A novel pH‐sensitive ceramic‐hydrogel for biomedical applications1. (14th July 2015)

• Record Type: Journal Article
• Authors: de Lima, Gabriel Goetten; Campos, Lucas; Junqueira, Amanda; Devine, Declan M.; Nugent, Michael J. D.
• Is Part Of: Polymers for advanced technologies. Volume 26:Number 12(2015:Dec.)
• Page Start: 1439
• Page End: 1446
• Publication Date: 2015-07-14
• Subjects: hydrogel composite -- Poly(vinyl alcohol) -- nano hydroxyapatite -- pH sensitive hydrogel; Polymers -- Periodicals; 668.9
• DOI: 10.1002/pat.3593
• Languages: English
• ISSNs: 1042-7147

Abstract

Abstract : Innovations on the field of smart hydrogels are now being held with loads of advantages. With recent progress, smart polymers can now be used on the market for specific target/objectives desired on medicine. However, the field of smart hydrogels has not been fully overviewed on the ground for drug delivery. In this study, a novel pH‐sensitive smart hydrogel for drug delivery was investigated. Polyvinyl‐alcohol (PVA) with polyacrylic acid (PAA) was blended adding synthetic hydroxyapatite (Hap) with freeze‐thawed cycles and its effects were studied in terms of mechanical strength, bioactivity, and drug release profile. Mechanical strength towards compression tests was decreased after addition of Hap and storage modulus (G') increased. Bioactivity was confirmed after 14 days on simulated body fluid (SBF). Improvement of swelling and gel fraction with the addition of Hap throughout the polymer matrix. Moreover, a study was performed with theophylline‐loaded samples for drug‐delivery studies. Copyright © 2015 John Wiley & Sons, Ltd.