Synthesis,chacterization,and thermal study of terpolymeric resin derived from m-cresol,hexamine and formaldehyde

Terpolymeric resin was prepared from m-cresol (0.1m),hexamine (0.05m) and formaldehyde (0.2m) by acid catalyzed polycondensation method using 1m hcl in temperature range of 122-130°c.the resin was abbreviated as m-chf-i. the molecular weight of terpolymer was determined by non-aqueous conductometric titration technique. the structure of resin was determined by its elemental analysis,uv-vis,ir,and nmr data. the thermokinetic parameters were determined using freeman-carroll (fc) and sharp wentworth (sw) method in temperature range (410-485°c).the values of activation energies (ea),entropy (δs),and free energies (δg) were in good agreement. the order of degradation reaction determined by fc method was confirmed by sw method. © 2012 hindawi publishing corporation.