Frontiers of Chemical Science and Engineering >
Biodegradable polymethacrylic acid grafted psyllium for controlled drug delivery systems
Received date: 21 Sep 2012
Accepted date: 15 Nov 2012
Published date: 05 Mar 2013
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Polymethacrylic acid (PMA) was synthesized on the backbone of psyllium (Psy) by a microwave assisted method to prepare polymeric grafted materials designated as (Psy-g-PMA). Various grades of Psy-g-PMA were prepared by changing the degree of grafting from 35%–58% and the materials were then made into tablets. Swelling and biodegradability studies of the tablets were carried out. Acetyl salicylic acid was incorporated in the various Psy-g-PMA samples and tablets were prepared to study the in vitro drug release in acidic (pH= 4), neutral (pH= 7), and basic (pH= 9) media. In the acidic medium, the swelling was more than 1300%. In addition, the biodegradable Psy-g-PMA had the highest drug release in the acidic medium. This may be attributed to Fickian diffusion since the drug and the medium in which it was released have the same acidic nature.
Key words: psyllium; acetyl salicylic acid; in-vitro drug release; swelling; biodegradation
Ranvijay KUMAR , Kaushlendra SHARMA . Biodegradable polymethacrylic acid grafted psyllium for controlled drug delivery systems[J]. Frontiers of Chemical Science and Engineering, 2013 , 7(1) : 116 -122 . DOI: 10.1007/s11705-013-1310-0
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