Atsuko Yamanaka

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Mixed silanes, 3-mercaptopropyltrimethoxysilane and 3-methacryloxypropyltrimethoxysilane, were used as a primer for adhesion of poly(methyl methacrylate) to stainless steel and glass plate. The tensile bond strength of the resin to those substrates was measured after immersion in water at 37 degrees C for 3 days. The mean bond strengths of the resin to the(More)
Molecular composite PMMA resin (Oct-PPTA-PMMA) can be reinforced with poly-N-octyl-p-phenylene terephthalamide (Oct-PPTA) as rigid core molecule. Compounding 3 wt% of Oct-PPTA to PMMA increased compressive, diametral and bending strength by 10 to 15%. The molecular interaction between Oct-PPTA as the core molecule and PMMA as a polar matrix and polystyrene(More)
The influence of the weight average molecular weight and the molecular weight distribution of poly(acrylic acid) on the tensile bond strength of polycarboxylate cement was studied. The bond strength of the cement significantly affected not only the mean molecular weight but also the distribution. The tensile bond strength of the cement prepared from an(More)
The stable isotope analysis of non-exchangeable hydrogen in food materials has been believed as a powerful tool for tracing geographical origins and delivery of the materials. However, little information is available for the D/H exchanges even in hydrophobic molecules, which leads to potential uncertainty on the observed results. To further evaluate the(More)
Mechanical properties of heat curing acrylic resin obtained by polymerization for long period of heating at a temperature lower than conventional temperatures were examined. The mechanical properties of the resin were lower than those of the resin cured at 100 degrees C. The results of high performance liquid chromatography and differential scanning(More)