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Studies on the polyblends of poly(vinyl chloride) with various methacrylate copolymers, melt rheological properties. II
Author(s) -
Saroop U. K.,
Sharma K. K.,
Jain K. K.,
Misra Ashok,
Maiti S. N.
Publication year - 1989
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.1989.070380802
Subject(s) - materials science , die swell , copolymer , rheology , methyl methacrylate , acrylate , vinyl chloride , ethyl acrylate , polymer chemistry , methyl acrylate , methacrylate , composite material , butyl acrylate , shear rate , polymer , extrusion
Studies have been made on the melt rheological properties of poly(vinyl chloride) (PVC) with copolymers of methyl methacrylate (MMA) and methyl acrylate (MA), ethyl acrylate (EA), butyl acrylate (BA), and 2‐ethyl hexyl acrylate (EHA) at a blending ratio of 80:20. Effect of blend composition on shear stress–shear rate, melt viscosity, melt elasticity, and extrudate distortion have been studied. A significant decrease in the melt viscosity is observed on incorporation of low T g , acrylate copolymers such as those with BA and EHA, thereby reducing the processing temperature. First normal stress and die swell ratio also decreases with an increase in the side chains of acrylate copolymer. PVC blended with P(MMA‐co‐BA) and P(MMA‐co‐EHA) is sensitive to both temperature and shear stress.