a Hydro Polymers Ltd., Aycliffe Industrial Estate, Newton Aycliffe, Co. Durham DL5 6EA UK
b School of Chemical and Life Sciences, Newcastle upon Tyne Polytechnic, Newcastle upon Tyne NE1 8ST UK
Abstract:
The determination of sodium bicarbonate concentrations in PVC cellular compounds by DSC has revealed a linear relationship between concentration and the decomposition enthalpy of the compound. Both the detection limit and the sensitivity of the method are reported. Furthermore, it is shown that the detection limit is significantly less than the concentration of the compound known to be present in typical cellular polymer formulations. Therefore, the DSC method described herein could be used for the analysis and quality control of sodium bicarbonate in PVC cellular compounds.