| Affiliation: | (1) Department of Chemical Physics & Macromolecular Chemistry, Kazakh National University, Karasai Batyra 95, 480012 Almaty, Kazakhstan;(2) Department of Pharmaceutical Sciences, University of Strathclyde, 27 Taylor St., G4 0NR Glasgow, Scotland, UK;(3) Departments of Pharmaceutics and Biomedical Engineering, Purdue University, West Lafayette, IN 47907, USA |
| Abstract: | Complexes formed from poly(acrylic acid) and poly(2-hydroxyethyl acrylate) were studied in aqueous solutions by viscometric, turbidimetric, FTIR spectroscopic, and thermogravimetric analysis methods. The formation of interpolymer complexes stabilized by hydrogen bonds was observed. It was found that the compositions of these interpolymer complexes are strongly dependent on the concentration of polymers, the order of mixing the solutions, and the pH. It was demonstrated that the complexation ability of poly(2-hydroxyethyl acrylate) is relatively low compared to other known nonionic water-soluble polymers. However, it can be significantly increased via hydrophobic modification of the poly(acrylic acid) using cetyl pyridinium bromide. |
