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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Two-photon polymerization : A new promising technique for protonic paints / Raul Arvind in PAINTINDIA, Vol. LXV, N° 10 (10/2015)  

[article]  inPAINTINDIA > Vol. LXV, N° 10 (10/2015) . - p. 80-85 Titre : Two-photon polymerization : A new promising technique for protonic paints Type de document : texte imprimé Auteurs : Raul Arvind, Auteur ; Ganesh D. Mavale, Auteur Année de publication : 2015 Article en page(s) : p. 80-85 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cristaux photoniques Photoréticulation Polymérisation Index. décimale : 667.9 Revêtements et enduits Résumé : Photo-polymerization is a commonly used technique for converting monomers to high molecular weight polymers using photoinitiators. Most of the photo-polymerization is based on one photon polymerization. Two-photon polymerization (TPP) is now emerging as a promising technique as it is a powerful tool for making micro and nanoscale structures. The technique finds use in large variety of fields such as fabrication of micromechanical systems, microfluidic devices, microoptical components, plasmonic components biomedical devices, scaffolds for tissue engineering. In less than two decades of research, TPP has been employed in the fabrication of a great number of diverse micro-objects through the use of a wide variety of effective two-photon absorbing chromophores. In case of paints, it can find use in Phonic Paints. The biggest challenge in photonic paint is development of three-dimensional Photonic Crystal. This can be addressed through use of Two Photon Polymerization. In this review, we have discussed the two photon polymerization process, its comparison with one photon polymerization, materials and setup required for this process and its use for generating 3D photonic crystal which can be used in Photonic Paints. Note de contenu : - TWO-PHOTON PHOTOPOLYMERIZATION : Photo-polymerization induced by two-photon absorption - Materials used for TPP - Experimental setup for TPP - APPLICATIONS OF TPP TECHNIQUE : Applications in photonics En ligne : https://drive.google.com/file/d/13vMA0d4Xak0c2OVZSP-xZODjTEADbEm7/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24833 [article]

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