Interpolymer complexes of Eudragit® copolymers as novel carriers for colon-specific drug delivery

Bukhovets, A. V., Fotaki, N., Khutoryanskiy, V. V. ORCID: https://orcid.org/0000-0002-7221-2630 and Moustafine, R. I. (2020) Interpolymer complexes of Eudragit® copolymers as novel carriers for colon-specific drug delivery. Polymers, 12 (7). 1459. ISSN 2073-4360 doi: 10.3390/polym12071459

Abstract/Summary

Interpolymer complexes (IPC) based on Eudragit® EPO and Eudragit® S100 were investigated as potential carriers for oral controlled drug delivery to the colon. IPC samples were prepared by mixing copolymer solutions in organic solvents (ethanol, isopropanol:acetone mixture (60:40, % v/v) and tetrahydrofuran). According to the data of elemental analysis, FTIR-spectroscopy, X-ray photoelectron spectroscopy and thermal analysis these IPCs have excess of anionic copolymer (Eudragit® S100) in their structure; they are stabilized by hydrogen and ionic intermacromolecular bonds and do not include free copolymer domains. IPC have pH-independent swelling properties in the media mimicking gastrointestinal tract (GIT) conditions and provide colon-specific delivery of indomethacin in buffer solutions (pH 1.2; 5.8; 6.8; 7.4) and in biorelevant media (fasted state simulated gastric fluid, fasted state simulated intestinal fluid—version 2 and fasted stated simulated colonic fluid).

Item Type	Article
URI	https://reading-clone.eprints-hosting.org/id/eprint/91559
Identification Number/DOI	10.3390/polym12071459
Refereed	Yes
Divisions	Life Sciences > School of Chemistry, Food and Pharmacy > School of Pharmacy > Pharmaceutics Research Group
Publisher	MDPI
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