Korean Journal of Chemical Engineering, Vol.30, No.8, 1652-1658, 2013
Blends of polyurethane-polymethyl methacrylate/TiO2-based composites
Polyurethanes (PUs) prepolymer was prepared by the reaction of toluene-2,4-diisocyanate (TDI) and poly caprolactone diols and the chain was further extended with 1,4-butane diol (1,4-BDO) to get final polyurethane (PU). FTIR spectra of the monomers, PU prepolymer, chain extender and final PU confirmed the reaction progress. A series of blends were prepared by varying the percent compositions of prepared PU, procured polymethyl methacylates (PMMA) and titanium dioxide (TiO2). Pellets were formed from the prepared blends (PU-PMMA/TiO2) using a self-designed
mechanical tool. Scanning electron microscope (SEM) images were also taken to confirm the incorporation of the TiO2 contents into the prepared blends. Mechanical properties such as hardness and compressive strength were studied and discussed. The results of the study reveal that the blended sample having 80% PU, 20% PMMA content with 2.5 g TiO2 in 100 g mixture of PU and PMMA is very suitable for suggesting dental materials.
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[Cited By]
Lee DU, Yong DK, Lee HK, Choi SJ, Yoo JJ, Lee HI, Kim SH, Lee KY, Lee SG, Korean Chemical Engineering Research , 52 (3), 382, 2014
Lee EJ, Park HJ, Kim SM, Lee SG, Lee KY, Korean Chemical Engineering Research , 56 (3), 343, 2018
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