Blends of Recycled Polymers

In recent years, there has been considerable attention given to recycling polymers [90 to 92]. This involves primarily polyethylene, polypropylene, polystyrene, and polyvinyl chloride. If a neat polymer is recycled and processed into polymer products, it will probably have suffered some molecular weight degradation or crosslinkage and loss of stabilizers that were contained in the original material. 

however, the various recycled polymers dted above are blended as part of the recycling process, the damage to the mechanical (ultimate) properties of the products is considerably reduced. This is notably case in binary recycled blends of polyolefins with polystyrene or 

Denbigh, Principles of Chemical Equilibrium, Gambridge Univ. Press, London (1966) 

Hildebrand and R. L. Scott, Solubility of Non-Electrolytes, 3 ed.. Reinhold, New York (1950) 

Olabisi, L. M. Robeson, and M. T. Shaw, Polymer-Polymer Miscibility, Academic Press, New 

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PET/PE/PP blend of recycled polymers, noncompatibilized, fracture surface [2] ... 

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