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›› 2015, Vol. 32 ›› Issue (1): 51-56.DOI: 10.7523/j.issn.2095-6134.2015.01.009

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Preparation and drug loading performance of glycol chitosan crosslinked-carboxymethyl-beta-cyclodextrin polymers

QIN Fei, YAO Xin   

  1. School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2014-03-07 Revised:2014-03-25 Online:2015-01-15

Abstract:

Carboxymethyl-β-cyclodextrin (CMβ-CD) modified glycol chitosan (GCS) polymers (GCSn-CMβ-CD) were synthesized in the presence of CMβ-CD and GCS. The degree of substitution of CMβ-CD was controllable. The products were characterized by MALDI-TOF MS, 1H nuclear magnetic resonance spectrum (1H-NMR), Fourier transform infrared spectrum (FT-IR), and H2SO4-pheno degradation method. 5-fluorouracil was used as a model drug to explore the interaction with GCSn-CMβ-CD. The results indicate that different GCSn-CMβ-CD polymers showed different drug loading capacities and the adsorption equilibrium was fitted to Langmuir equation. This study provides the basis for usage of GCSn-CMβ-CD as drug carrier.

Key words: glycol chitosan crosslinked-carboxymethyl-beta-cyclodextrin, drug carrier, 5-fluorouracil, surface plasmon resonan

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