EFFECT OF CELLULOSIC POLYMER ON PHYSICO MECHANICAL PROPERTIES OF SUPERPOROUS HYDROGEL OF AN ANTIHYPERTENSIVE DRUG AND DRUG RELEASE KINETICS FROM IT

Superporous hydrogel

  • Gopa Roy Biswas NSHM Knowledge Campus, Kolkata-Group of Institutions
  • Debolina Roy Division of Pharmaceutics, NSHM College of Pharmaceutical Technology, NSHM Knowledge Campus, Kolkata-Group of Institutions, 124 B.L. Saha Road, Kolkata 700 053, India
  • Sutapa Biswas Majee Division of Pharmaceutics, NSHM College of Pharmaceutical Technology, NSHM Knowledge Campus, Kolkata-Group of Institutions, 124 B.L. Saha Road, Kolkata 700 053, India

Abstract

Superporous hydrogels (SPHs), a novel drug delivery system can be developed to retain drugs in the gastric medium. On water absorption through open porous structure these systems instantly swell in the stomach by capillary force and maintain their integrity in the stomach environment. Atenolol, an antihypertensive, is highly unstable at basic pH. Hence there is a need to develop a gastroretentive system. In this study, super porous hydrogel of Atenolol has been developed in different ratio of two different grades of HPMC along with Carbopol 971p. Adequate strength to resist the forces in the environment was achieved by the addition of Ac- Di- Sol. Sodium Chloride has been used as pore forming agents. Solvent penetration, hydration, swelling and diffusion of the drug are the key features for drug release mechanism from this system.


The structural morphology of hydrogel was observed by Scanning Electron Microscopy. The study revealed the presence of pores in different size ranges like 1 µm, 2 µm, 10 µm etc. Since the SPHs possess lot of pores, the density of them was found to be lower compared to the conventional hydrogels. A correlation has been found between porosity, density and % swelling index. With increase in porosity, density decreases and swelling index was found to be increased. The drug release data from the formulations obeyed Higuchi and Korsmeyer- Peppas kinetics. Next the data were fitted to the Kopcha model for confirming drug release by combination of diffusion-controlled and chain relaxation–swelling mechanism. It was found that the diffusion mechanism predominated the process leading to quasi diffusion and Fickian diffusion mechanism.

Keywords: Super porous hydrogel, Gastro retentive, Porosity, Higuchi, Korsmeyer-Peppas , diffusion, Kopcha Kinetics

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Roy Biswas, G., Roy, D., & Biswas Majee, S. (2019). EFFECT OF CELLULOSIC POLYMER ON PHYSICO MECHANICAL PROPERTIES OF SUPERPOROUS HYDROGEL OF AN ANTIHYPERTENSIVE DRUG AND DRUG RELEASE KINETICS FROM IT. International Journal of Applied Pharmaceutics, 11(5). Retrieved from https://innovareacademics.in/journals/index.php/ijap/article/view/34734
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