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Methyl methacrylate-co-itaconic acid (MMA-co-IA) hydrogels for controlled drug delivery

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Abstract

In the present work methyl methacrylate-co-itaconic acid (MMA-co-IA) hydrogels were synthesized by free radical copolymerization of methyl methacrylate (MMA) and itaconic acid (IA) using ethylene glycol dimethacrylate (EGDMA) and methylene bisacrylamide (MBAAm) as crosslinkers and benzoyl peroxide as initiator. Selected samples were loaded with model drug lactulose. For the lactulose release, the effect of pH, monomeric compositions, degree of crosslinking were investigated. The release of lactulose was studied for 8 h period in USP phosphate buffer solutions of varying pH 1.2, 5.5, 6.5 and 7.0. The drug release data were fitted into various kinetics models like the zero order, first order, Higuchi and Peppas. The release kinetics of lactulose from MMA/IA hydrogels was found to be best described by the Peppas model. Results showed that drug release increased by increasing IA content in the hydrogels but the effect of changing of crosslinking ratio on drug release was not significant. The surface morphology of MMA/IA drug loaded hydrogel was studied by SEM which revealed uniform distribution of the drug in the hydrogels. In conclusion, it can be said that lactulose can be successfully incorporated into crosslinked MMA/IA hydrogels and its release can be modulated by changing the mole fraction of the acid component in the gels.

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Acknowledgements

We thank the Ministry of Health, Government of Pakistan for funding this research project. We also thank the Faculty of Pharmacy B.Z. University for providing laboratory facilities and Director, Centralized Resource Laboratory, Department of Physics University of Peshawar for providing us the facility of SEM is acknowledged.

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Authors and Affiliations

  1. Faculty of Pharmacy, Bahauddin Zakariya University, Multan, Pakistan

    Nazar Mohammad Ranjha & Jahanzeb Mudassir

  2. Faculty of Pharmacy and Alternative Medicine, Islamia University, Bahawalpur, Pakistan

    Naveed Akhtar

Authors
  1. Nazar Mohammad Ranjha
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  2. Jahanzeb Mudassir
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  3. Naveed Akhtar
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Correspondence to Nazar Mohammad Ranjha.

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Ranjha, N.M., Mudassir, J. & Akhtar, N. Methyl methacrylate-co-itaconic acid (MMA-co-IA) hydrogels for controlled drug delivery. J Sol-Gel Sci Technol 47, 23–30 (2008). https://doi.org/10.1007/s10971-008-1750-z

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  • DOI: https://doi.org/10.1007/s10971-008-1750-z

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