| Objective:To discover an effective way to enhance the behavior of denture base resin and provide the reference for further study in denture base materials, PMMA/Montmorillon-ite nanocomposites were preparated by Suspension Polymerization and Characterized with Fourier transform infrared (FT-IR), thermogravimetry (TG), X-ray diffraction analysis (XRD) and transmission electron microscopy (TEM)Methods:1.Poly (methyl methacrylate) /montmorillonite (PMMA/MMT) nanocomposites were prepared via suspension polymerization and characterized with FT-IR, XRD and TEM in order to study the influnce on the structure of the nanocomposites.2.The effect of MMT on the properties of the nanocomposites were investigated by friction and wear test. What's more, the microstructure of the compounds was analyzed by SEM.Results:1.The lamellose spacing of MMT amplified after being modified with hexadecylallyldimethyl ammonium chloride(HADC). PMMA had strong interaction with the modified MMT.2.The results showed that the friction and wear behavior of the nanocomposites have been enhanced compared with the normal dental material.Conclusions:1.PMMA/MMT nanocomposites could be successfully synthesized via suspension polymerization, when hexadecylallyldimethyl ammonium chloride (HADC) were used as modifiers, and P-HADC exhibits intercalated structure.2.The mechanical function of the compounds may be effected by the content of the MMT. The presence of MMT layers performed a positive effect on the mechanical properties of composites. The friction and wear behavior of PMMA/MMT nanocompounds could be enhanced due to incorporation of nano MMT...
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