Abstract
The effect of the micrometer and nanometer magnesium hydroxide (MH) as fillers on the thermal stability of poly(vinyl chloride) was investigated by the thermogravimetric analysis (TGA) technique. The poly(vinyl chloride)/magnesium hydroxide (PVC/MH) composites were prepared by the solution blending method, respectively. The results showed that the PVC/MH composites with the nanometer MH filler (PVC/nMH) had the better thermal stability than that with the micrometer MH filler (PVC/uMH) with the same amount of MH filler added. And the initiating temperature (Ti) of the dehydrochlorination reaction increased with the amount of MH filler added. A facile chemical analysis method was developed to examine the thermal stabilising mechanism of MH fillers in the PVC/MH composites after the samples pyrolysed.
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