Nonisothermal crystallization of highly‐filled polyolefin/calcium carbonate composites

Abstract

Nonisothermal crystallization kinetics of highly‐filled polyolefin composites was studied by means of differential scanning calorimetry (DSC). Two types of commercial calcium carbonate based fillers (modified with stearic acid and nonmodified one) were used for our investigations. In order to evaluate the crystallization kinetics changes of composites, the Avrami theory modified by Jeziorny was used. Validity of mineral fillers modification with stearic acid has been proved by thermal analysis. Because of the suppression of the heterogeneous nucleation effect resulting from calcium carbonate with stearic acid modification, an increase in the processability of highly‐filled polyolefin cast films might occur. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 41201.

Melt fracture and rheology of linear low density polyethylene - calcium carbonate composites

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Calorimetric Investigations of Oriented Polypropylene Tapes and Self‐Reinforced Composites

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Polypropylene‐based composites containing sorbitol‐based nucleating agent and siloxane‐silsesquioxane resin

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“…As an effort to find lower cost additives able to tailor the crystallization kinetics of iPP containing sorbitol derivatives, a number of novel phenyl siloxane-silsesquioxane resins were synthesized in our laboratory. They contain silanol groups which are expected to interact with the functional groups of sorbitol, 24 as well as side alkyl groups that may promote blending with polyolefins. 25 Such resins were tested as fillers for iPP, together with commercial sorbitols as nucleating agents.…”