanning using plant oil / S. Hari Krishnan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 89, N° 6 (11-12/2005)
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PermalinkStudies on characterization of high performance coatings based on polymer alloys of interpenetrating polymer networks / T. Anandaraj in PAINTINDIA, Vol. LI, N° 6 (06/2001)
PermalinkStudies on ethiopian sheep skins as an opportunity for value addition part I : histological, microscopic and chemical characterization of abyssinian and wanke sheepskins / H. Mohammed in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIX, N° 3 (03/2014)
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PermalinkStudies on quinoline type dyes and their characterisation studies on acrylic fabric / Pik-Ling Lam in COLORATION TECHNOLOGY, Vol. 128, N° 3 (2012)
PermalinkStudies on the development of benzoyl peroxide catalysed rapid oil tanning using linseed oil / Bindia Sahu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVI, N° 7 (07/2021)
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PermalinkStudies on the effect of cross-linker (HMMM) on aliphatic urethane oils synthesized using enzymatically modified castor oil / Vilas D. Athawale in PAINTINDIA, Vol. LV, N° 11 (11/2005)
PermalinkStudies on the effect of polyurethane finishing on the physico-mechanical properties of leather / Rajesh Kumar in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. N° 71 (Année 1987)
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