TY - JOUR
T1 - Co-microencapsulate of ammonium polyphosphate and pentaerythritol and kinetics of its thermal degradation
AU - Sun, Lishui
AU - Qu, Yongtao
AU - Li, Shaoxiang
N1 - Funding Information:
The Science Foundation of Shandong Province ( ZR2009FQ019 ) and Doctoral Fund of QUST are gratefully acknowledged.
PY - 2012/3
Y1 - 2012/3
N2 - Co-microencapsulated ammonium polyphosphate (APP) and pentaerythritol (PER) (M (A&P)) is prepared using melamine-formaldehyde (MF) resin by in situ polymerization method, and characterized by Energy dispersive spectrometer (EDS) and Fourier transform infrared (FTIR) spectra. Thermal stability of M (A&P) has been analyzed and compared with APP/PER mixture. In air atmosphere, the mass loss of M (A&P) at different heating rates was investigated using TGA. The kinetics of thermal degradation and activation energy was described using Flynn-Wall-Ozawa and Kissinger methods. It showed that there were two degradation stages. Expanded carbon structure with honeycomb was formed in the first stage between 200 and 450°C. The second stage was the oxidation of carbon with E a as high as 151.7 kJ/mol, so the expanded carbon had a good thermal stability. The reaction order of thermal degradation was found to be 0.935, so the mechanism of M (A&P) thermal degradation was controlled by the process of random nuclear formation and growth.
AB - Co-microencapsulated ammonium polyphosphate (APP) and pentaerythritol (PER) (M (A&P)) is prepared using melamine-formaldehyde (MF) resin by in situ polymerization method, and characterized by Energy dispersive spectrometer (EDS) and Fourier transform infrared (FTIR) spectra. Thermal stability of M (A&P) has been analyzed and compared with APP/PER mixture. In air atmosphere, the mass loss of M (A&P) at different heating rates was investigated using TGA. The kinetics of thermal degradation and activation energy was described using Flynn-Wall-Ozawa and Kissinger methods. It showed that there were two degradation stages. Expanded carbon structure with honeycomb was formed in the first stage between 200 and 450°C. The second stage was the oxidation of carbon with E a as high as 151.7 kJ/mol, so the expanded carbon had a good thermal stability. The reaction order of thermal degradation was found to be 0.935, so the mechanism of M (A&P) thermal degradation was controlled by the process of random nuclear formation and growth.
KW - Activation energy
KW - Co-microencapsulate
KW - Thermal degradation kinetics
KW - Thermogravimetric analysis
UR - http://www.scopus.com/inward/record.url?scp=84856240966&partnerID=8YFLogxK
U2 - 10.1016/j.polymdegradstab.2011.12.003
DO - 10.1016/j.polymdegradstab.2011.12.003
M3 - Article
AN - SCOPUS:84856240966
SN - 0141-3910
VL - 97
SP - 404
EP - 409
JO - Polymer Degradation and Stability
JF - Polymer Degradation and Stability
IS - 3
ER -