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Melt flow behavior of blends from poly(vinyl chloride) and epoxidized natural rubber
Author(s) -
Varughese K. T.,
De P. P.,
Nando G. B.,
De S. K.
Publication year - 1987
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.730090406
Subject(s) - rheometer , melt flow index , materials science , natural rubber , vinyl chloride , composite material , viscosity , rheology , polymer blend , arrhenius equation , polymer chemistry , activation energy , chemistry , polymer , copolymer , organic chemistry
Blends from poly(vinyl chloride) (PVC) and epoxidized natural rubber (ENR) were prepared in a Brabender plasticorder by the melt blending technique. The melt flow behavior of these blends with respect to blend ratio and temperature has been examined using a melt flow indexer and capillary rheometer. ENR decreases the Brabender torque, increases the melt flow index (MFI), and decreases the melt viscosity of PVC in the blends. Arrhenius plots were used to study the effect of temperature on melt flow index (MFI) and viscosity. Moreover, the flow behavior index ( n ′) obtained from capillary rheometer data was found to be dependent on temperature and blend ratio.