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Studies on the properties of suspensive polyvinyl chloride grains separated blowing away from fluid bed

Wąsicki A.

Ars Separatoria Acta

2002

No. 1

149-159

The studies on properties of polyvinyl chloride grains separated by blowing them away from a fluid bed at three air flow rates have been carried out. Seven trade batches of PVC obtained by suspensive method have been tested. Fikentscher number, thermal stability, plasticizer absorptivity, swelling in plasticizer as well as mixing with plasticizer have been determined. The differences in grain structure in the individual fractions were found in all the batches under study. These differences affect polyvinyl chloride properties (mainly swelling), plasticizer absorptivity and thermal stability.