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Ion Exchange

Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or basic...
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Hydrogen-bonded interpolymer complexes as materials for pharmaceutical applications.

Vitaliy V Khutoryanskiy1

  • 1University of Reading, School of Pharmacy, Whiteknights, PO Box 224, Reading RG6 6AD, UK. v.khutoryanskiy@reading.ac.uk

International Journal of Pharmaceutics
|February 27, 2007
PubMed
Summary

Hydrogen-bonded interpolymer complexes formed from poly(carboxylic acids) and non-ionic polymers offer novel pharmaceutical applications. These advanced materials show potential in drug delivery systems, including mucoadhesion and enhanced solubility.

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Area of Science:

  • Polymer Science
  • Materials Science
  • Pharmaceutical Sciences

Background:

  • Polymeric materials are formed through the association of poly(carboxylic acids) and non-ionic polymers in solutions.
  • Hydrogen bonding is the primary mechanism driving the formation of these novel interpolymer complexes.
  • These complexes represent a versatile class of materials with significant potential in various pharmaceutical applications.

Purpose of the Study:

  • To review and analyze the existing literature on the pharmaceutical applications of hydrogen-bonded interpolymer complexes.
  • To systematize the current knowledge regarding the use of these complexes in drug delivery and materials science.
  • To highlight the potential of interpolymer complexes in developing advanced pharmaceutical formulations.

Main Methods:

  • Systematic literature review and analysis.
  • Identification and categorization of pharmaceutical applications based on published research.
  • Synthesis of information on the properties and formation of interpolymer complexes.

Main Results:

  • Interpolymer complexes exhibit diverse pharmaceutical applications, including mucoadhesive dosage forms, solid drug dispersions, and solubilization of poorly soluble drugs.
  • These materials are suitable for advanced drug delivery technologies such as encapsulation, nanoparticle preparation, hydrogels, in situ gelling systems, and electrically erodible materials.
  • The formation of these complexes is driven by specific interactions, primarily hydrogen bonding, between the constituent polymers.

Conclusions:

  • Hydrogen-bonded interpolymer complexes are promising materials for innovative pharmaceutical formulations.
  • Their unique properties enable the development of sophisticated drug delivery systems with improved therapeutic efficacy.
  • Further research into these complexes can unlock new possibilities in drug development and materials science.