It can be seen from the figure that heating of PVC sample milled with CaO or Ca(OH)2 in the absence of Ni(OH)2 to 700 ◦C only shows dominant H2O peak around 500 ◦C due to the absorbed moisture or decomposition of Ca(OH)2.
It can be seen fromthe figure that heating of PVC sample milled with CaO or Ca(OH)2in the absence of Ni(OH)2 to 700 ◦C only shows dominant H2O peakaround 500 ◦C due to the absorbed moisture or decomposition ofCa(OH)2.