Molecular properties of conjugates formed by synthetic hydrophilic polymers and sterically hindered phenols

0348269 - ÚMCH 2011 RIV RU eng J - Journal Article
Domnina, N. S. - Sergeeva, O. Yu. - Koroleva, A. N. - Rakitina, O. V. - Dobrun, L. A. - Filippov, Sergey K. - Mikhailova, M. E. - Lezov, A. V.
Molecular properties of conjugates formed by synthetic hydrophilic polymers and sterically hindered phenols.
Polymer Science Series A. Roč. 52, č. 9 (2010), s. 900-906. ISSN 0965-545X. E-ISSN 1555-6107
Institutional research plan: CEZ:AV0Z40500505
Keywords : antioxidant * conjugates * light scattering
Subject RIV: CD - Macromolecular Chemistry
Impact factor: 0.659, year: 2010

Water-soluble conjugates are prepared via the chemical modification of poly(vinyl alcohol) and poly(ethylene glycol) by antioxidants taken from the family of sterically hindered phenols. It is shown that an increase in the amount of antioxidant groups incorporated into the poly(vinyl alcohol) chain leads to a decrease in the dimensions of single conjugate molecules owing to attraction of hydrophobic groups. Poly(ethylene glycol) molecules carrying end groups of sterically hindered phenols form micellar aggregates that are absent in the solution of the initial polymer. It is found that the presence of hydrophobic end groups in poly(ethylene glycol) molecules causes a sharp reduction in the lower critical solution temperature of a solution relative to that of the initial polymer.
Permanent Link: http://hdl.handle.net/11104/0006042