Thermogravimetry of the thermal degradation of Japanese lacquer (urushi) films

Autor:	Toshihiro Fujii, Masamichi Tsukagoshi, Yuki Kitahara, Seiji Takahashi, Toshiya Sato
Rok vydání:	2012
Předmět:	Thermogravimetry Thermogravimetric analysis Materials science visual_art Kinetics Thermal Analytical chemistry visual_art.visual_art_medium Degradation (geology) Physical and Theoretical Chemistry Condensed Matter Physics Lacquer
Zdroj:	Journal of Thermal Analysis and Calorimetry. 111:685-688
ISSN:	1572-8943 1388-6150
DOI:	10.1007/s10973-011-2143-z
Popis:	The kinetics of the thermal degradation of Japanese lacquer (urushi) films in N2 and in air were studied by means of thermogravimetry (TG). Thermogravimetric and derivative thermogravimetric curves indicated that the degradation occurred in three stages. The atmosphere influenced the apparent activation energies (E a) of the three degradation stages. The activation energies (E a) for the first stage in N2 and air, obtained from the TG curve, were 19.12 and 10.19 kcal mol−1, respectively, and the corresponding pre-exponential factors (A) were 6.18 × 105 and 1.24 × 102 min−1 for 1-year-old urushi films.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c386e2924bc7ad215e05c9a9c8247caf https://doi.org/10.1007/s10973-011-2143-z Zobrazit plný text záznamu Full text from SpringerLink