Affiliation: | 1. Department of Polymer Engineering, University of Chemical Technology and Metallurgy, 1756 Sofia, Bulgaria;2. Ingénierie et Architectures Macromoléculaires, Institut Charles Gerhardt ‐ UMR(CNRS) 5253, Ecole Nat Sup de Chimie de Montpellier, 8 Rue de l'Ecole Normale, F‐34296, Montpellier Cedex, France;3. Department of Organic Chemical Technologies, Burgas Prof. Assen Zlatarov University, 8010 Burgas, Bulgaria |