Nanocomposites smart materials for great properties / Abhay D. Padhye in PAINTINDIA, Vol. LXV, N° 1 (01/2015)  

[article]  inPAINTINDIA > Vol. LXV, N° 1 (01/2015) . - p. 69-78 Titre : Nanocomposites smart materials for great properties Type de document : texte imprimé Auteurs : Abhay D. Padhye, Auteur ; Ganesh D. Mavale, Auteur Année de publication : 2015 Article en page(s) : p. 69-78 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Matériaux hybrides Matériaux intelligents Nanoparticules Nanoparticules -- Synthèse Nanotechnologie Polymères Index. décimale : 620.19 Autres matériaux Résumé : To obtain materials with very special properties, it may be necessary to reduce the interaction between the particles by keeping them in a certain distance. This kalis to the concept of nanocomposites consisting of two phases: An active one and a passive distance holder phase. A nanocomposite is a multiphase solid material where one of the phases has one, two or three dimensions of less than 100 nanometer (nm), or structures having nano-scale repeat distances between the different phases that make up the material. In the broadest sense this definition can include porous media, colloids, gels and copolymers, but is more usually taken to mean the solid combination of a bulk matrix and nano-dimensional phase(s) differing in properties due to dissimilarities in structure and chemistry. In this paper we tried to cover the synthesis of material nanocomposites, polymer nanocomposites & put light on varieties of nano composites. The paper covers mechanical, electrical, self healing and many smart properties of the nanocomposite which differ markedly from that of the normal component materials. Note de contenu : - THE TWO BASIC FACTS : The evolution of knowledge - Technological expertise - WHAT ARE WE TALKING ABOUT ? - NANOCOMPOSITE MATERIALS - REASONS FOR INTEREST FOR NANOCOMPOSITE TECHNOLOGY - TYPES OF NANO COMPOSITES : Conventional (tactoid) - Intercalated - Delaminated (or exfoliated) - Intercalated - Delaminated (or exfoliated) - METHODS OF SYNTHESIS : Exfoliation/adsorption - In situ intercalative polymerization - Melt intercalation - Template synthesis - Intercalation of prepolymer from solution - DIFFERENT TYPES OF NANO COMPOSITES : Alumina nanocomposites - Silica nanocomposites - Titanium dioxide nanocomposites - Carbon nanotube-reinforced composites - Elastomeric nanocomposites - Nanoclays - APPLICATION OF NANOCOMPOSITES : Sel healing coatings - Nano composites in fire retardent coatings - Nano composites in corrosion protection - Super hard nanocomposite coatings - nanocomposites in auto sector - ADVANTAGES OF NANOCOMPOSITES TECHNOLOGY - LIMITATIONS OF NANOCOMPOSITE TECHNOLOGY : Processing - Cost - Consistency and reliability in volume production - High lead time - Oxidative and thermal instability of nanoclays - COMMERCIAL AVAILABILITY OF NANOCOMPOSITES - GROWTH DRIVERS AND CHALLENGES En ligne : https://drive.google.com/file/d/1ioajU3PL0QrYSRLU3inTABBd_0CD91vw/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23495 [article]

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Renewable resources : The precursor for biodegradable surface coatings / Abhay D. Padhye in PAINTINDIA, Vol. LVIII, N° 2 (02/2008)

[article]  inPAINTINDIA > Vol. LVIII, N° 2 (02/2008) . - p. 73-88 Titre : Renewable resources : The precursor for biodegradable surface coatings Type de document : texte imprimé Auteurs : Abhay D. Padhye, Auteur ; Mangesh I. Chaudhari, Auteur Année de publication : 2008 Article en page(s) : p. 73-88 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Ressources renouvelables Revêtements -- Biodégradation Index. décimale : 667.9 Revêtements et enduits Résumé : For sustainable development in the new century, using resources and alternative substrates to the petroleum derived ones has gaines considerable importance. Natural products derived from plant and animal sources form large portion of renewable resources. The renewable resources are significantly important fro mindustrial and economic point of view. Biodegradable polymers derived from natural resources offered a possible solution towards waste disposal problems. The biobased materials are relatively inexpensive, ecocompatible and designed to experience biodegradation. In this paper we reviewed use of renewable resources in the synthesis of biodegradable coatings. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=7378 [article]

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Smart coatings - new generation coatings / Abhay D. Padhye in PAINTINDIA, Vol. LV, N° 4 (04/2005)

[article]  inPAINTINDIA > Vol. LV, N° 4 (04/2005) . - p. 53-68 Titre : Smart coatings - new generation coatings : Review section : 1st prize winning paper Type de document : texte imprimé Auteurs : Abhay D. Padhye, Auteur ; Vinod K. Sawant, Auteur Année de publication : 2005 Article en page(s) : p. 53-68 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : The intelligent combination of materials and novel coating processing technologies is being used to manufacture numerous coating systems that embody smart concepts. Coatings research and products have reached a certain level of sophistication. Smart coatings such as EMI shielding and conductive coatings have been in use for more than a decade. Other "intelligent" coatings include stimuli responsive, anti microbial and hygienic systems, self-healing, antifouling, super hydrophobic and many more. There is a general trend to control coating compositions on a molecular scale using nano technology. Nano-technology is the major driver through which controlled assembly of sequential macromolecular layers is possible. Such structures can form defined hollow or filled spheres that may be exploited to load coating with specific active agents, providing optical, magnetic, and catalytic functions. In this article an attempt has been made to understand the underlying concepts and applications in coating related area of hydrophobic, self-stratifying, bioactive coatings to name a few. Note de contenu : A. USE OF NANO TECHNOLOGY IN COATING : Use of nano-titanium dioxide in surface coatings - Effect of particle size - Surface characteristics - Applications: Nano TiO2 as UV blocker - Reduction of NO2,NO in atmosphere - Self-cleaning - Wood protection B. SELF CLEANING COATING : a) Hydrophobic coatings : Theory of hydrophobicity - Applications - b) Dirt repellency C. HEAT REFLECTING COATING D. ANTIMICROBIAL AND HYGIENIC COATING E. BIOACTIVE COATINGS : a) Biocidal antifouling : Self polishing coatings [SPC] based on TBT - Non TBT self polishing coatings [SPC]- b) Non biocidal antifouling F. SELF-STRATIFICATION COATING : Mechanism self stratification - Explanation - Application of self stratifying coatings H. HYBRID TECHNOLOGY : 1) Organic-organic hybridization - 2) Organic-inorganic hybridization - Model reaction of silane with silica to form siloxane shell. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11655 [article]

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