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  • WJPPS OCTOBER ISSUE PUBLISHED
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Abstract

SYNTHESIS AND THERMAL ANALYSIS OF AMBERLITE XAD-2 FUNCTIONALIZED WITH SULPHANILIC ACID

Pravin M. Keche*, Vinay V. Hiwase and R. Batra

ABSTRACT

The amberlite series XAD-2 resin was functionalized with sulphanilic acid. Selctive method diazo spacer technique (-N=N-) was used for the fictionalizations of amberlite XAD-2 and the product was abbreviated as SA-N=N-AXAD-2. Intermediates designed in reaction were characterized by FTIR study and final product were characterized by FTIR as well as TGA methods. Thermal decomposition of the functionalized polymer has been studied by thermogravimetric analysis. Thermokinetic parameters such as activation energy (Ea), Free energy change (ΔG) and entropy change (ΔS) of the degradation were resolved by Freeman-Carroll (FC) and Sharp-Wentworth (SW) method. The key advantage of FC method is to calculate both energy of activation (Ea) and order of reaction (n) in a solitary stage by keeping the heating rate constant. The energy of activation (Ea) and order of reaction (n) gained by the FC method was further confirmed by SW method. Thermal activation energy (Ea) calculate by these methods was found to be in close agreement with each other.

Keywords: Amberlite XAD-2; Diazo spacer; Functionalization; Resin; Thermal degradation.


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