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Integrated life-cycle design of coatings on exterior wood / L. Strömberg in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 87, B3 (09/2004)
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Titre : Integrated life-cycle design of coatings on exterior wood : Part 2: Life-cycle assessment Type de document : texte imprimé Auteurs : L. Strömberg, Auteur Année de publication : 2004 Article en page(s) : p. 211-220 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Applications extérieures
Bois -- Revêtements protecteurs
Caractérisation
Durée de vie (Ingénierie)
Fonction de pondération
Normalisation
Polyacryliques
Polyalkydes
Revêtement en phase solvant
Revêtements en phase aqueuse
TeintureIndex. décimale : 667.9 Revêtements et enduits Résumé : This study has shown that the environmental impact from the various studied coatings are the dependent criteria on their service lives. The dependence of these criteria has been studied with the help of the integrated design model, developed in this study especially for coatings on exterior wood.
The integrated design for the overall performance showed that the water-borne acrylic coating and the water-borne acrylic stain are the best choice as regards the environmental impact and durability of the coatings.
The discussed surface coating systems were a solvent-borne alkyd coating, a water-borne acrylic coating, a water-borne crylic stain, a solvent-borne alkyd stain and alkyd oil.Note de contenu : - Characterisation
- Normalisation
- Weighting
- Basis for comparisons
- Life-cycle assessment of coatings on exterior wood
- Life-cycle inventory analysis
- Table 1 : The calculated and estimated service lives for the tested coatings (from part 1 of this paper)
- Table 2 : The results of classification for the whole life cycle of 1m2 coating on exterior wood panel over a period of 50 years
- Table 3 : The calculated annual environmental burdens of the coating systemsDOI : 10.1007/BF02699637 En ligne : https://link.springer.com/content/pdf/10.1007/BF02699637.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5463
in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS > Vol. 87, B3 (09/2004) . - p. 211-220[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000390 - Périodique Bibliothèque principale Documentaires Disponible Integration of antifouling and foul-release moieties for optimizing the performance of PEG-silicone coatings / Jiankun Hu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 6 (11/2021)
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Titre : Integration of antifouling and foul-release moieties for optimizing the performance of PEG-silicone coatings Type de document : texte imprimé Auteurs : Jiankun Hu, Auteur ; Haichun Zhang, Auteur ; Baoku Sun, Auteur ; Ading Lu, Auteur ; Guolun Zhong, Auteur ; Zhengfei Chen, Auteur Année de publication : 2021 Article en page(s) : p. 1669-1677 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion
Angle de contact
Antimicrobiens
Caractérisation
Essais (technologie)
Gonflement (physique)
Polyéthylène glycol
Réseaux polymères
Revêtements antisalissures
Rugosité
SiliconesLes silicones, ou polysiloxanes, sont des composés inorganiques formés d'une chaine silicium-oxygène (...-Si-O-Si-O-Si-O-...) sur laquelle des groupes se fixent, sur les atomes de silicium. Certains groupes organiques peuvent être utilisés pour relier entre elles plusieurs de ces chaines (...-Si-O-...). Le type le plus courant est le poly(diméthylsiloxane) linéaire ou PDMS. Le second groupe en importance de matériaux en silicone est celui des résines de silicone, formées par des oligosiloxanes ramifiés ou en forme de cage (wiki).Index. décimale : 667.9 Revêtements et enduits Résumé : Antifouling coatings are critical in preventing the surface of sea vessels being heavily fouled by bio-organisms. In this work, we attached biocidal moieties (Isobornyl methacrylate, IBOMA) to the side chains of the polyacrylic polymer to form the antifouling polymer (AFP). Then, the hydrophilic polysiloxane (HP) was prepared through the polyaddition of polyethylene glycol (PEG) and alkoxysilane onto the main chain of the hydrogen silicone oil. Finally, the hydrophilic fouling release coatings (FRCs) were formed by the reaction