Issue Description


Authors : S. K. Kapsea, V. V. Hiwaseb, A. B. Kalambea, A. N. Guptac, S. S. Kasarlaa

Page Nos : 554-565

Description :
The resin PARG-II was derived from p-Hydroxyacetophenone, Resorcinol and Glycerol. PARG-II was synthesized by condensation of p-Hydroxyacetophenone (0.2M), Resorcinol (0.1M) and Glycerol (0.4M) in the presence of polyphosphoric acid (PPA). The tentative structure of resin was determined by elemental analysis, FT-IR and UV-VIS spectra. The molecular weight determination was carried out by non-aqueous conductometric titration. The thermo-kinetic parameters were determined using Freeman-Carroll (FC) and Sharp -Wentworth (SW) method in temperature range 203-377oC.The values of activation energies (Ea), apparent entropy (ΔS*) and Free energies (ΔG*) were in agreement. The order of degradation determined by FC method was confirmed by SW method.

Date of Online: 30 Jan 2014