Anticorrosively Enhanced PMMA−Clay Nanocomposite Materials with Quaternary Alkylphosphonium Salt as an Intercalating Agent

• DOI: 10.1021/cm010337f
• Publication Date: 2002-07-26T04:45:58Z
• Authors: Jui-Ming Yeh; Shir-Joe Liou; Ching-Yi Lin; Chiao-Yu Cheng; Ya-Wen Chang; Kueir-Rarn Lee
• Keywords: Thermogravimetric analysis; Thermal Stability; Poly(N-isopropylacrylamide); In situ polymerization

A series of polymer−clay nanocomposite (PCN) materials that consisted poly(methyl methacrylate) (PMMA) and layered montmorillonite (MMT) clay were prepared by effectively dispersing the inorganic nanolayers MMT in an organic PMMA matrix via situ thermal polymerization. Organic methyl methacrylate monomers first intercalated into interlayer regions organophilic hosts followed a typical free radical The as-synthesized PCN characterized infrared spectroscopy, wide-angle powder X-ray diffraction, transmission electron microscopy. coatings with low loading (e.g., 1 wt %) on cold-rolled steel found much superior anticorrosion over those bulk based electrochemical measurements corrosion potential, polarization resistance, current, impedance spectroscopy 5 % aqueous NaCl electrolyte. molecular weights extracted from determined gel permeation chromatography tetrahydrofuran as eluant. Effects material composition barrier, optical clarity, stability along materials, form both free-standing film fine powder, also studied permeability analysis, ultraviolet−visible spectra, differential scanning calorimetry, thermogravimetric respectively.