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Use of Polymeric Compatibilizers in Polypropylene/Calcium Carbonate Composites

J. David Tucker Patricia L. Lear¹ Gregory S. Atkinson¹ Sunggyu Lee^1† Seung Jong Lee²

Kimberly Clark Corp., 1400 Holcomb Bridge Rd.,Roswell, GA 30075, USA ¹Department of Chemical Engineering, The University of Missouri-Columbia, Columbia, MO 65211, USA ²School of Chemical Engineering, Seoul National University, Seoul 151-742, Korea

leesu@missouri.edu

Korean Journal of Chemical Engineering, September 2000, 17(5), 506-509(4), 10.1007/BF02707157

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Abstract

The effects of compatibilizing agents on the mechanical properties, viscoelastic properties, and morphology of polypropylene filled with calcium carbonate composites are investigated. It is found that the use of PP-g-MA and PP-g-AA significantly increases the tensile strength and improves particle dispersion and interfacial adhesion. The higher effect of compatibilization is obtained by using PP-g-MA as a compatibilizer. The results on the dynamic thermomechanical properties, viscoelastic properties, and SEM pictures also support the improved interfacial characteristics. It is also found that there exists a limiting amount of PP-g-MA at about 5% beyond which a further increase in the tensile strength is not obtained. The use of untreated calcium carbonate or SEBS-g-MA does not allow films to be drawn for the purpose of testing.

Keywords

PP-g-MA Polymer Compatibilizer Polypropylene Composite Thermomechanical Properties Calcium Carbonate

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