or winding of antifouling polymer and HP polymer with an interpenetrating polymer network (IPN) method (IPN-FRCs). The effects of the content of AFP and HP on the adhesion, surface roughness, and antifouling performance of the applied coatings on substrate are thoroughly studied and revealed in details through different analytic techniques. The IPN-FRCs exhibit high adhesion strength to the substrate, and the surface roughness is greatly reduced when submerged in seawater. Furthermore, the IPN-FRCs have high performance against seawater bio-organisms, such as barnacles, during both in-lab and marine field tests when right polymer ratios were chosen. Thus, the novel FRCs may have great potential to be applied for marine vessels in line with their low-cost in raw materials and high performance of the final products. Note de contenu : - EXPERIMENTAL : Materials - Preparation of antifouling coat - IPN-FRCs characterization - Marine field tests
- RESULTS AND DISCUSSION : FTIR analysis - Swelling rate analysis - Contact angle measurement - Adhesion force of the coatings - Surface roughness - Fluorescence microscopy analysis for algae inhibition performance - Marine field test - Antifouling mechanism
- Table 1 : Compositions of IPN-FRCsDOI : https://doi.org/10.1007/s11998-021-00526-5 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00526-5.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36824
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 6 (11/2021) . - p. 1669-1677[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23146 - Périodique Bibliothèque principale Documentaires Disponible Interaction between amphoteric polymer and silicic acid tanned leather : Ingenious regulation of ph based on isoelectric point / Ze Liang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVIII, N° 10 (10/2023)
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Titre : Interaction between amphoteric polymer and silicic acid tanned leather : Ingenious regulation of ph based on isoelectric point Type de document : texte imprimé Auteurs : Ze Liang, Auteur ; Zetian Zhang, Auteur ; Yang Liu, Auteur ; Zhengjun Li, Auteur Année de publication : 2023 Article en page(s) : p. 403-416 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation
Composés amphotériques
Cuirs et peaux -- Propriétés physiques
Huile de ricin et constituants
Point isoélectriqueEn biochimie, le point isoélectrique (pI) ou potentiel hydrogène isoélectrique (pHI) est le pH auquel une molécule est sous forme d'ion mixte ou, en physico-chimie, le pH d'une solution aqueuse dans laquelle un solide existe sous un potentiel électrique neutre.
En physico-chimie : Selon Bolger, le caractère acide ou basique d'une surface s'exprime par son point isoélectrique " Is ou IEPS (Iso Electric point for the surface) " ou point de charge nulle " PCN ou PZC (Point of Zero Charge) ", défini comme étant le pH de la solution aqueuse dans laquelle le solide existe sous un potentiel électrique neutre. Si le pH de la solution est basique, la surface est acide, et inversement. La différence entre le PZC et l'IEPS est basée sur le phénomène d'adsorption spécifique. On peut considérer que si la grandeur mesurée ne dépend pas de la solution utilisée pour la mesurer (pH, concentration, nature des ions), alors on a affaire à un PZC. Dans le cas contraire, c'est un IEPS que l'on mesure. Par exemple, quand la mesure de goutte sessile à deux liquides est utilisée, on considère en général qu'il n'y a pas adsorption des ions de cette goutte et que la goutte déplace complètement l'alcane qui sert de deuxième liquide: on est alors en présence d’un PZC. Au contraire, dans les mesures de potentiel d'écoulement (streaming potential), la solution joue un rôle important et c'est un IEPS que l'on mesure. Enfin, la charge nette se définit grâce au pH de la solution aqueuse dans laquelle la surface métallique existe, dans un état électriquement neutre (c’est-à -dire [M-OH2+ surf]=[M-O- surf]) et au PZC.
- Si pH < PZC alors la charge nette est positive
- Si pH > PZC alors la charge nette est négative.
Il existe plusieurs méthodes expérimentales permettant de décrire l’état acido-basique de la surface : la mesure du potentiel d’écoulement, la photoélectrochimie, la mesure de l’angle de contact, et la spectroscopie XPS.
