Ivan Ristic

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Poly(D,L-lactide) synthesis using tin(II) 2-ethylhexanoate initiated ring-opening polymerization (ROP) takes over 30 hours in bulk at 120 °C. The use of microwave makes the same bulk polymerization process with the same initiator much faster and energy saving, with a reaction time of about 30 minutes at 100 °C. Here, the poly(lactide) synthesis was done in(More)
OBJECTIVES To evaluate the influence of education and training on quality of tooth color matching. MATERIAL AND METHODS Dental students (N = 174), matched the color of eight shade tabs in a viewing booth, using VITA Linearguide 3D-Master shade guide. The experimental group had color education and training between the before and after session. The control(More)
This paper presents a synthesis of iron(II) fumarate based on the conversion of fumaric acid into disodium fumarate in molar ratio of 1:2 by the neutralization process. Disodium fumarate, as intermediate, in a nitrogen atmosphere it reacts with iron(II)-sulfate in molar ratio of 1:1. The obtained iron(II) fumarate is a reddish precipitate with the purity of(More)
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