Copolymères à base de tannins et déchets lignocellulosiques avec des matériaux synthétiques en substitution des sels de chrome pour applications en flexibilité

Abstract : The purpose of this study was to formulate new leather tanning agents, non toxic environment-friendly products for partial or total chrome substitution by the use of copolymers of tannins and waste lignocellulosic materials with synthetic materials. The use of acrylic acid copolymerized with natural materials gave acceptable results in the case of retanning application with pelts pretanned with chrome. In the second part of the work, partial and total substitutions of chromium salts by the use of vegetal tannins coreacted with new MUF resins were definitely very successful. New leather analysis techniques have been developed and compared with the classical analysis systems well-known in the leather tannin industry : Electronic Spin Resonance (ESR) and Thermomechanical Analysis (TMA). A new method to determine the leather shrinkage temperature based on TMA has been successful developed.
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Caroline Simon. Copolymères à base de tannins et déchets lignocellulosiques avec des matériaux synthétiques en substitution des sels de chrome pour applications en flexibilité. Autre. Université Henri Poincaré - Nancy 1, 2002. Français. ⟨NNT : 2002NAN10226⟩. ⟨tel-01754440⟩

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