engleski

Properties of Recycled Material Containing Poly(vinyl Chloride), Polypropilene and Calcium Carbonate Nano-Filler

Even at low content, polypropylene significantly worsens mechanical properties of the recycled PVC composite i.e. tensile strength at break and elongation at break. But, if small quantities of surface modified nano-filler calcium carbonate is added an applicable composite which contains 10 to 30% of waste material can be made. It was determined that nano-sized calcium carbonate lowers melting point of polypropylene, perheaps by changing its crystalline form and has no influence on thermooxidative degradation of poly(vinyl chloride). Addition of nano-filler slightly lowers the surface free energy of the composites what is more prone when the low content of polypropylene is present. The recovery of tensile strength and elongation at break occurs and those properties reach the highest value at about 6 % of CaCO3.

poly/vinyl chloride; polypropilene; calcium carbonate; compatibilization

nije evidentirano