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Interaction effects and property retention in poly(vinyl chloride) compounds
Author(s) -
Schreiber H. P.,
Checkland J.
Publication year - 1984
Publication title -
journal of vinyl technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 35
eISSN - 1548-0585
pISSN - 0193-7197
DOI - 10.1002/vnl.730060106
Subject(s) - plasticizer , vinyl chloride , polyvinyl chloride , polymer , materials science , filler (materials) , base (topology) , volume (thermodynamics) , chemical engineering , polymer chemistry , composite material , thermodynamics , mathematics , mathematical analysis , physics , engineering , copolymer
The influence of thermodynamic interactions among the components of a polymer system on mechanical properties and their retention on aging has been investigated. The systems considered involve plasticized poly(vinyl chloride)(PVC), and CaCO 3 fillers. Inverse gas chromatography was used to measure interaction parameters, and to express these in terms of acid‐base concepts. Interaction data were obtained over a wide temperature range. It was shown that the volume of plasticizers retained by the PVC correlates with the measured interaction parameters. Similarly, the interaction parameters identify a CaCO 3 filler preferred for reinforcing rigid PVC, and a different CaCO 3 filler for use in given PVC‐plasticizer combinations. The mechanical properties of filled PVC (up to 40 phr CaCO 3 ), and particularly the ultimate properties of the compounds, correlate with interaction concepts, as do property retention data after accelerated aging of the compounds at 100°C. It is concluded that component interaction parameters may provide useful guidelines to the formulation of compounds with superior properties and reduced property losses due to aging.