Effect of nanoparticles on the thermal stability of PMMA nanocomposites prepared by in situ bulk polymerization |
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| Authors: | Wantinee Viratyaporn Richard L Lehman |
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| Institution: | (1) AMIPP Advanced Polymer Center, School of Engineering, The State University of New Jersey, Rutgers, Piscataway, NJ 08854-8065, USA; |
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| Abstract: | Al2O3 and ZnO filled poly(methyl methacrylate) nanocomposites were synthesized by free radical (bulk) polymerization. Efficient
dispersion was achieved by predispersing the nanoparticles in propylene glycol methyl ether acetate (PGMEA) followed by ultrasonication
of nanoparticles into the PMMA syrup. Thermal analysis confirms chemisorption between PGMEA and metal oxide particles. The
addition of nanoparticle affects degradation mechanism and consequently improves thermal stability of PMMA. The reduction
of polymer chain mobility and the tendency of nanoparticles to eliminate free radicals are the principal effects responsible
for these enhancements. |
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