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Development of green composites from furfuryl palmitate / Ershad Mistri in Industrial & engineering chemistry research, Vol. 49 N° 22 (Novembre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 22 (Novembre 2010) . - pp. 11357-11362 Titre : Development of green composites from furfuryl palmitate Type de document : texte imprimé Auteurs : Ershad Mistri, Auteur ; N. R. Bandyopadhyay, Auteur ; Santi Nath Ghosh, Auteur Année de publication : 2011 Article en page(s) : pp. 11357-11362 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Composite  material Résumé : Renewable materials like furfuryl alcohol, palmitic acid, and jute were used for the first time to develop green biocomposites. Furfuryl ester of palmitic acid was prepared by enzymatic route and was used as the matrix material for developing green composite materials. The Diels-Alder reaction was carried out between furfuryl palmitate and maleic anhydride which resulted in a new material. Crystal growth was observed on Diels-Alder reaction along with a noncrystalline, semisolid part. The Diels-Alder product was characterized by nuclear magnetic resonance (NMR), IR, optical microscopy. Jute reinforced composites were prepared by solvent impregnation method followed by compression molding. The resulting composites were tested for their mechanical properties and the fiber/matrix bonding was investigated under SEM. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23437832 [article] Development of green composites from furfuryl palmitate [texte imprimé] / Ershad Mistri, Auteur ; N. R. Bandyopadhyay, Auteur ; Santi Nath Ghosh, Auteur . - 2011 . - pp. 11357-11362. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 22 (Novembre 2010) . - pp. 11357-11362 Mots-clés : Composite  material Résumé : Renewable materials like furfuryl alcohol, palmitic acid, and jute were used for the first time to develop green biocomposites. Furfuryl ester of palmitic acid was prepared by enzymatic route and was used as the matrix material for developing green composite materials. The Diels-Alder reaction was carried out between furfuryl palmitate and maleic anhydride which resulted in a new material. Crystal growth was observed on Diels-Alder reaction along with a noncrystalline, semisolid part. The Diels-Alder product was characterized by nuclear magnetic resonance (NMR), IR, optical microscopy. Jute reinforced composites were prepared by solvent impregnation method followed by compression molding. The resulting composites were tested for their mechanical properties and the fiber/matrix bonding was investigated under SEM. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23437832

Preparation and characterization of cross-linked starch/poly(vinyl alcohol) green films with low moisture absorption / Kunal Das in Industrial & engineering chemistry research, Vol. 49 N° 5 (Mars 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 5 (Mars 2010) . - pp. 2176–2185 Titre : Preparation and characterization of cross-linked starch/poly(vinyl alcohol) green films with low moisture absorption Type de document : texte imprimé Auteurs : Kunal Das, Auteur ; Dipa Ray, Auteur ; N. R. Bandyopadhyay, Auteur Année de publication : 2010 Article en page(s) : pp. 2176–2185 Note générale : Industrial Chemistry Langues : Anglais (eng) Mots-clés : Starch/poly(vinyl  alcohol);  TGA Résumé : The effects of incorporating different cross-linking agents into starch/poly(vinyl alcohol) (PVA) blend were examined by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), mechanical characterization, dynamic mechanical analysis (DMA), thermogravimetric analysis (TGA), moisture absorption tests, and scanning electron microscopy (SEM). Different cross-linkers such as borax, formaldehyde, epichlorohydrin, and ZnO were used to cross-link the films at the same weight percent. The films were prepared by gelatinization followed by a solution casting method. SEM microstructures revealed that the destructuring of starch granules was significantly influenced by the presence of cross-linkers during the gelatinization process. The extent of cross-linking was measured through the determination of the normalized gel mass and the normalized swelling degree of the films in dimethyl sulfoxide (DMSO) solvent. Tensile strength and tensile modulus were highest in borax cross-linked film, while the highest flexibility was achieved with the epichlorohydrin cross-linked film. Damping was remarkably increased, and moisture absorption was considerably decreased in the cross-linked films. The onset of thermal degradation was lowered, but the char yield was slightly increased in the cross-linked films. Note de contenu : Bibliogr. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901092n [article] Preparation and characterization of cross-linked starch/poly(vinyl alcohol) green films with low moisture absorption [texte imprimé] / Kunal Das, Auteur ; Dipa Ray, Auteur ; N. R. Bandyopadhyay, Auteur . - 2010 . - pp. 2176–2185. Industrial Chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 5 (Mars 2010) . - pp. 2176–2185 Mots-clés : Starch/poly(vinyl  alcohol);  TGA Résumé : The effects of incorporating different cross-linking agents into starch/poly(vinyl alcohol) (PVA) blend were examined by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), mechanical characterization, dynamic mechanical analysis (DMA), thermogravimetric analysis (TGA), moisture absorption tests, and scanning electron microscopy (SEM). Different cross-linkers such as borax, formaldehyde, epichlorohydrin, and ZnO were used to cross-link the films at the same weight percent. The films were prepared by gelatinization followed by a solution casting method. SEM microstructures revealed that the destructuring of starch granules was significantly influenced by the presence of cross-linkers during the gelatinization process. The extent of cross-linking was measured through the determination of the normalized gel mass and the normalized swelling degree of the films in dimethyl sulfoxide (DMSO) solvent. Tensile strength and tensile modulus were highest in borax cross-linked film, while the highest flexibility was achieved with the epichlorohydrin cross-linked film. Damping was remarkably increased, and moisture absorption was considerably decreased in the cross-linked films. The onset of thermal degradation was lowered, but the char yield was slightly increased in the cross-linked films. Note de contenu : Bibliogr. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901092n