Non-isothermal kinetic applied to thermal decomposition of commercial alkyd varnish

被引:8
作者
Amaral, GCA [1 ]
Crespi, MS [1 ]
Ribeiro, CA [1 ]
Hikosaka, MY [1 ]
Guinesi, LS [1 ]
Santos, AF [1 ]
机构
[1] UNESP, Inst Quim, Sao Paulo, Brazil
关键词
alkyd resin; kinetic parameters; non-isothermal kinetic;
D O I
10.1007/s10973-005-0068-0
中图分类号
O414.1 [热力学];
学科分类号
摘要
Samples of commercial alkyd resin varnish were spread in a film form on slides, dried at room temperature and exposed to solar radiation from one day up to seven months. Thermogravimetric measurements have been done. Based on the TG data, the Flynn-Wall isoconversional method was applied. The activation energy varied between 176-154 kJ mol(-1) and logA was between 15.5-12.9 min(-1) for A, B and C samples at 95% confidence level.
引用
收藏
页码:375 / 377
页数:3
相关论文
共 14 条
[1]
BROWN ME, 1980, REACTIONS SOLID STAT, P22
[2]
THE SIGNIFICANCE OF THE ONSET AND FINAL TEMPERATURES IN THE KINETIC-ANALYSIS OF TG-CURVES [J].
DOLLIMORE, D ;
EVANS, TA ;
LEE, YF ;
PEE, GP ;
WILBURN, FW .
THERMOCHIMICA ACTA, 1992, 196 (02) :255-265
[3]
CALCULATION OF ACTIVATION-ENERGY AND PREEXPONENTIAL FACTORS FROM RISING TEMPERATURE DATA AND THE GENERATION OF TG AND DTG CURVES FROM A-VALUES AND E-VALUES [J].
DOLLIMORE, D ;
EVANS, TA ;
LEE, YF ;
WILBURN, FW .
THERMOCHIMICA ACTA, 1991, 188 (01) :77-85
[4]
Doyle CD., 1962, J Appl Polym Sci, V6, P639, DOI [DOI 10.1002/APP.1962.070062406, 10.1002/app.1962.070062406]
[5]
FAZENDA JMR, 1993, ABRAFATI SAO PAULO, V1
[6]
Flynn J.H., 1969, POLYM LETT, V4, P323, DOI DOI 10.1002/POL.1966.110040504
[7]
GENERAL TREATMENT OF THERMOGRAVIMETRY OF POLYMERS [J].
FLYNN, JH ;
WALL, LA .
JOURNAL OF RESEARCH OF THE NATIONAL BUREAU OF STANDARDS SECTION A-PHYSICS AND CHEMISTRY, 1966, A 70 (06) :487-+
[8]
Kinetic analysis of solid-state reactions: The universality of master plots for analyzing isothermal and nonisothermal experiments [J].
Gotor, FJ ;
Criado, JM ;
Malek, J ;
Koga, N .
JOURNAL OF PHYSICAL CHEMISTRY A, 2000, 104 (46) :10777-10782
[9]
KISSINGER HE, 1957, ANAL CHEM, V29, P1702, DOI DOI 10.1021/AC60131A045
[10]
KINETIC-ANALYSIS OF THERMOANALYTICAL DATA BY EXTRAPOLATING TO INFINITE TEMPERATURE [J].
KOGA, N .
THERMOCHIMICA ACTA, 1995, 258 :145-159