Macromolecular Materials and Engineering · 2011 · 13 citations · 45 references
Natural SciencesMaterials EngineeringMaterials SciencePolymer ChemistryPolymer MaterialsRheologyCrystallization AnalysisCrystallization ProcessesPolymer CharacterizationPolymer CrystallinityPolymer CrystallizationPolymer PhysicsCoating DeteriorationCrystallizationCrystallization BehaviorCrystallization KineticsCrystallization MechanismsFlow-induced CrystallizationPolymer Crystallization KineticsShear-induced Crystallization
Abstract The influence of Ca‐stearate‐coated CaCO 3 and talc on the quiescent and flow‐induced crystallization of iPP is studied using different methods. Comparison of rheometry and DSC shows that rheometry is an interesting tool to monitor crystallization kinetics. It is observed that the Ca‐stearate coating degrades at commonly used annealing temperatures, influencing the crystallization behavior of the CaCO 3 ‐containing polymer. WAXD indicates that the CaCO 3 does not significantly influence the degree of crystallinity. As shear intensifies, both the pure and particle‐containing polymers crystallize faster; however, their behavior also becomes increasingly similar. There are indications that shear influences the organization of the CaCO 3 aggregates. magnified image
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Flow-induced shish-kebab precursor structures in entangled polymer melts
Rajesh H. Somani, Ling Yang, Lei Zhu et al. · Polymer · 2005 · 484 citations · Full text