Viscoelastic Properties of Polypropylene Reinforced with Mica in and Transition Zones | Zendy

S. Farzaneh | Zendy; Abbas Tcharkhtchi | Zendy

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Viscoelastic Properties of Polypropylene Reinforced with Mica in and Transition Zones

Author(s) -

S. Farzaneh,

Abbas Tcharkhtchi

Publication year - 2011

Publication title -

international journal of polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.399

H-Index - 33

eISSN - 1687-9430

pISSN - 1687-9422

DOI - 10.1155/2011/427095

Subject(s) - mica , materials science , viscoelasticity , glass transition , polypropylene , composite material , volume fraction , dynamic mechanical analysis , modulus , dynamic modulus , thermal expansion , transition temperature , polymer , condensed matter physics , superconductivity , physics

The viscoelastic properties of mica-reinforced polypropylene (PP) was studied in temperature range between −30°C and 120°C. WLF equation permits determining the free volume fraction in and transitions regions. It was shown that the value of this parameter is lower for transition, indicating that the free volume and thermal expansion of region is more than that of region. At a 40% loading level, it was shown that the storage and loss modulus of mica-filled PP increases dramatically (in comparison with the pure polypropylene). The relative modulus does not change significantly at glassy state but it increases for the temperature higher than . It was also shown that mica does not affect the glass transition temperature but results in an increase in transition

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