Accueil
Détail de l'auteur
Auteur Balachandran Unni Nair
Commentaire :
Council of Scientific and Industrial Research - Central Leather Research Institute, Chemical Laboratory - Adyar - Chennai - India
|
Documents disponibles écrits par cet auteur
Ajouter le résultat dans votre panier Affiner la recherche
Studies on the stabilization of collagen using dialdehyde starch : Part I. Effect of autoclaving on dialdehyde starch / Swarna Vinodh Kanth in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CI, N° 12 (12/2006)
[article]
Titre : Studies on the stabilization of collagen using dialdehyde starch : Part I. Effect of autoclaving on dialdehyde starch Type de document : texte imprimé Auteurs : Swarna Vinodh Kanth, Auteur ; Balaraman Madhan, Auteur ; Jonnalagadda Raghava Rao, Auteur ; Balachandran Unni Nair, Auteur ; S. Sadulla, Auteur ; T. Ramasami, Auteur Année de publication : 2006 Article en page(s) : p. 444-453 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Polysaccharides are abundant, non-toxic, biodegradable natural polymers possessing a high degree of functionality. Starch, an inexpensive and renewable material is modified and widely used as a raw material in various industries. Starch on selective oxidation gives dialdehyde starch (DAS), a polymeric dialdehyde. In this investigation tanning system using autoclaved dialdehyde starch (ADAS) has been explored. Autoclaving of DAS is found to result in hydrolysis to lower molecular weight oligomeric species. These lower molecular weight species show better tanning properties compared to unautoclaved DAS. Similar effect has also been observed on the use of DAS at alkaline conditions. Thermal and enzymatic stability of ADAS tanned leather at varied concentration, pH, time and temperature have been studied. Leathers with a maximum shrinkage temperature of 88°C have been obtained while using ADAS at pH 10. The ADAS tanned leather also imparted highest degree of, stability to collagen against collagenase at pH 10. Scanning electron microscopic analysis showed a well-coated fiber matrix. The leathers obtained using ADAS as tanning agent have been compared with chrome tanned leathers for organoleptic properties. En ligne : https://drive.google.com/file/d/1wQX26JG9XSgtHqb_LAsdaMCJt0wKEg9M/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3853
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CI, N° 12 (12/2006) . - p. 444-453[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 005986 - Périodique Bibliothèque principale Documentaires Disponible Studies on the use of Sesuvium Portulacastrum - Part II / Swarna Vinodh Kanth in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIV, N° 1 (01/2009)
[article]
Titre : Studies on the use of Sesuvium Portulacastrum - Part II : Preservation of skins Type de document : texte imprimé Auteurs : Swarna Vinodh Kanth, Auteur ; S. Preethi, Auteur ; B. Keerthi, Auteur ; A. Tamil Selvi, Auteur ; P. Saravanan, Auteur ; Jonnalagadda Raghava Rao, Auteur ; Balachandran Unni Nair, Auteur Année de publication : 2009 Article en page(s) : p. 25-32 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Sesuvium portulacastrum (S. portulacastrum) a perennial halophyte has been used as a replacement for salt in the curing process of Goatskins. The quality of phyto-preserved skins has been assessed with respect to hair slip, putrefaction odor, bacterial count, moisture content, shrinkage temperature and total extractable nitrogen. Phyto-preserved skins have been processed into finished leathers and assessed for organoleptic properties and physical characteristics. The product for phyto-preservation made from S. portulacastrum has been found to be as effective as conventional salt based curing process of goat skins. The quality of the preserved skins has been found to be on par with that of salt cured skins. The quality of resultant leathers of the experiment has been found to be comparable with control. The preservation efficacy of phyto-preserve could be due to the synergistic action of its antimicrobial metabolite present in its essential oils and the salt present in the plant. En ligne : https://drive.google.com/file/d/14hda1FkeLXj0UgVSxvlq5OCMfL2Op41r/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3252
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CIV, N° 1 (01/2009) . - p. 25-32[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 010993 - Périodique Bibliothèque principale Documentaires Disponible Tannic acid-phosphonium combination : A versatile chrome-free organic tanning / N. N. Fathima in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CI, N° 5 (05/2006)
[article]
Titre : Tannic acid-phosphonium combination : A versatile chrome-free organic tanning Type de document : texte imprimé Auteurs : N. N. Fathima, Auteur ; Rathinam Aravindhan, Auteur ; Jonnalagadda Raghava Rao, Auteur ; Balachandran Unni Nair, Auteur Année de publication : 2006 Article en page(s) : p. 161-168 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : An organic combination tanning system based on tannic acid, a precursor to vegetable tannins and tetrakis (hydroxymethyl) phosphonium sulfate (THPS) as a substitute for chrome tanning has been developed. The shrinkage temperature of the leathers obtained is 88°C. The tanning system is versatile in terms of processing both upper and garment leathers. The physical strength characteristics and organoleptic properties of the leathers obtained are comparable to that of chrome tanned leather. Environmental impact assessment shows that there is reduction in total solids when compared to chrome tanning. En ligne : https://drive.google.com/file/d/1v82nWni65vFi65DJoGNZdJVFB21E5g6o/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4010
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CI, N° 5 (05/2006) . - p. 161-168[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 004807 - Périodique Bibliothèque principale Documentaires Disponible Tanning agent based on mixed metal complexes of aluminium and zinc / Balaraman Madhan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCVI, N° 9 (09/2001)
