Chromium combination tannage of rural and minimal tanned crusts
Journal Title: JOURNAL OF ADVANCES IN BIOLOGY - Year 2016, Vol 9, Issue 2
Abstract
Chrome tanning gives the tanned hide/ skins many good properties such as degree of fullness ,softness , resilience standard shrinkage temperature . The study aims to make use of this by a ppling combination tannage. This was done by treating the traditionally vegetable tanned leathers with semi chrome tanning . Vegetable tannin are a group of polyphenolic compounds extracted from plants and used tannage . The infusion and subsequent binding of vegetable tannins to animal hides or skins usually results in increased shrinkage temperature from the range 60-65c for an untanned hide skin to about 80c . The mechanism through which the vegetable tannins raise the shrinkage temperature of leather by the potential of forming multiple hydrogen bonds , it is considerable that they can cross link collagen molecules and there by stabilize the fibrillary network of the skin .Nevertheless , high shrinkage temperature is requiring by shoe upper manufactures to be 100c . Hence a combination tannage of chrome vegetable will improve the shrinkage temperature of the vegetable tannins and the feel of fullness of the chrome leather . Acacia nilotica tannins is used as retanning or pretanning agent for producing minimal crusts which are further semi chrome to give the properties of chrome vegetable combination tannage . Third sheep skins were minimally tanned and processed until finished leathers . The leather produced was analyzed for physical and chemical properties and showed good degree of fullness , softness and resilience . To encourage the rural tanner and promote their process and production third sheep skins which were tanned by rural process , stripped with soda ash and semi-chromed . The crusts were further processed up to finishing .The finished leather s were analyzed and showed good results . To help the rural tanners to increase their production and to cope with clean technology . A small experimental drum is designed and it can be easily put into service by the rural tanners with very low cost .
Authors and Affiliations
Dr. Ardelshifa Mohammed Elhassan
Keywords
Related Articles
- EP ID EP654534
- DOI 10.24297/jab.v9i2.4015
- Views 150
- Downloads 0
HEAVY METALS ASSESSMENT IN THE STRIPED VENUS CLAM, CHAMELEA GALLINA, IN EGYPTIAN FISHERIES AS POTENTIAL CANDIDATE FOR EXPLOITATION AND AQUACULTURE
The Striped Venus Clam, Chamelea gallina, is one of the most important commercial bivalve species of the Verenidae family in the Mediterranean. It was suggested for the first time as potential candidate for exploitation...
Nutritional Assessment and Molecular Identification of Microorganisms from Akhuni/Axone: A Soybean Based Fermented Food of Nagaland, India
Soybean based fermented foods are known to be highly nutritive, not just because it contains high protein content but also due to presence of polyphenols. Various microorganisms involved during the fermentation process h...
Hydrogen production and metabolic response of Spirulina sp , Calothrix parteniana and Oscillatoria sp to sulphur and /or nitrogen deficiency
Spirulina platensis SAG obtained from (Sammlung von Algen culturing Gottingen), Calothrix parteniana and Oscillatoria sp. (isolated from Egyptian soil sample) were cultivated in BG11 medium either in the presence of nitr...
Antidiabetic and Immunomodulatory Effects of Oleuropein and Vitamin C in Diabetic Male Rats
The present work was designed to study the antidiabetic and immunomodulatory effects of olive leaf polyphenol (Oleuropein) and vitamin C in diabetic male rats. Diabetes was induced by a single i.p. dose of STZ (40 mg/kg...
Genetic Diversity in Bioinformatics: A Novel Application of Biology
This paper deals with the various search and analysis techniques involving different possible pairs of varieties selected on the basis of morphological characters, Climatic conditions and Nutrients so as to obtain...