Tin-Tin Chen

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The flexural properties and failure morphologies of dimethacrylate-copolymer composites reinforced with either S2-glass or quartz fibres ( approximately 33-66 vol%) were examined after hydrothermal ageing (0-3 mon at 37 degrees C). Initially the S2-glass composites were generally stiffer and stronger than comparably reinforced quartz composites, but within(More)
Five binary formulations were prepared from methyl methacrylate (MMA) and methacrylic acid (MAA) monomers, and six ternary formulations were prepared from polysols of 30% wt polymethyl methacrylate (PMMA)/MMA and MAA. Using thermal analyses (DSC and TGA) the polymerization kinetics, condition of postcuring, relative amount of residual monomers, and glass(More)
Steady-state water sorption due to hydrothermal ageing (37 degrees C) was determined via gravimetric methods for both an unreinforced dimethacrylate copolymer network and for composites of the copolymer reinforced with two different silicate yarn products - S2-glass(R) and quartz. The copolymer sorbed 4.9+/-0.3 wt%, and the composites sorbed 0.5-2.5 wt%.(More)
This study elucidates the size effect on dye-sensitized solar cells (DSSCs) by synthesizing highly uniform hierarchical hollow sphere TiO2 samples, with the diameters from 220 nm to 800 nm. Experimental results indicate that the optimum conversion efficiency using N719 dye can be achieved around 5.5%, as the diameter of hierarchical hollow spheres is(More)
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