The use of conducting polymer films for drug release device applications
The use of conducting polymer films for drug release device applications
The aim of this project was to develop electrodes that allow drugs to be uploaded and released from conductive polymer films for biomedical applications. A thorough literature review of conducting polymer synthesis, analysis and doping mechanisms was presented and the applications of conducting polymers in the development of drug delivery systems were reviewed.
Electrochemical deposition of polyppyrrole (PPy) was carried out on different susbstrates,including stainless steel (SS), cellulose acetate membranes, AZ31 Mg alloy and hybrid systems. A series colorant and model drugs, such as rhodhamine 6G (Rh-6G), fluoresce in sodium salt (FSS), methylene blue (MB), dopamine hydrochloride (DB), ibuprofen sodium salt (IP), were incorporated into PPy films grown on different substrates and the kinetics of drug release were investigated. The AZ31 Mg alloy was used to investigate self-powered systems. The results presented about this topic include the liberation of IP and sodium salicylate from PPy films deposited on AZ31 Mg alloy. The presence of drugs uploaded into the system, such as IP and salicylate affect the nucleation and growth processes. SEM micrographs of PPy films show a less compact, cracked, uneven surface with needle-like structures observed for sodium ibuprofen containing solutions (>5 mmol dm-3). Self-powered IP release experiments in 0.9% wt. NaCl are fitted to Avrami's equation and the rate variations being attributed to uneven corrosion of the underlying alloy. Mechanical properties such as hardness and reduced modulus decreased 54% and 40% respectively for PPy films prepared in salicylate solutions compared with those prepared in solutions containing different ibuprofen concentration (0.5 to 10 mmol dm-3),indicating a more plastic film with IP.
Other results presented include the release of fluorescent dyes and drugs deposited in cellulose membranes covered with magnesium PPy or deposited on SS substrate.
University of Southampton
ALShammary, Badr
e32e4e92-e5d5-4135-8655-7e287bf81759
November 2016
ALShammary, Badr
e32e4e92-e5d5-4135-8655-7e287bf81759
Ponce De Leon Albarran, Carlos
508a312e-75ff-4bcb-9151-dacc424d755c
ALShammary, Badr
(2016)
The use of conducting polymer films for drug release device applications.
University of Southampton, Doctoral Thesis, 297pp.
Record type:
Thesis
(Doctoral)
Abstract
The aim of this project was to develop electrodes that allow drugs to be uploaded and released from conductive polymer films for biomedical applications. A thorough literature review of conducting polymer synthesis, analysis and doping mechanisms was presented and the applications of conducting polymers in the development of drug delivery systems were reviewed.
Electrochemical deposition of polyppyrrole (PPy) was carried out on different susbstrates,including stainless steel (SS), cellulose acetate membranes, AZ31 Mg alloy and hybrid systems. A series colorant and model drugs, such as rhodhamine 6G (Rh-6G), fluoresce in sodium salt (FSS), methylene blue (MB), dopamine hydrochloride (DB), ibuprofen sodium salt (IP), were incorporated into PPy films grown on different substrates and the kinetics of drug release were investigated. The AZ31 Mg alloy was used to investigate self-powered systems. The results presented about this topic include the liberation of IP and sodium salicylate from PPy films deposited on AZ31 Mg alloy. The presence of drugs uploaded into the system, such as IP and salicylate affect the nucleation and growth processes. SEM micrographs of PPy films show a less compact, cracked, uneven surface with needle-like structures observed for sodium ibuprofen containing solutions (>5 mmol dm-3). Self-powered IP release experiments in 0.9% wt. NaCl are fitted to Avrami's equation and the rate variations being attributed to uneven corrosion of the underlying alloy. Mechanical properties such as hardness and reduced modulus decreased 54% and 40% respectively for PPy films prepared in salicylate solutions compared with those prepared in solutions containing different ibuprofen concentration (0.5 to 10 mmol dm-3),indicating a more plastic film with IP.
Other results presented include the release of fluorescent dyes and drugs deposited in cellulose membranes covered with magnesium PPy or deposited on SS substrate.
Text
Final Thesis for Award received 25_04_17
- Version of Record
More information
Published date: November 2016
Identifiers
Local EPrints ID: 438579
URI: http://eprints.soton.ac.uk/id/eprint/438579
PURE UUID: c12f078a-3a64-4565-9c38-fe7dbe1f8312
Catalogue record
Date deposited: 17 Mar 2020 17:33
Last modified: 17 Mar 2024 05:25
Export record
Contributors
Author:
Badr ALShammary
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics
