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Starch based polyurethane foam-review / Ravindra V. Gadhave in PAINTINDIA, Vol. LXVIII, N° 9 (09/2018)
[article]
Titre : Starch based polyurethane foam-review Type de document : texte imprimé Auteurs : Ravindra V. Gadhave, Auteur ; Prakash A. Mahanwar, Auteur ; Pradeep T. Gadekar Année de publication : 2018 Article en page(s) : p. 64-65 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Amidons
Biodégradation
Biopolymères
Mousse (chimie)
Polyols
PolyuréthanesIndex. décimale : 667.9 Revêtements et enduits Résumé : Increasing global energy crisis of petroleum resources has shifted focus of chemical industries to look for alternative raw material resources. The main focus of raw materials in polyurethane system, such as polyol i.e. based on petroleum and natural gas, would be gradually replaced by those from renewable sources. Starch is a relatively inexpensive and renewable product from abundant plants natural sources like starch is used during manufacturing of polyurethane (PU) foam extensively from the last decades and replaced petrochemical based PU foam due to their lower environmental few impact, easy availability, lower cost and biodegradability. Starch which is an abundant but underutilized component of cellulosic biomaterials constitutes a rich source of polyol and being considered for the production of bio-degradable PU foam. Lignin was mainly used for production of degradable polyurethane foams, followed by elastomers as well as wood adhesives. For this review paper we will focus on the progress of research in starch based polyurethane materials for foam application. Note de contenu : - INTRODUCTION : Starch - Polyurethane - Polyurethane foams
- STARCH BASED POLYURETHANE FOAMEn ligne : https://drive.google.com/file/d/1UhUz9WOoHutWcwXCfLoUn37AbHRN8cUc/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31442
in PAINTINDIA > Vol. LXVIII, N° 9 (09/2018) . - p. 64-65[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20476 - Périodique Bibliothèque principale Documentaires Disponible Structural elucidation and surfactant properties of rhamnolipids synthesized by pseudomonas aeruginosa (ATCC 10145) on sweet water as carbon source and stabilization effect on foam produced by sodium lauryl sulfate / S. D. Wadekar in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 48, N° 4/2011 (07-08/2011)
[article]
Titre : Structural elucidation and surfactant properties of rhamnolipids synthesized by pseudomonas aeruginosa (ATCC 10145) on sweet water as carbon source and stabilization effect on foam produced by sodium lauryl sulfate Type de document : texte imprimé Auteurs : S. D. Wadekar, Auteur ; S. V. Patil, Auteur ; S. B. Kale, Auteur ; A. M. Lali, Auteur ; D. N. Bhowmick, Auteur ; Ashish Pratap Singh, Auteur Année de publication : 2011 Article en page(s) : p. 286-292 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Biosurfactants
Chromatographie en phase liquide
Eau douce
Emulsions -- Stabilité
Mousse (chimie)
Pseudomonas aeruginosa
Spectrométrie de masseIndex. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : The interest in biosurfactant has increased considerably due to their large potential for industrial applications. Rhamnolipid is the simplest class of biosurfactants with well defined structure. The main obstacle in commercialization of biosurfactant especially rhamnolipids is the higher cost of the production that can be reduced by use of inexpensive carbon substrates like glycerol that is readily available from commercial fat-splitting process in the form of sweet water (up to 20% w/v) at very low cost. The composition and structure of various components in crude rhamnolipids synthesized by of Pseudomonas aeruginosa (ATCC 10145) on sweet water, were determined using TLC, HPLC and LC\MS. The crude product showed two distinct components having structure Rha2C10C10 and Rha2C10C12 at 85.45 wt.% and 14.55 wt.% respectively. The Rha2C10C10 was more efficient and effective in surface tension reduction up to 23.5 mN/m than other components. Crude rhamnolipids showed better emulsifying power than its individual components. The crude rhamnolipids showed better foam stability than sodium lauryl sulfate (SLS) at lower concentrations (0.05 to 0.002% w/v). It also enhanced and stabilized the foam produced by SLS at 0.01 to 0.025% of rhamnolipids. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11946
in TENSIDE, SURFACTANTS, DETERGENTS > Vol. 48, N° 4/2011 (07-08/2011) . - p. 286-292[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 013232 - Périodique Bibliothèque principale Documentaires Disponible Sulphonated methyl ester - a promising surfactant for detergency in hard water conditions / Yee Seng Lim in SOFW JOURNAL, Vol. 143, N° 1-2 (01-02/2017)
[article]
Titre : Sulphonated methyl ester - a promising surfactant for detergency in hard water conditions Type de document : texte imprimé Auteurs : Yee Seng Lim, Auteur ; Jordan Petkov, Auteur ; Hui Xu, Auteur ; Rumyana Stanimirov, Auteur Année de publication : 2017 Article en page(s) : p. 24-30 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Détergents
Eau dure
Esters méthyliques sulfonés
Krafft, Température de
Mélanges (chimie)
Mesure
Mousse (chimie)
SurfactantsIndex. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : We report results on the physical phase behavior of sulphonated methyl esters in different water hardness conditions. We also compare its foam performance against a number of other surfactants in correlation with their Krafft points at different levels of water hardness. Whilst SME is slightly behind in terms of solubility in deionized water, it gains ground as the level of water hardness goes up and is significantly better, when certain mixtures are used. The best results are observed at 1:1 ratio for Krafft point as well as for foam performance. The results suggest potential applications for these relatively new palm oil-derived surfactants, namely in regions with high levels of water hardness. Note de contenu : - MATERIALS AND METHODS : Materials - Determination of Krafft temperature, Tk - Foaming measurements
