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Abstract

The objective of this work is to investigate the effect of using different types of nanoclay fillers on the cell morphology and mechanical properties of rigid PVC foam. Four different types of commercially available nanoclays were used: natural calcium montmorillonite (unmodified), sodium montmorillonite modified with a quaternary ammonium salt, aluminum magnesium silicate clay, and magnesium lithium silicate clay. The individual and combined effect of nanoclay concentration and blowing agent content on the foam density and mechanical behavior are reported. Optical Microscopy, SEM, XRD, and TEM imaging were used in the analysis of foam cell morphology and the dispersion and exfoliation of nanoclays in the polymer matrix. Specific compression strength, specific flexural modulus, and density were found to improve by introducing nanoclay in the polymer matrix whereas tensile strength and modulus of elasticity showed some deterioration with the presence of nanoclay. Meanwhile, impact strength and specific flexural strength did not show any significant changes

Keywords

polyvinyl chloride PVC foam PVC-Nanoclay nanoclay composities.

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Extrusion of Rigid PVC Foam with Nanoclay: Synthesis and Characterization

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