Titre du document / Document title

DYNAMIC MECHANICAL THERMAL ANALYSIS (DMTA) OF LEATHER PART 1: EFFECT OF TANNING AGENT ON THE GLASS TRANSITION TEMPERATURE OF COLLAGEN

Auteur(s) / Author(s)

JEYAPALINA S. ; ATTENBURROW G. E. ; COVINGTON A. D. ;

Résumé / Abstract

We report the dynamic mechanical behaviour of leather within the temperature range - 100 to 300°C, where three major viscoelastic transitions were identified, termed a, β and y. The β transition peak represents the glass transition temperature of the amorphous region of collagen molecules. It also demonstrates that tanning agents act as plasticisers and depress the glass transition temperature to a lower temperature. Thus, the tanning process itself may be viewed as a plasticisation of the collagen molecule: the tanning molecules interpose themselves between the collagen chains, thus reducing the forces holding the chains together. Different tanning agents show differing degrees of plasticisation.

Revue / Journal Title

Journal of the Society of Leather Technologists and Chemists    ISSN  0144-0322   CODEN JSLTBY 

Source / Source

2007, vol. 91, n^o6, pp. 236-242 [7 page(s) (article)]

Langue / Language

Anglais

Editeur / Publisher

Society of Leather Technologists and Chemists, Dewsbury, ROYAUME-UNI  (1973) (Revue)

Localisation / Location

INIST-CNRS, Cote INIST : 1027, 35400016173461.0030