[article]
Titre : Tanning agent based on mixed metal complexes of aluminium and zinc Type de document : texte imprimé Auteurs : Balaraman Madhan, Auteur ; Jonnalagadda Raghava Rao, Auteur ; Balachandran Unni Nair, Auteur Année de publication : 2001 Article en page(s) : p. 343-349 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Environmental awareness throughout the world has forced researchers to look for an alternative-tanning agent for chromium. The alternative-tanning agent should produce white leathers with properties comparable to that of chrome tanned leather. A tanning agent based on mixed complexes of Aluminium(III) and Zinc(II) was prepared using different combination of ligands such as sodium citrate, triethylenetetramine, phthalic acid and sodium tartrate. The salt thus prepared was used for tanning studies. This chrome free tanning agent produces white leather with a shrinkage temperature above 90°C. The strength characteristics as well as the organoleptic properties of these leathers were comparable to that of conventional chromium and aluminium tanned leathers. En ligne : https://drive.google.com/file/d/1A_D0_ZwSHx29wVPigAc9f5_I61Rd7PXV/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4365
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCVI, N° 9 (09/2001) . - p. 343-349[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 001566 - Périodique Bibliothèque principale Documentaires Disponible Tanning studies with basic chromium sulfate prepared using chrome shavings as a reductant : A call for 'wealth from waste' approach to the tanning industry / Jonnalagadda Raghava Rao in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCIX, N° 4 (04/2004)
[article]
Titre : Tanning studies with basic chromium sulfate prepared using chrome shavings as a reductant : A call for 'wealth from waste' approach to the tanning industry Type de document : texte imprimé Auteurs : Jonnalagadda Raghava Rao, Auteur ; Palanisamy Thanikaivelan, Auteur ; Balachandran Unni Nair, Auteur ; Kalarical Janardhanan Sreeram, Auteur Année de publication : 2004 Article en page(s) : p. 170-176 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Leather processing is associated with the generation of both solid and liquid wastes. Various in plant as well as end-of-pipe treatment methodologies are available for the management of liquid wastes. Although several options do exist for handling solid wastes, the presence of chromium causes concern for many of the applications. Chrome shavings contribute to almost 10% of the solid wastes generated from processing raw hides/skins. In this study, chrome shavings have been advantageously used as a reductant for the manufacture of basic chromium sulfate thereby providing a comprehensive closed cycle. Two BCS products developed with chrome shavings alone for reduction (complete replacement of molasses, product A) or partial replacement of molasses (product B) have been employed for tanning of goatskins. Studies reveal that the quality of the wet blue leathers is on par with the leathers tanned with commercial BCS. Shrinkage temperature of the leathers is comparable and is above 100°C at an offer of 1.25% Cr2O3. Chromium exhaustion is in the range of 75 - 80% with 1318 -1490 ppm of chromium in the spent tan liquor. Wet blue leathers tanned with product A possess more fullness among all the leathers, which may be due to the presence of intermediate protein products formed during BCS preparation. This is further confirmed with the scanning electron microscopic analysis. Performance of the crust leathers is comparable to that of conventional tanned leathers in spite of reduction in syntans by 20%. This methodology provides a means for recovering wealth from waste. En ligne : https://drive.google.com/file/d/1_zQqLuBfXl2GkITE1bUD8wEPCMdErPzj/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4191
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCIX, N° 4 (04/2004) . - p. 170-176[article]Réservation
Réserver ce document
Exemplaires (2)
Code-barres Cote Support Localisation Section Disponibilité 001600 - Périodique Bibliothèque principale Documentaires Disponible 001601 - Périodique Bibliothèque principale Documentaires Disponible The development of an integrated rechroming-neutralization-post tanning proces manufacture of upper leathers from goatskins / T. Ayyasamy in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 89, N° 2 (03-04/2005)
PermalinkThe three pot solution for chromium, tannins and solid waste : Recovery and reuse technique for spent semi-chrome liquor and chrome shavings / Subramanian Saravanabhavan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 88, N° 5 (09-10/2004)
PermalinkThermochromism for smart leathers / Vairaperumal Tamilmani in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CX, N° 6 (06/2015)
PermalinkTowards sustainable leather production vegetable tanning in non-aqueous medium / Narayana Reddy Gari in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CX, N° 4 (04/2015)
PermalinkUnderlying principles in chrome tanning : Part 1. Conceptual design of pickle-less tanning / Wondu Legesse in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCVII, N° 12 (12/2002)
PermalinkUnderlying principles in chrome tanning : Part 2. Underpinning mechanism in pickle-less tanning / Palanisamy Thanikaivelan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCIX, N° 2 (02/2004)
PermalinkUse of ternary solvent (water - ethanol - ethyl acetate) medium for leather processing : a possible paradigm change / Bhargavi Narayana Reddy Gari in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXI, N° 7 (07/2016)
PermalinkUtilization of calcium alginate beads as adsorbent for removal of dyes from tannery wastewaters / Rathinam Aravindhan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CI, N° 6 (06/2006)
PermalinkValue added leather auxiliaries from paper and pulp industry waste / Mohan Vedhanayagam in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CX, N° 9 (09/2015)
Permalink