Effect of chemical treatment of pineapple crown fiber in the production, chemical composition, crystalline structure, thermal stability and thermal degradation kinetic properties of cellulosic materials

2021 ◽  
Vol 499 ◽  
pp. 108227
Author(s):  
Paulo Henrique Fernandes Pereira ◽  
Heitor Luiz Ornaghi ◽  
Valdeir Arantes ◽  
Maria Odila Hilário Cioffi
Keyword(s):  
Thermal Stability ◽  
Chemical Composition ◽  
Thermal Degradation ◽  
Crystalline Structure ◽  
Chemical Treatment ◽  
Kinetic Properties ◽  
Degradation Kinetic ◽  
Cellulosic Materials ◽  
Thermal Degradation Kinetic

Thermal Stabilities and the Thermal Degradation Kinetics Study of the Flame Retardant Epoxy Resins

2014 ◽  
Vol 1053 ◽  
pp. 263-267 ◽  
Author(s):  
Xiu Juan Tian
Keyword(s):  
Thermal Stability ◽  
Thermal Degradation ◽  
Flame Retardant ◽  
Epoxy Resin ◽  
Epoxy Resins ◽  
Degradation Kinetics ◽  
Thermal Degradation Kinetics ◽  
Thermal Stabilities ◽  
Degradation Kinetic ◽  
Modified Epoxy

Thermal stability and thermal degradation kinetics of epoxy resins with 2-(Diphenylphosphinyl)-1, 4-benzenediol were investegated by thermogravimetric analysis (TGA) at different heating rates of 5 K/min, 10 K/min, 20 K/min and 40 K/min. The thermal degradation kinetic mechanism and models of the modified epoxy resins were determined by Coast Redfern method.The results showed that epoxy resins modified with the flame retardant had more thermal stability than pure epoxy resin. The solid-state decomposition mechanism of epoxy resin and the modified epoxy resin corresponded to the controlled decelerating ځ˽̈́˰̵̳͂͆ͅ˼˰̴̱̾˰̸̵̈́˰̵̸̳̱̹̽̾̓̽˰̶̳̹̾̈́̿̾̓ͅ˰̶˸ځ˹˰̵̵͇͂˰̃˸́˽ځ˹2/3. The introduction of phosphorus-containing flame retardant reduced thermal degradation rate of epoxy resins in the primary stage, and promote the formation of carbon layer.

Thermo-oxidative and thermal degradation kinetics of silica/polymethyl methacrylate composites with electrostatic interaction phase interfaces

2019 ◽  
Vol 39 (2) ◽  
pp. 105-116 ◽  
Author(s):  
Hongyan Li ◽  
Yongqiang Fu ◽  
Hongli Liu ◽  
Cong Sun ◽  
Ruyi Li ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Thermal Degradation ◽  
Polymethyl Methacrylate ◽  
Electrostatic Interaction ◽  
Degradation Kinetics ◽  
Thermal Degradation Kinetics ◽  
Degradation Kinetic ◽  
Further Development ◽  
Kinetics Of ◽  
Insulation Performance

AbstractThe thermo-oxidative and thermal degradation kinetic parameters of polymethyl methacrylate-methacryloxyethyltrimethyl ammonium chloride/silica aerogel composites (PMMA-MTC/SA) were investigated in this paper and were compared with the thermal stability and thermal conductivity of different types of composites. As a composite with electrostatic interaction, the thermo-oxidative and thermal degradation activation energies (E) of PMMA-MTC/SA were 173.97 and 188.05 kJ/mol, respectively. The results indicated that the electrostatic interaction could indeed enhance the thermal stability of silica/polymethyl methacrylate composites on the premise of good mechanical properties and heat insulation performance. It is of great significance for the further development of silica-based thermal insulation composites.

Thermal degradation, kinetic analysis, and apoptosis induction in human melanoma for oleanolic and ursolic acids

2015 ◽  
Vol 125 (2) ◽  
pp. 759-768 ◽  
Author(s):  
Adriana Fuliaş ◽  
Ionuţ Ledeţi ◽  
Gabriela Vlase ◽  
Titus Vlase ◽  
Codruţa Şoica ◽  
...  
Keyword(s):  
Thermal Degradation ◽  
Kinetic Analysis ◽  
Human Melanoma ◽  
Apoptosis Induction ◽  
Degradation Kinetic ◽  
Thermal Degradation Kinetic

Thermal behavior and thermal degradation kinetic parameters of triterpene α, β amyrin

2017 ◽  
Vol 127 (2) ◽  
pp. 1757-1766 ◽  
Author(s):  
Walter Ferreira da Silva Júnior ◽  
Jonas Gabriel de Oliveira Pinheiro ◽  
Carlos Demócedes Luís de França Alm Moreira ◽  
André Luis Rüdiger ◽  
Euzébio Guimarães Barbosa ◽  
...  
Keyword(s):  
Thermal Degradation ◽  
Thermal Behavior ◽  
Kinetic Parameters ◽  
Degradation Kinetic ◽  
Thermal Degradation Kinetic
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