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IJSTR >> Volume 2- Issue 10, October 2013 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Synthesis, Characterization, Curing And Thermal Decomposition Kinetics Of Bisphenol-A Based Polybenzoxazine

[Full Text]



D. L Jayamohan Das, DR R Rajeev, DR R. S Rajeev, DR K. S Santhosh kumar



Index Terms: Activation energy (Ea), Aniline, Bisphenol-A-based benzoxazine, Chloroform, Curing kinetics, Differential scanning calorimetry(DSC), Nano Clay(NC), para-formaldehyde,Thermal properties, Thermogravimetric analysis(TGA).



ABSTRACT: A bisphenol-A-aniline based Polybenzoxazine was synthesized by reacting bisphenol-A with formaldehyde and aniline. The chemical structure was characterized by FT-IR analysis. The polymerization behavior of the monomer was monitored by differential scanning calorimetry (DSC) and FT-IR. The curing kinetics was studied by non-isothermal DSC and kinetic parameters were determined at heating rate (5, 10,15and 20˚C/min) from RT - 400˚C. The kinetic of thermal decomposition was investigated with thermogravimetric analysis by conducting the measurements at four different heating rates (5, 10,15and 20˚C/min) from RT - 900˚C/min. Different kinetic models such as, Flynn-wall-Ozawa method, Kissinger method were adopted for both non-isothermal curing kinetics and decomposition kinetics.



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