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The effect of modified pluronic on the distribution of fillers in the polyvinyl chloride matrix
Author(s) -
Rozik Nehad N.,
AbdEl Messieh S. L.,
AbdEl Nour K. N.
Publication year - 2009
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.31217
Subject(s) - materials science , polyvinyl chloride , composite material , conductivity , polymer chemistry , chemical engineering , chemistry , engineering
Pluronic was modified by using maleic anhydride (MA) and was characterized by means of FTIR and 1 H NMR. Polyvinyl chloride (PVC) was blended with different contents of modified pluronic (MPL). After 20% by weight MPL, no significant change was noticed in either the electrical or the mechanical properties. The addition of 10 wt % MPL to PVC loaded with different contents of titanium oxide (TiO 2 ) and sodium bentonite was chosen to act as a dispersing agent for the two types of fillers. This result was obtained through the measurements of permittivity ε′ and dielectric loss ε″ at the frequency range (10 2 −10 5 Hz) in addition to the electrical conductivity (σ). According to Arrhenius equation, the activation related to both conductivity E σ and relaxation time E τ in addition to the experimental σ o were found to confirm the validity of compensation law for the semiconducting PVC system. The increase of ε′ and ε″ by increasing filler content in the presence of 10% MPL in comparison with those before the addition of such concentration of MPL indicates a homogenous distribution of filler in the PVC matrix. This result finds further justification through the mechanical measurements and the scanning electron micrographs. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010