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Title: Effect of di(2-ethyl hexyl phthalate)/epoxidized soybean oil and calcium stearate/zinc stearate ratios on the tensile properties of plasticized PVC formulations. A study for calcium stearate rich formulations
Author: Gonzalez-Ortiz, L.J.
Arellano, M.
Sanchez-Pena, M.J.
Issue Date: 2009
Abstract: Two series of plasticized PVC formulations were prepared, containing one of the following di (2-ethyl hexyl phthalate)/epoxidized soybean oil ratios (phr/phr): (a) 35/3, (b) 55/3, (c) 45/0 or, (d) 45/6. For each ratio, the following calcium stearate/ zinc stearate ratios (phr/phr) were considered: (a) 0.6/0.4, (b) 0.8/0.2 or, (c) 1.0/0.0; all formulations were prepared with a total content of stearate(s) of 1.0 phr. The difference between the series was the preheating of stearates (150 °C, 90 min), carried out before the dry-blend preparation. The changes of tensile properties produced by the degradation process were measured in ribbons obtained by extrusion.
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