The Diffusion of TEMPONE Radical in the Graft Copolymer of N-Isopropylacrylamide with Oligolactide in the Presence of Supercritical Carbon Dioxide by In Situ EPR Method

Impregnation of the thermoresponsive graft copolymer of N -isopropylacrylamide and oligolactide, (P(NIPAM- co -PLA)), with the composition 83.8 : 16.2 wt % with a stable nitroxyl radical, 4-oxo-2,2,6,6-tetramethyl-piperidine-1-oxyl (TEMPONE), in SC-CO 2 medium using a high-pressure reactor that allo...

Full description

Saved in:
Bibliographic Details
Published in:Russian journal of physical chemistry. B 2022-12, Vol.16 (7), p.1208-1212
Main Authors: Ivanova, T. A., Zubanova, E. M., Popova, A. A., Gromov, O. I., Golubeva, E. N., Ksendzov, E. A., Kostyuk, S. V., Timashev, P. S.
Format: Article
Language:English
Subjects:
Carbon dioxide
Chemistry
Chemistry and Materials Science
Diffusion coefficient
Electron paramagnetic resonance
Graft copolymers
Isopropylacrylamide
Physical Chemistry
Piperidine
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Impregnation of the thermoresponsive graft copolymer of N -isopropylacrylamide and oligolactide, (P(NIPAM- co -PLA)), with the composition 83.8 : 16.2 wt % with a stable nitroxyl radical, 4-oxo-2,2,6,6-tetramethyl-piperidine-1-oxyl (TEMPONE), in SC-CO 2 medium using a high-pressure reactor that allows recording electron paramagnetic resonance (EPR) spectra in situ is performed for the first time. The diffusion coefficient of TEMPONE in P(NIPAM- co -PLA) swelled in SC-CO 2 is estimated.
ISSN:1990-7931
1990-7923
DOI:10.1134/S1990793122070089