Calorimetry of the Reactions of Hydrolysates of Chromed Shavings with Aldehydes |
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Authors: | Langmaier F. Mládek M. Kolomaznik K. Šívarová J. Sukop S. |
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Affiliation: | (1) Institute of Leather and Protein Technology, Faculty of Technology, Thomas Bata University, 762 72 Zlin, Czech Republic |
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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. This revised version was published online in August 2006 with corrections to the Cover Date. |
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Keywords: | calorimetry chromed leather waste collagen hydrolysate |
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