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Thermal Stabilities of Poly(Vinyl Chloride)/Calcium Carbonate (PVC/CaCO3) Composites |
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| Authors: | Peng Liu Mingfei Zhao Jinshan Guo |
| Institution: | 1. Institute of Polymer Science and Engineering, College of Chemistry and Chemical Engineering , Lanzhou University , Gansu, People's Republic of China pliu@lzu.edu.cn;3. Institute of Polymer Science and Engineering, College of Chemistry and Chemical Engineering , Lanzhou University , Gansu, People's Republic of China |
| Abstract: | Poly(vinyl chloride)/calcium carbonate (PVC/CaCO3) composites with micrometer or nanometer CaCO3 as fillers were prepared by the solution blending method. The thermogravimetric analysis (TGA) of the composite films conducted in N2 atmosphere showed that the addition of the CaCO3 fillers could improve their thermal stabilities. It was also found that the nanometer CaCO3 filler provided better thermal stabilities than the micrometer fillers even with a smaller amount. The mechanism of the improvements was investigated by a facile chemical analysis developed to examine the thermal stabilizing effect of calcium carbonate particles with different sizes in PVC/CaCO3 composites after the pyrolysis of the samples in an air atmosphere in an oven. |
| Keywords: | poly(vinyl chloride)/calcium carbonate (PVC/CaCO3) composites micrometer/nanometer filler thermal stability |