Chitosan and Quat-188 Modified Chitosan Poly(acrylic acid) Semi-Interpenetrating Network For Controlled Release of Drugs

Authors

  • Christian Gonzales Department of Chemistry, School of Science and Engineering, Ateneo de Manila University, Loyola Heights, Quezon City
  • Mari Kaira O. Leal Department of Chemistry, School of Science and Engineering, Ateneo de Manila University, Loyola Heights, Quezon City
  • Ivy Marie C. Andalis Department of Chemistry, School of Science and Engineering, Ateneo de Manila University, Loyola Heights, Quezon City
  • Modesto T. Chua Department of Chemistry, School of Science and Engineering, Ateneo de Manila University, Loyola Heights, Quezon City
  • Takahiko Nakaoki Department of Materials Chemistry, Ryukoku University, Seta, Otsu
  • Soma Chakraborty Department of Chemistry, School of Science and Engineering, Ateneo de Manila University, Loyola Heights, Quezon City

DOI:

https://doi.org/10.26534/kimika.v26i1.1-9

Keywords:

chitosan, controlled drug delivery, hydrogel, Quat-188, poly(acrylic acid)

Abstract

Semi-interpenetrating polymer networks (semi-IPNs) composed of polyacrylic acid (PAA), and chitosan or N-(3-chloro-2-hydroxypropyl)trimethylammonium chloride (Quat-188) modified chitosan were synthesized. To fabricate the semi-IPN, acrylic acid (AA) was polymerized and crosslinked in the presence of unmodified and Quat-188 modified chitosan. The wet strength of the semi-IPNs improved with the increase in molecular weight of chitosan, chitosan to PAA ratio and by Quat-188 modification. Both modified and unmodified semi-IPNs swelled in buffer solutions. Swelling was pH dependent. The mode of encapsulation and release of two different types of drugs from these semi IPNs was studied. Effects of various parameters on encapsulation and release of AgNO3 and mafenide acetate from these semi-IPNs were investigated. The semi-IPN hydrogel encapsulated 10 mmol/L AgNO3 (100% of added drug) in 5min and released 4% of it in 2h. In case of mafenide acetate, pH dependent encapsulation and controlled release was observed. It was observed that drug-semi IPN interaction strongly influences the encapsulation and release behavior. Freezable water associated with the hydrogels also played an important role for the encapsulation and release of drug.

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Published

2015-04-21

How to Cite

Gonzales, C., Leal, M. K. O., Andalis, I. M. C., Chua, M. T., Nakaoki, T., & Chakraborty, S. (2015). Chitosan and Quat-188 Modified Chitosan Poly(acrylic acid) Semi-Interpenetrating Network For Controlled Release of Drugs. KIMIKA, 26(1), 1–9. https://doi.org/10.26534/kimika.v26i1.1-9

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Section

Research Articles