Polyaddition
Polymères -- Synthèse
Polymères en émulsion
Produits de nourriture du cuir
Silicique, Acide
TannageIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Silicic acid-based tanning system is an effective and promising chrome-free tanning technology, and it is urgent to develop compatible post-tanning processes. Fatliquoring is one of the key procedures to determine the quality of resulted leather and fatliquoring agents mainly play the role of an effective softer/ plasticizer in leather production. However, there is a mismatch between most commercial fatliquoring agents (mainly compatible with chrome tanned leather) and silicic acid tanned leather (named SATL). Herein, an amphoteric polymer emulsion (APE) was prepared by free radical polymerization using methacryloxyethyl trimethyl ammonium chloride (DMC), 2-acrylamido-2-methylpropanesulfonate (AMPS), lauryl methacrylate (LMA), dimethylaminoethyl methacrylate (DMAEMA) as monomers. And in order to improve the lubricating property, APE was further compounded with castor oil to obtain an amphoteric fatliquoring agent (named COAPE). Comprehensive characterization showed that the amphoteric (pI=8.22) and amphiphilic APE could reduce the surface tension of water to 38.6 mN/m. The fatliquoring process was controlled by ingenious regulation of pH based on isoelectric points (pIs) of APE and SATL. In the initial stage, the pH of the bath was adjusted to be lower than the pIs of APE and SATL, amphoteric polymer molecules could easily penetrate into SATL leather as they are all positively charged. While during the fixing stage, the pH of the bath was adjusted between the pIs of APE and SATL, so the electrostatic interaction between amphoteric polymer molecules and SATL leather, as well as the aggregation of amphoteric polymers can promote their combination synergistically. As a fatliquoring agent, the application of COAPE demonstrated that its absorpotion rate (90.5%) was much higher than anionic commercial fatliquoring agent (63.2%), thus imparting SATL leather better softness (6.5 mm), elongation at break (95.5%) and tensile strength (11.6 N/mm2). These findings therefore provided scientific basis and technical support for the application of amphoteric materials to silicic acid-modified collagen matrix and would promote the practical application of silicic acid-based chrome-free tanning technology. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of amphoteric polymer emulsion (APE) and amphoteric fatliquoring agent (COAPE) - Characterization and properties of APE and the amphoteric polymer - Application of APE and COAPE in leather fatliquoring process
- RESULTS AND DISCUSSION : Characterization and properties of APE and the amphoteric polymer - Insight into interaction between amphoteric polymer and silicic acid tanned leather
- Table 1 : Fatliquoring process
- Table 2 : Fatliquoring agent and pH value of bath liquid used in different fatliquoring schemes
- Table 3 : Physical properties of SATL leather treated with different fatliquoring agentsDOI : https://doi.org/10.34314/jalca.v118i10.8229 En ligne : https://drive.google.com/file/d/13AQaPMWZmhlaEeSA3efdY8mtnqf7Tuiw/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39939
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXVIII, N° 10 (10/2023) . - p. 403-416[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24241 - Périodique Bibliothèque principale Documentaires Disponible Interaction between protocatechuic acid and zirconium ions and their tanning properties / Chunqiong Li in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 107, N° 1 (01-02/2023)
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Titre : Interaction between protocatechuic acid and zirconium ions and their tanning properties Type de document : texte imprimé Auteurs : Chunqiong Li, Auteur ; Haojie Qin, Auteur ; Shu Chen, Auteur ; Jie Yu, Auteur ; Xiaojun Shen, Auteur Année de publication : 2023 Article en page(s) : p. 11-15 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents de tannage
Caractérisation
Ions zirconium
Protocatéchuique, Acide
Tannage combinéLe tannage combiné se dit des tannages qui allient deux familles ou genre de tannage pour obtenir un résultat additionnant les qualités complémentaires des tannins mis en Å“uvre par exemple Chrome-Végétal ou Chrome-SynthétiqueIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : The interaction between protocatechuic acid (PCA) and zirconium ions has been studied via UV-Vis, FTIR and 1H-NMR spectra. The results show that the phenolic hydroxyl and carboxyl groups of PCA can coordinate with zirconium ions. The tanning performance of the protocatechuic acid combined with zirconium ions has been studied. The results show that the shrinkage temperature of the leather can reach 86-87°C in both Zr-PCA combined tanning and PCA-Zr combined tanning. Different tanning orders will lead to different pH values being required to achieve the best tanning effect, which is probably caused by the different interactions among PCA, zirconium ions and collagen fibres during the tanning process. Note de contenu : - MATERIALS AND METHODS : Materials - Experimental methods - Characterisation
- RESULTS AND DISCUSSION : Preparation and characterisation of PCA zirconium complex - Tanning propertiesEn ligne : https://drive.google.com/file/d/13axnV0UQ1hpbYt_Cy_CCUBaKRkWLka_N/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38867
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 107, N° 1 (01-02/2023) . - p. 11-15[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23893 - Périodique Bibliothèque principale Documentaires Disponible Interaction of aldehyde developed from amino acids of tannerry waste in a lower-vegetable tannage an eco-friendly approach - Part 2 / James Kanagaraj in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 89, N° 6 (11-12/2005)
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Titre : Interaction of aldehyde developed from amino acids of tannerry waste in a lower-vegetable tannage an eco-friendly approach - Part 2 Type de document : texte imprimé Auteurs : James Kanagaraj, Auteur ; S. Sadulla, Auteur ; G. S. Raja Kumar, Auteur ; N. K. Chandrababu, Auteur Année de publication : 2005 Article en page(s) : p. 250-256 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acacia et constituants
AldéhydesUn aldéhyde est un composé organique, faisant partie de la famille des composés carbonylés, dont l'un des atomes de carbone primaire (relié au plus à 1 atome de carbone) de la chaîne carbonée porte un groupement carbonyle.