- RESULTS AND DISCUSSIONS : Krafft point measurement - Foaming performance of single surfactants - Foaming performance for mixtures of surfactantsEn ligne : https://drive.google.com/file/d/1o6dGIG_saG5-tscwTzyRS5izNaY_l_Rg/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28133
in SOFW JOURNAL > Vol. 143, N° 1-2 (01-02/2017) . - p. 24-30[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 18766 - Périodique Bibliothèque principale Documentaires Disponible Surfactant-free oil-in-oil emulsion-templating of polyimide aerogel foams / Erin Farrell in INTERNATIONAL POLYMER PROCESSING, Vol. 37, N° 4 (2022)
[article]
Titre : Surfactant-free oil-in-oil emulsion-templating of polyimide aerogel foams Type de document : texte imprimé Auteurs : Erin Farrell, Auteur ; Sadhan C. Jana, Auteur Année de publication : 2022 Article en page(s) : p. 427-441 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Aérogels
Caractérisation
Emulsions
Emulsions -- Stabilité
Gélification
Matériaux mésoporeux
Matériaux poreux
Modèles mathématiques
Mousse (chimie)
PolyimidesIndex. décimale : 668.4 Plastiques, vinyles Résumé : A surfactant-free oil-in-oil emulsion-templating method is presented for fabrication of monolithic polyimide aerogel foams using monomer systems that produce fast sol–gel transition. An aerogel foam is a high porosity (∼90%) material with coexisting meso- and macropores inherent to aerogels with externally introduced micrometer size open cells (macrovoids) that are reminiscent of foams. The macrovoids are introduced in polyimide sol using surfactant-free emulsion-templating of droplets of an immiscible liquid that are stabilized against coalescence by fast sol–gel transition. Three immiscible liquids – cyclohexane, n-heptane, and silicone oil – are considered in this work for surfactant-free emulsion-templating. The aerogel foam monoliths, recovered by supercritical drying, exhibit smaller size macrovoids when n-heptane and cyclohexane are used as emulsion-templating liquid, while the overall porosity and the bulk density show weak dependence on the emulsion-templating liquid. Note de contenu : - EXPERIMENTAL SECTION : Materials - Characterization
- RESULTS AND DISCUSSION : Emulsion stability - Gel times - Aerogel foam materials - BET surface area - Macrovoid and pore architecture
- Table 1 : Lists several properties of the solvents used.
- Table 2 : Interfacial tension values without surfactant
- Table 3 : Mean, median, maximum, and minimum droplet diameter in surfactant-free emulsions in N,N-dimethylformamide
- Table 4 : Droplet distribution data and mean diameter in micrometer in each size range
- Table 5 : Emulsion separation times and creaming rates in polyimide so
- Table 6 : Bulk density, shrinkage, porosity, and percent pores in macro- and mesopore range of emulsion-templated polyimide aerogel foams
- Table 7 : BET surface areaDOI : https://doi.org/10.1515/ipp-2022-4248 En ligne : https://drive.google.com/file/d/1_xRc5_bNKiT5U2NT_gxrCiSs-qCRpbw0/view?usp=shari [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37918
in INTERNATIONAL POLYMER PROCESSING > Vol. 37, N° 4 (2022) . - p. 427-441[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23739 - Périodique Bibliothèque principale Documentaires Disponible Surfactants in pressure sensitive adhesives / Virendra V. Shah in ADHESIVE TECHNOLOGY, Vol. 15, N° 3 (09/1998)
[article]
Titre : Surfactants in pressure sensitive adhesives Type de document : texte imprimé Auteurs : Virendra V. Shah, Auteur ; Donald A. Werkema, Auteur Année de publication : 1998 Article en page(s) : p. 15-19 Langues : Anglais (eng) Catégories : Adhésifs sensibles à la pression
Diol acétylénique
Essais (technologie)
Essais d'adhésion
Formulation (Génie chimique)
Mouillage (chimie des surfaces)
Mousse (chimie)
Surfactants
Tension superficielle
Tétraméthyl decyne diolIndex. décimale : 668.3 Adhésifs et produits semblables Résumé : The proper choice and level of surfactant is critical to the adhesive formulator to provide the required coating characteristics without excessive foaming. Note de contenu : - Surface tension
- Acetylenic diol surfactant chemistry
- Hydrophilic/hydrophobic structure
- Surfactants for pressure sensitive and laminating adhesives
- Formulations
- Test methods
- Results
- Substrate wetting
- Foam control
- Adhesive system formulations
- Adhesive properties
- FDA compliances
- Fig. 1 : Tetramethyldecynediol
- Fig. 2 : PSA foam generation
- Fig. 3 : 24 hours dry PVC/cloth peel strength
- Fig. 4 : Wet PVC/cloth peel strength
- Table 1 : Surface tension performance of various surfactant chemistries (0.1 % concentration of active material in demi water)
- Table 2 : Effect of structures ABA vs BAB vs AB (A = hydrophobe) ; B = hydrophile)
- Table 3 : effect of branched chain compared with linear hydrophobe (0.1 % concentration of active in demi water)
- Table 4 : Adhesive formulation properties as a function of coater type
- Table 5 : Pressure sensitive adhesive formulation
- Table 6 : Wet laminating adhesive formulationPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37381
in ADHESIVE TECHNOLOGY > Vol. 15, N° 3 (09/1998) . - p. 15-19[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001980 - Périodique Bibliothèque principale Documentaires Disponible PermalinkSynthesis, structural properties and applications of gemini surfactants : a review / P. Tyagi in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 46, N° 6/2009 (11-12/2009)
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PermalinkTroisième congrès mondial de l'émulsion / Troisième congrès mondial de l'émulsion (24 - 27 sept. 2002; Lyon) / Paris : Editions de santé (2002)
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