Designing chitosan-tripolyphosphate microparticles with desired size for specific pharmaceutical or forensic applications

Ezzeddin M A Hejjaji, Alan M. Smith, Gordon A. Morris

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Chitosan (CS) is a natural cationic polymer obtained by the partial N-deacetylation of chitin. Chitosan microparticles can be prepared by cross-linking with tripolyphosphate (TPP) via the ionic interaction between positively charged amino groups (CS) and negatively charged counter ions (TPP). This can be controlled by the charge density of CS and TPP, which depend on the pH and ionic strength of the solution. The purpose of this study is to investigate the combined effects of three independent variables (pH, ionic strength and CS:TPP ratio) on three important physico-chemical properties (viscosity, zeta potential and particle size) during the preparation of microparticles. CS:TPP microparticles were prepared using experimental design and equations were generated and used to predict relative viscosity, zeta potential and particle size under different conditions. This gives us the ability to design tuneable CS-TPP microparticles with desired size for specific pharmaceutical or forensic applications e.g. latent fingerprint visualisation.

Original languageEnglish
Pages (from-to)564-573
Number of pages10
JournalInternational Journal of Biological Macromolecules
Volume95
DOIs
Publication statusPublished - 1 Feb 2017

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