GMA-Based Emulsion Templated Macroporous Foams: Tailoring the Mechanical Properties by Nanoclay Loading

Abstract

Glycidyl methacrylate (GMA) based low density macroporous foams (polyHIPE foams) were synthesizedby high internal phase emulsion (HIPE) templating. Strengthen foams were produced by polymerizing thecontinuous phase of HIPEs consisting of GMA, 1,3-butanediol dimethacrylate (BDDMA) and nanoclay.In order to ensure the compatibility between the nanoclay particles and monomers, surface modifiednanoclay containing 25-30 wt. % of methyl dihydroxyethyl hydrogenated tallow ammonium was used.The composite foams were prepared by incorporating up to 5 wt. % of nanoclay particles. Compressivemodulus of the composite foams was improved by ca. 55 % as compared to neat polyHIPE foam. Thespecific compressive modulus and specific compressive strength were also significantly improved byincreasing the amount of nanoclay loading.