Thermal Decomposition and Kinetics of Mixtures of Polylactic Acid and Biomass during Copyrolysis
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Thermal Decomposition and Kinetics of Mixtures of Polylactic Acid and Biomass during Copyrolysis
Thermal Decomposition and Kinetics of Mixtures of Polylactic Acid and Biomass during Copyrolysis
中国化学工程学报(英文版)2008年16卷第6期 页码:929-933
Affiliations:
Key Laboratory of Industrial Ecology and Environmental Engineering, MOE, School of Environmental & Biological Science & Technology, Dalian University of Technology,Dalian,China,116024
王刚, 李爱民. Thermal Decomposition and Kinetics of Mixtures of Polylactic Acid and Biomass during Copyrolysis[J]. 中国化学工程学报(英文版), 2008,16(6):929-933.
WANG Gang, LI Aimin. Thermal Decomposition and Kinetics of Mixtures of Polylactic Acid and Biomass during Copyrolysis[J]. , 2008, 16(6): 929-933.
王刚, 李爱民. Thermal Decomposition and Kinetics of Mixtures of Polylactic Acid and Biomass during Copyrolysis[J]. 中国化学工程学报(英文版), 2008,16(6):929-933.DOI: 10.1016/S1004-9541(09)60018-5.
WANG Gang, LI Aimin. Thermal Decomposition and Kinetics of Mixtures of Polylactic Acid and Biomass during Copyrolysis[J]. , 2008, 16(6): 929-933.DOI: 10.1016/S1004-9541(09)60018-5.
Thermal Decomposition and Kinetics of Mixtures of Polylactic Acid and Biomass during Copyrolysis
Thermal decomposition of polylactic acid(PLA) was studied in the presence of pine wood sawdust(PS)
walnut shell(WS)
corncob(CC) in order to understand the pyrolytic behavior of these components occurring in waste.A thermogravimetric analyzer(TGA) was applied for monitoring the mass loss profiles under heating rate of 10℃·min
-1
.Results obtained from this comprehensive investigation indicated that PLA was decomposed in the temperature range 300-372℃
whereas the thermal degradation temperature of biomass is 183-462℃.The difference of mass loss(Δ
W
) between experimental and theoretical ones
calculated as algebraic sums of those from each separated component
is about 17%-46% at 300-400℃.These experimental results indicated a significant synergistic effect during PLA and biomass copyrolysis.Moreover
a kinetic analysis was performed to fit thermogravimetric data
the global processes being considered as one to two consecutive reactions.Areasonable fit to the experimental data was obtained for all materials and their blends.
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