Cyclodextrin-grafted cellulose: Physico-chemical characterization

Research output: Contribution to journalArticle

Abstract

Cyclodextrins (CDs) can form inclusion complexes with a wide variety of molecules making them very attractive in different areas, such as pharmaceutics, biochemistry, food chemistry and textile. In this communication we will report on the physico-chemical characterization of cellulose modified with CDs by means of infra-red spectroscopy (FTIR), cross polarization magic angle spinning solid state nuclear magnetic resonance (CP-MAS NMR), polarized optical microscopy (POM) and thermal gravimetric analysis (TGA). Both CP-MAS NMR and FTIR indicate that CDs are chemically attached to cellulose backbone through the formation of ester bonds. Furthermore, the CD-grafted cellulose was dissolved in a "superphosphoric" acid solution but, despite the increase of hydrophilicity due to the modification, POM revealed that grafted cellulose was less soluble when compared to the unmodified polymer. The formation of a complex CD-cellulose network is suggested. (C) 2012 Elsevier Ltd. All rights reserved.

Details

Authors
  • B. Medronho
  • R. Andrade
  • V. Vivod
  • A. Ostlund
  • M. G. Miguel
  • Björn Lindman
  • B. Voncina
  • A. J. M. Valente
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Physical Chemistry

Keywords

  • Cellulose, Cyclodextrin, Polycarboxylic acid, Dissolution, FTIR
Original languageEnglish
Pages (from-to)324-330
JournalCarbohydrate Polymers
Volume93
Issue number1
Publication statusPublished - 2013
Publication categoryResearch
Peer-reviewedYes