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Morphology, Crystallization Behavior, and Mechanical Properties of Isotactic Poly(propylene) Nanocomposites based on Organophilic Boehmites

✍ Scribed by Rouven C. Streller; Ralf Thomann; Olaf Torno; Rolf Mülhaupt

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
946 KB
Volume
294
Category
Article
ISSN
1438-7492

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✦ Synopsis

Abstract

iPP/organoboehmite nanocomposites were prepared to examine the influence of both boehmite crystallite size and organophilic boehmite modification on morphology development, thermal, and mechanical properties. Effective deagglomeration of the micrometer‐scaled organoboehmites was achieved, producing uniform dispersions of nanometer‐scaled boehmite crystallite assemblies within the iPP matrix. CS‐modified organoboehmites gave improved stiffness at the expense of elongation at break and impact strength. In contrast to CS, boehmites modified with OS2 lowered iPP crystallization (“anti‐nucleation effect”) without affecting crystal modification, affording iPP nanocomposites with significantly larger elongation at break and strain induced crystallization.

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