1 - 7 of 7 articles
Thermoresponsive diblock copolymers of N-vinylcaprolactam (VCL) with N-vinylimidazole (NVI) have been synthesized for the first time through two-stage controlled reversible addition–fragmentation chain transfer (RAFT) polymerization. The resulting diblock copolymers exhibit the same catalytic...
The effect of precursor composition and reduction conditions on the characteristics of niobium powders obtained by magnesium reduction were studied. The hypothesis of the possible increase in the specific surface area of the powders by a large factor by using complex oxides as precursors was...
Poly(L-lactic acid) and poly(D,L-lactic acid) samples have been synthesized through ring-opening polymerization. Studying homological series of two poly(lactic acids) by molecular hydrodynamics and optical methods has shown that poly-L-lactide chains in solution exhibit higher equilibrium...
It was experimentally determined that dispersed gold droplets during heating by an external source move toward the ore surface in pores under the action of the thermocapillary pressure. After melting of the gangue, the gold droplets are floated by gas bubbles. The flotation is accompanied by...
The isothermal diagrams of the Li2O–MnO–MnO2 system at an oxygen pressure up to 100 kPa were constructed, which allow to consistently represent phase transformations involving stable ternary phases: low-temperature spinel, cubic spinel c-LiMn2O4, tetragonal phase t-LiMn2O4, orthorhombic phase...
The reaction of TiF4 with a twofold excess of Ph2P(O)CH2C(O)Me (L) (one of the simplest and, very likely, most practically interesting representatives of a new class of organophosphorus ligands—diorganylphosphorylalkanones) in CH2Cl2 has been studied.
A process for manufacture of chitosan-based biodegradable biopolymer membranes suitable for medical applications was developed. A technology for inclusion of broad spectrum antibiotics into the chitosan membranes was elaborated. The effects of pH of the solution surrounding the membranes and the...
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