Kontaktujte nás | Jazyk: čeština English
Název: | Properties of collagen hydrolysates obtained from leather shavings | ||||||||||
Autor: | Mokrejš, Pavel; Sukop, Svatopluk; Langmaier, Ferdinand; Kolomazník, Karel; Mládek, Milan | ||||||||||
Typ dokumentu: | Recenzovaný odborný článek (English) | ||||||||||
Zdrojový dok.: | Asian Journal of Chemistry. 2007, vol. 19, issue 2, p. 1207-1216 | ||||||||||
ISSN: | 0970-7077 (Sherpa/RoMEO, JCR) | ||||||||||
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Abstrakt: | Hydrolysates are low-molecular products obtained in the second stage of enzymatic hydrolysis of chrome-tanned leather shavings. It is necessary to know thermal properties of hydrolysates, gels and films for their intended industrial applications, especially when processing them into packing materials. The object of the presented work is study of thermal properties of powdery hydrolysates, gels of hydrolysates prepared from 40% (w/w) solutions and films of hydrolysates prepared from 12.5% (w/w) solutions with/without adding plasticizer (glycerin). Thermal properties (glass transition temperature, melting point of gels, and melting point of films) were determined employing differential scanning calorimetry and thermo mechanical analyzer. | ||||||||||
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