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Current Applied Polymer Science

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ISSN (Print): 2452-2716
ISSN (Online): 2452-2724

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Research Article

Electrically Triggered Transdermal Drug Delivery Utilizing Poly(Acrylamide)-graft-Guar Gum: Synthesis, Characterization and Formulation Development

Author(s): Ravindra P. Birajdar, Sudha S. Patil, Vijaykumar V. Alange and Raghavendra V. Kulkarni*

Volume 3, Issue 1, 2019

Page: [64 - 74] Pages: 11

DOI: 10.2174/2452271602666181031093243

Price: $65

Abstract

Objective: The study aimed to prepare electrically-triggered transdermal drug delivery systems (ETDS) using electrically responsive polyacrylamide-graft-gaur gum (PAAm-g-GaG) copolymer.

Methods: The PAAm-g-GaG copolymer was synthesized by adopting free radical polymerization grafting method. This PAAm-g-GaG copolymer hydrogel acts as a drug reservoir and blend films of Guar Gum (GaG) and Polyvinyl Alcohol (PVA) were included as Rate Controlling Membranes (RCM) in the system. The PAAm-g-GaG copolymer was characterized by FTIR, neutralization equivalent values, thermogravimetric analysis and elemental analysis.

Results: On the basis of results obtained, it is implicit that the drug permeation decreased with an increase in the concentration of glutaraldehyde and RCM thickness; while drug permeation rate was increased with increasing applied electric current strength from 2 to 8 mA. A two fold increase in flux values was observed with the application of DC electric current. An increase in drug permeation was witnessed under “on” condition of electric stimulus and permeation was decreased when electric stimulus was “off”. The skin histopathology study confirmed the changes in skin structure when electrical stimulus was applied.

Conclusion: The electrically-sensitive PAAm-g-GaG copolymer is a useful biomaterial for transdermal drug delivery application.

Keywords: Drug permeation, electrically-triggered, graft copolymer, guar gum, hydrogel, transdermal delivery systems.

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