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Inorganic nanoparticles such as calcium carbonate, silica, or hydrotalcite were dispersed in vinyl chloride prior to suspension polymerization. That led to the production of poly(vinyl chloride) (PVC) composite grains with higher porosity and different internal morphology from those of commercial PVC. The PVC/composite grain sizes and their distribution were also influenced by the presence of nanofillers...
The absorption of vinyl chloride (VC) on surface-treated light-grade and nano-scale calcium carbonate (CaCO 3 ), and VC suspension polymerization in the presence of CaCO 3 were carried out in a 5 L autoclave. It showed that the absorption of VC on CaCO 3 increased with the partial pressure of VC up to a critical point. Nano-scale CaCO 3 was more effective in absorbing...
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