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Emulsion polymerization & its applications : a brief review / Harish S. Ajmera in PAINTINDIA, Vol. LXXII, N° 4 (04/2022)
[article]
Titre : Emulsion polymerization & its applications : a brief review Type de document : texte imprimé Auteurs : Harish S. Ajmera, Auteur ; Ritesh A. Bhavsar, Auteur Année de publication : 2022 Article en page(s) : p. 55-67 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Encapsulation
Formation de film
Opacifiants
Polymères en émulsion
Polymères organiques-inorganiques
Polymérisation en émulsion
Revêtements en phase aqueuseIndex. décimale : 667.9 Revêtements et enduits Résumé : Emulsion polymer is one of the important components of water based paints which provides mechanical, chemical and durability properties to it. This article provides a general overview on the emulsion polymers, techniques to prepare and their end applications. An introduction to the basic concepts of emulsion polymers was discussed, followed by a description of the various production processes and characterization methods. The classes of emulsion polymers were surveyed, and the commercial technologies and potential future uses discussed. The main objective of this review article is to describe the use of latex coatings and their futuristic technologies for the development of next generation waterbased coatings. Note de contenu : - GENERAL ASPECT : Latex composition - Latex preparation - Latex characterization
- USE OF EMULSION POLYMERIZATION FOR DEVELOPING SPECIALTY PRODUCTS : A. Encapsulation of organic, inorganic, liquid/oil material - B. Organic-inorganic hybrid emulsion - C. Opaque emulsion - D. Bitumen emulsion
- FUTURE TECHNOLOGIES IN EMULSION POLYMERS : 1. Surfactant free emulsion - Bio-based emulsion - Hollow film forming opacifier - Antimicrobial emulsion - Colored emulsionEn ligne : https://drive.google.com/file/d/1TbLQ0glGlnlo318ew2ps54PKBvidgQlr/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37746
in PAINTINDIA > Vol. LXXII, N° 4 (04/2022) . - p. 55-67[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23453 - Périodique Bibliothèque principale Documentaires Disponible Insights into functional polymer-based organic-inorganic nanocomposites as leather finishes / Qianqian Fan in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 1 (Année 2019)
[article]
Titre : Insights into functional polymer-based organic-inorganic nanocomposites as leather finishes Type de document : texte imprimé Auteurs : Qianqian Fan, Auteur ; Ma Jianzhong, Auteur ; Qunna Xu, Auteur Année de publication : 2019 Article en page(s) : 10 p. Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antibactériens
Cuirs et peaux -- Finition
Matériaux -- Propriétés fonctionnelles
Nanoparticules
Polymères organiques-inorganiques
Résistance à l'humidité:Résistance à l'eau
Revêtement auto-nettoyant
Sol-gel, ProcédéIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Nowadays, the increasing demands from consumer challenges the traditional leather products. Traditional polymer leather finishes gradually lose their dominant position in the market. To address this issue, recent research effort has been devoted to developing polymer-based organic-inorganic nanocomposite leather finishes due to their various functional properties including antibacterial, self-cleaning and water-resistant property. In this review, we provide a comprehensive overview of synthesis of polymer-based organic-inorganic nanocomposites and their application as functional leather finishes. With the perspective of their properties and current challenges, an outlook in the future development about crafting functional and high-quality leather finishes are further proposed. Note de contenu : - SYNTHESIS OF POLYMER-BASED ORGANIC-INORGANIC NANOCOMPOSITES : Sol-gel processing - Blending - In situ method
- APPLICATION OF POLYMER-BASED ORGANIC-INORGANIC NANOCOMPOSITES AS FUNCTIONAL LEATHER FINISHES : Antibacterial leather finishes - Water resistant leather finishes - Self-cleaning leather finishes - Other functional leather finishesDOI : https://doi.org/10.1186/s42825-019-0005-9 En ligne : https://link.springer.com/content/pdf/10.1186/s42825-019-0005-9.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36948
