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Effect of additives on the melt elastic modulus of rigid poly(vinyl chloride) formulations
Author(s) -
Gough Robert G.,
Chen IJen
Publication year - 1977
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760171012
Subject(s) - materials science , composite material , wax , calcium stearate , vinyl chloride , elastic modulus , shear modulus , polyethylene , paraffin wax , dynamic mechanical analysis , factorial experiment , low density polyethylene , polymer , raw material , organic chemistry , chemistry , statistics , mathematics , copolymer
A factorial experiment shows that calcium stearate and paraffin wax significantly decrease the melt elastic modulus of rigid poly(vinyl chloride) formulations. It is also concluded the melt elastic modulus of PVC is not significantly affected by the presence of methyltin stabilizer, acrylic processing aids or polyethylene wax. The only significant interaction found was that between temperature and concentration of paraffin wax. A regression model was derived for shear storage modulus (G′) at a deformation frequency of 100 radians/sec. No significant correlation between G′ and critical shear rate for melt fracture was discernable.