L'aldéhyde le plus simple est le formaldéhyde (ou méthanal), aussi appelé formol lorsqu'il est en solution aqueuse.
Un aldéhyde dérive formellement d'un alcool primaire (oxydation) dont le groupement hydroxyde -OH est en bout de chaîne et se forme suite à l'enlèvement de deux atomes H d'où le nom "alcool déshydrogéné" ou aldéhyde.
Caractérisation
Chimie analytique
Colorimétrie
Croûte (cuir)On entend par "cuir en croûte" des cuirs ayant subi les opérations jusqu'au tannage, à l'exclusion de toute opération de corroyage ou de finissage, mais qui, par opposition aux wet-blue ont été séchés.
Cuirs et peaux -- Propriétés physiques
Eaux usées -- Analyse
Liqueurs de tannage
Réticulants
Tannage organique
Tannage végétalIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Fleshings obtained from the liming process were hydrolysed with a proteolytic enzyme and further broken down to the amino acid level before being used to prepare the corresponding aldehyde, which was used as a crosslinking agent.
In the present study the cross-linking agent developed was used to tan the delimed pelt. Subsequently, the leather obtained was tanned with wattle extract at various levels and the combination effect was studied. The tanning studies carried out using the cross-linking agent were discussed in detail in Part I of the paper. Details of the application of the cross-linker aldehyde and its results on pelts as well as with chrome tannage are described in Part 1 of this paper. (J. Soc. Leather Technol. Chem., 2005, 89 (1), 18.) The combination tanning studies with wattle extract at various levels are discussed in this part.Note de contenu : - Materials
- Methods
- Characterisation of cross-linking agent
- Tanning studies
- Table 1 : Characteristics of spent liquor and leather
- Table 2 : Shrinkage temperature and DSC data for the leather
- Table 3 : 1HNMR and FT-IR data
- Table 4 : Total Dissolved Solids (TDS) in various tanning effluent
- Table 5 : Colour measurements
- Table 6 : Colour difference value computed for various experiments when CA treated leather is taken as control
- Table 7 : Physical characteristics of crust leatherEn ligne : https://drive.google.com/file/d/1_VlY4UH2svTJ-6oGkxb3OFRWPiBoul2C/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39215
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 89, N° 6 (11-12/2005) . - p. 250-256[article]Interaction of aldehyde developed from amino acids of tannery waste in a lower - chrome tannage an eco-friendly approach / James Kanagaraj in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 89, N° 1 (01-02/2005)
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PermalinkDe l'intérêt d'une caractérisation rhéologique empirique et relative / Patrice Estellé in RHEOLOGIE, Vol. 21 (06/2012)
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PermalinkInterpenetrating polymer networks for coatings : properties, characterization, applications and current status / T. Amandaraj in PAINTINDIA, Vol. LI, N° 4 (04/2001)
PermalinkIntumescent coatings using epoxy, alkyd, acrylic, silicone, and silicone–epoxy hybrid resins for steel fire protection / Andreza P. Cardoso in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 6 (11/2020)
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PermalinkInvestigating propensity of roller spatter during application of water-based architectural paints: effect of thickeners and volume solids / Sumit Chaudhary in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
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PermalinkInvestigating thermal stability and flame retardant properties of synthesized halloysite nanotubes (HNT)/ethylene propylene diene monomer (EPDM) nanocomposites / S. Azarmgin in INTERNATIONAL POLYMER PROCESSING, Vol. XXX, N° 1 (03/2015)
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