Enhancing Productivity in Blown Film: a New Perspective on Additive Interactions and Optimizing Polymer Processing Additive Efficiency through Process Parameters, 2007 PLACE Conference

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To understand the impact on polymer processing additive (PPA) performance, the effects of interactions from hindered amine light stabilizers (HALS) and antiblock and the combined effects of extrusion temperature and shear rate were investigated. PPA performance was significantly affected by both temperature and shear rate, and also depended on the type of HALS present in the formulation. The effect of temperature was more significant than the effect of shear rate with respect to interactions involving antiblock. A new perspective concerning the temperature dependence of PPA performance in formulations containing antiblock is presented.