Tara (Caesalpinia spinosa): the sustainable source of tannins for innovative tanning processes

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Title:	Tara (Caesalpinia spinosa): the sustainable source of tannins for innovative tanning processes
Author:	Castell, Joan Carles; Sorolla, Silvia; Jorba, Montse; Aribau, Joaquim; Bacardit Dalmases, Anna; Ollé Otero, Lluís
Other authors:	Universitat Politècnica de Catalunya. Departament d'Enginyeria Química; Universitat Politècnica de Catalunya. ENGIBIO - Enginyeria i Biotecnologia
Abstract:	This study considers the fruit of the tara tree as a sustainable source for tanning agents and proposes alternatives to the commercial mineral salts and vegetable extracts to comply with environment and social concerns. Tara tannins have been used in retanning formulas in leather processing and its properties are well known. This work aims to optimize formulations using tara as a pre-tanning agent. Combinations with a naphthalene sulphonic syntan are used to obtain an innovative wet-white recipe in which shrinkage temperature, tensile strength, tensile elongation, tear load and lightfastness properties are considered as statistical variables
Subject(s):	-Àrees temàtiques de la UPC::Enginyeria química -Àrees temàtiques de la UPC::Enginyeria tèxtil -Tannins -Tanins -Adoberia
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Document type:	Article - Published version Article
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