Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/80893
Title: Cyclodextrin-grafted cellulose: physico-chemical characterization
Authors: Medronho, B 
Andrade, R 
Vivod, V 
Ostlund, A 
Miguel, M G 
Lindman, B 
Voncina, B 
Valente, A J M 
Issue Date: 1-Mar-2013
Volume: 93
Issue: 1
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.
URI: http://hdl.handle.net/10316/80893
ISSN: 1879-1344
DOI: 10.1016/j.carbpol.2012.08.109
Rights: openAccess
Appears in Collections:FCTUC Química - Artigos em Revistas Internacionais

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