Study on thermal decomposition of calix[6]arene and calix[8]arene

Chennakesavulu, K and Basariya, M R and Bhaskar Raju, G and Prabhakar, S (2011) Study on thermal decomposition of calix[6]arene and calix[8]arene. Journal of Thermal Analysis and Calorimetry, 103 (3). pp. 853-862.

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Thermal decomposition kinetics of calix[6]arene (C6) and calix[8]arene (C8) were studied by Thermogravimetry analysis (TG) and Differential thermal analysis (DTA). TG was done under static air atmosphere with dynamic heating rates of 1.0, 2.5, 5.0, and 10.0 K min(-1). Model-free methods such as Friedman and Ozawa-Flynn-Wall were used to evaluate the kinetic parameters such as activation energy (E (a)) and pre-exponential factors (ln A). Model-fitting method such as linear regression was used for the evaluation of optimum kinetic triplets. The kinetic parameters obtained are comparable with both the model-free and model-fitting methods. Within the tested models, the thermal decomposition of C6 and C8 are best described by a three dimensional Jander's type diffusion. The antioxidant efficiency of C6 and C8 was tested for the decomposition of polypropylene (PP).

Item Type:Article
Official URL/DOI:
Uncontrolled Keywords:Calix[n]arenes; Thermal decomposition; Activation energy; Model-free and model-fitting methods; Jander's type diffusion
Divisions:NML Chennai
ID Code:2997
Deposited By:Dr. A K Sahu
Deposited On:14 Jun 2011 16:42
Last Modified:21 Nov 2011 12:04
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