Fabrication, microstructural analysis, and properties of poly(methyl methacrylate)/calcium carbonate particulates nanocomposites

Abstract

ABSTRACT:The poly(methyl methacrylate) (PMMA)/nanometer-scaled calcium carbonate particulate nanocomposites prepared by means of the gas-synthesis was investigated. PMMA absorbed the saturated solvent mixture (the ratio of calcium chloride dehydrate and methanol at 1.5, 4.5, and 6.0 g/100 g) at 40-60• and then desorbed the methanol completely and then CO 2 gas diffused into the desorbed completely in specimens for 48 h at 60• , approximately 30-nm calcium carbonate particulates were precipitated evenly to distribute in the PMMA matrix. The content of calcium carbonate particulates decreases with increasing concentration of the saturated solvent mixture. The transmittance of