in JOURNAL OF LEATHER SCIENCE AND ENGINEERING > Vol. 1 (Année 2019) . - 10 p.[article]Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire Preparation and antiaging performance of urushiol-titanium polymer/a-zirconium phosphate composite coatings / Guocai Zheng in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 2 (03/2023)
[article]
Titre : Preparation and antiaging performance of urushiol-titanium polymer/a-zirconium phosphate composite coatings Type de document : texte imprimé Auteurs : Guocai Zheng, Auteur ; Pingfei Wu, Auteur ; Xiaoxiao Zheng, Auteur ; Fencai Lin, Auteur ; Qi Lin, Auteur ; Yanlian Xu, Auteur Année de publication : 2023 Article en page(s) : p. 535-543 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosion
Caractérisation
Composites
Essais accélérés (technologie)
Phosphate de zirconium
Polymères organiques-inorganiques
Revêtements -- Propriétés mécaniques
Revêtements organiques
Revêtements protecteursIndex. décimale : 667.9 Revêtements et enduits Résumé : Anti-corrosion coatings often fail due to aging effects. Therefore, taking advantage of the positive effects of multilayer structure of a-zirconium phosphate (α-ZrP) on the anti-aging properties of coatings, organic–inorganic composite materials based on a-ZrP were synthesized. Firstly, a-ZrP was synthesized by a hydrofluoric acid precipitation method. Then, CT-ZrP was prepared by a-ZrP, pre-intercalated successively with cholamine and cetyltrimethylammonium bromide (CTAB). The synthesized CT-ZrP was then used for synthesizing urushiol-titanium polymer/ZrP composite coatings (M-ZrP) through intercalation. The results of XRD, TEM, and FTIR proved the successful intercalation of α-ZrP and the loss of layering M-ZrP composite coatings in the process of exfoliation. TG results showed that the thermal stability of M-ZrP3 (3 wt% CT-ZrP) was higher than that of urushiol-titanium polymer (UTP). After 1000 h of accelerated aging, 3 wt% of CT-ZrP could significantly improve the anti-aging property of the UTP coating, and the maximum rate of gloss loss was the lowest (5.9%). Note de contenu : - INTRODUCTION : Experimental - Preparation of a-ZrP - Preparation of CA-ZrP - Preparation of CT-ZrP - Preparation of M-ZrP - General characterization - Mechanical measurement - Accelerated aging test
- RESULTS AND DISCUSSION : Morphological and structural analyses - Morphology of M-ZrP3 nanocomposite - Thermal stabilities of nanocomposite coatings - Antiaging performance of nanocomposite coatings - Mechanical properties of nanocomposite coatings
- Table 1 : TGA data of UTP and M-ZrP3
- Table 2 : Elemental composition of M-ZrP3 coating before accelerated aging
- Table 3 : Elemental composition of M-ZrP3 coating after accelerated aging
- Table 4 : Mechanical properties of coatingsDOI : https://doi.org/10.1007/s11998-022-00686-y En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00686-y.pdf?pdf=button Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39297
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 2 (03/2023) . - p. 535-543[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24056 - Périodique Bibliothèque principale Documentaires Disponible Preparation and characterization of polydimethylsiloxane containing cyano/phenyl groups for potential use in sorptive extraction / Miguel Angel Ávila-Martínez in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 4 (07/2021)
[article]
Titre : Preparation and characterization of polydimethylsiloxane containing cyano/phenyl groups for potential use in sorptive extraction Type de document : texte imprimé Auteurs : Miguel Angel Ávila-Martínez, Auteur ; Yamile Pérez-Padilla, Auteur ; Salvador Medina-Peralta, Auteur ; Alejandro Ávila-Ortega, Auteur ; David Muñoz-Rodríguez, Auteur Année de publication : 2021 Article en page(s) : p. 1087-1094 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Absorption
Adsorption
Caractérisation
Composés organiques
Extraction (chimie)
PolydiméthylsiloxaneLe polydiméthylsiloxane —[O-Si(CH3)2]n—, ou poly(diméthylsiloxane) selon la nomenclature systématique, communément appelé PDMS ou diméthicone, est un polymère organominéral de la famille des siloxanes souvent présent dans les shampoings. On l'y ajoute pour augmenter le volume des cheveux mais il peut également aller boucher les pores du cuir chevelu et rendre les cheveux gras. C'est une des raisons pour lesquelles se laver les cheveux tous les jours est très déconseillé avec un shampooing contenant des silicones.
