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Calorimetry of the Reactions of Hydrolysates of Chromed Shavings with Aldehydes

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Abstract

Hydrolysates from chromed leather waste obtained in powdered form on an industrial scale by using biotechnical methods were analysed by TG an DSC techniques. Besides about 9% (mass/mass) of moisture, around 1% (mass/mass) of cyclohexylamine was found in the pulverized hydrolysates. Calorimetric measurement of the reaction heats of the reactions of the hydrolysates with commercially available aldehydes indicates that their reactivity decreases in the sequenceglutardialdehyde>>methylglyoxal≈acetaldehyde>>glyoxal>formaldehyde.

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Authors and Affiliations

  1. Institute of Leather and Protein Technology, Faculty of Technology, Thomas Bata University, 762 72, Zlin, Czech Republic

    F. Langmaier, M. Mládek, K. Kolomaznik, J. Šívarová & S. Sukop

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  1. F. Langmaier
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  2. M. Mládek
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  3. K. Kolomaznik
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  4. J. Šívarová
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  5. S. Sukop
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Langmaier, F., Mládek, M., Kolomaznik, K. et al. Calorimetry of the Reactions of Hydrolysates of Chromed Shavings with Aldehydes. Journal of Thermal Analysis and Calorimetry 67, 659–666 (2002). https://doi.org/10.1023/A:1014360923250

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