Characterization of highly filled wood flour-polyvinyl chloride composites: Dynamic mechanical and dielectric analysis

Viscoelastic and dielectric properties of composites with polyvinyl chloride as major matrix constituent, ethylene vinyl acetate (EVA) as polymeric plasticizer, and wood flour (WF) and fly ash (FA) as filler have been studied. The effect of variation of WF, FA, and EVA on storage modulus E′, loss mo...

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Bibliographic Details
Published in:Polymer engineering and science 2010-06, Vol.50 (6), p.1253-1260
Main Authors: Marathe, D.S., Joshi, P.S.
Format: Article
Language:English
Subjects:
Applied sciences
Chlorides
Composites
Constituents
Dielectric properties
Dielectrics
Dynamic tests
Dynamics
Ethylene vinyl acetates
Exact sciences and technology
Forms of application and semi-finished materials
Plasticizers
Polymer industry, paints, wood
Polyvinyl chloride
Technology of polymers
Viscoelasticity
Wood
Wood composites
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Summary:Viscoelastic and dielectric properties of composites with polyvinyl chloride as major matrix constituent, ethylene vinyl acetate (EVA) as polymeric plasticizer, and wood flour (WF) and fly ash (FA) as filler have been studied. The effect of variation of WF, FA, and EVA on storage modulus E′, loss modulus E″, and glass transition temperature, Tg has been evaluated using dynamic mechanical analysis (DMA). Effect on permittivity ε′ and conductivity is evaluated using dielectric analysis. The results show considerable influence of constituents of the composite on the properties evaluated. DMA shows that WF contributes to an increase in Tg, E′, and E″ and a decrease in loss tangent, tan δ. The FA content has insignificant effect on these properties. Increasing WF content increases ε′. POLYM. ENG. SCI., 2010. © 2010 Society of Plastics Engineers
ISSN:0032-3888
1548-2634
DOI:10.1002/pen.21656