Il existe également de l'amodiméthicone, qui est un dérivé du diméthicone.
Le polydiméthylsiloxane est un additif alimentaire (E900), utilisé comme antimoussant dans les boissons (Coca-Cola BlāK).
La chaîne de poly(diméthylsiloxane) forme également la structure de base des huiles et des caoutchoucs silicones.
Polymères à silane modifié
Polymères organiques-inorganiques
Revêtements organiques
Sol-gel, Procédé
SulfonamidesIndex. décimale : 667.9 Revêtements et enduits Résumé : A coating of poly(dimethylsiloxane) (PDMS) on a stir bar is typically used for sorptive extraction and preconcentration of nonpolar organic analytes from aqueous matrices. Here, we used sol–gel to synthesize three new coatings based on hydroxy-terminated PDMS crosslinked with 3-cyanopropyltriethoxysilane (CN) and phenyltriethoxysilane (PH) with three molar ratios of CN:PH (2:1, 1:1, and 1:2). The water contact angle of the coatings was below 90°. Cyanopropyl and phenyl groups were identified by infrared spectroscopy. The coatings were thermally stable up to 200°C. Also, they were stable to organic solvents and aqueous solutions at different pH. Glass stir bars were covered with the coatings to explore its potential application in stir-bar sorptive extraction. The test included polar antibiotics (sulfathiazole, sulfamethoxazole, trimethoprim, and chloramphenicol) dissolved in spiked water (pH 4.5) and organic solvent. Different experimental conditions were used to explore the capacity of the coatings to extract and preconcentrate the antibiotics. Unsatisfactory results of enrichment effect were obtained in aqueous solutions of antibiotics. In organic medium, the antibiotics were extracted and preconcentrated with the three coatings. Note de contenu : - MATERIALS AND METHODS : Reagents and dissolutions - Preparation of stir bars with hybrid coating - Physicochemical characterization of the coatings - SBSE tests with coated stir bars - Experimental design and statistical analysis - Chromatographic analysis
- RESULTS AND DISCUSSION : Sol–gel synthesis of coatings - Characterization of hybrid coatings - Stability of coatings against solvents - Stability against pH conditions - Determination of water contact angle - Thermogravimetric analysis - SBSE tests with coated stir bars
- Table 1 : Reagent composition for the sol–gel preparation of the three in-house coatings
- Table 2 : Levels and factors used in 24 experimental design with five central points to evaluate the extraction of antibiotics by SBSE
- Table 3 Preconcentration factors for antibiotics (0 < log10KOW < 1.2) in SBSE extracts obtained in spiked isooctane. Extraction : 10 mL isooctane (spiked with 1 mg L−1), 250 rpm and 120 min. Desorption : vortex assisted, 40 min, 500 µL of 40% of MeOH–60% aqueous formic buffer solution (0.10% v/v, pH 4.5)DOI : https://doi.org/10.1007/s11998-021-00462-4 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00462-4.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36215
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 4 (07/2021) . - p. 1087-1094[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22969 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Silicon and nitrogen : Polysilazanes produce thin-film easy-to-clean and corrosive finishes Type de document : texte imprimé Auteurs : Vu Can, Auteur ; Stefan Brand, Auteur ; Frank Osterod, Auteur Année de publication : 2008 Article en page(s) : p. 38-43 Note générale : Notes bibliogr. Langues : Anglais (eng) Catégories : Anticorrosifs
Anticorrosion
Polymères organiques-inorganiques
Polysilazanes
Revêtements anti-graffitis
Revêtements protecteursIndex. décimale : 667.9 Revêtements et enduits Résumé : A new class of inorganic or hybrid organic/inorganic polymers called polysilazanes with silicon-nitrogen -(Si-N)- linkages inthe polymer backbone has been developed. Upon pyrolysis they form ceramics, but even curing at normal stoving or ambient temperatures can provide high performance coatings. Their use to protect against graffiti, corrosion and weathering is reviewed. En ligne : https://drive.google.com/file/d/1wuVixTWf9cs9i7y0CoC2V_4h42OaRy8u/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2425
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 02/2008 (02/2008) . - p. 38-43[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 009648 - Périodique Bibliothèque principale Documentaires Disponible