Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/3380
Título: Adding value [valorization] to tannery fleshings: part II – effect of protein hydrolysates on leather dyeing
Autor: Bragança, Idalina
Nouws, Henri P. A.
Crispim, Alfredo
Data: 2013
Editora: Society of Leather Technologists and Chemists
Relatório da Série N.º: Journal of the Society of Leather Technologists and Chemists; Vol. 97
Resumo: The tanning industry generates a high quantity of solid wastes. Therefore, there is a need to create valorization [added value] options for these wastes. The main objective of the present work was to study the effect of protein hydrolysates (HP) prepared from fleshings on leather dyeing. During previous studies it was found that the application of HP products, obtained from fleshings, in leather retannage intensified the colour of crust leather. In this work the CIELAB colour system was used to evaluate the effect of HP on retannage processes. The main conclusions of this study were: (i) HP can be used instead of a dicyanodiamide resin (Fortan DC) if the colour parameters of the standard procedure are to be maintained, and (ii) the replacement of an acrylic resin (Fortan A40) by glutaraldehyde-modified HP (GHP) results in a darker skin, and can therefore be interesting for the reduction of the quantity of dye used.
Peer review: yes
URI: http://hdl.handle.net/10400.22/3380
ISSN: 0144-0322
Versão do Editor: http://www.sltc.org/
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