Journal of Polymer Science Part A Polymer Chemistry · 1996 · 28 citations · 0 references
Natural SciencesBiochemistryChemistryChemical KineticsPolymer ChemistryPolymer EngineeringAcrylic Resin MaterialsBiodegradationDegradation ProductsOrganic AcidsPolymer DegradationPolymer StabilityBiodegradation KineticsDegradation KineticsIonic StrengthIonic Strength DependenceIonic Strength EffectsPolymer Degradation KineticsPolymer Degradation MechanismsTemperature-dependent Degradation
Poly(acrylic acid) (PAA) was decarboxylated in aqueous solution as a function of pH and ionic strength in the temperature range 100–350°C. Degradation kinetics were first order with respect to acid functionality. The rate of decarboxylation at high pH (Eα = 51.1 kcal/mol) was much slower than that at low pH (Eα = 20.3 kcal/mol). At intermediate pH, the reactivity was found to depend on the degree of dissociation of PAA as a functions of ionic strength, pH, and temperature. No monomer was observed in the reaction product. © 1996 John Wiley & Sons, Inc.