TY JOUR TI INVESTIGATION OF THE ETHERIFICATION REACTION OF ORTHOPHOSPHORIC ACID WITH POLYETHYLENE OXIDE KW ETHERIFICATION REACTION KW IR SPECTROSCOPY KW ORGANOPHOSPHORUS BRANCHED IONOMERIC POLYOLS JO Herald of Technological University AU Sazonov, O.O. AU Zakirov, I.N. AU Kostikov, A.R. AU Nizamov, A.A. AU Davletbaev, R.S. PY 2025 IS 28 PB Kazan National Research Technological University