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Cyclodextrin-grafted cellulose: Physico-chemical characterization

B. Medronho ; R. Andrade ; V. Vivod ; Åsa Östlund (Institutionen för kemi- och bioteknik, Teknisk ytkemi) ; M. G. Miguel ; B. Lindman ; B. Voncina ; A. J. M. Valente
Carbohydrate Polymers (0144-8617). Vol. 93 (2013), 1, p. 324-330.
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: Cellulose, Cyclodextrin, Polycarboxylic acid, Dissolution, FTIR



Denna post skapades 2013-04-22. Senast ändrad 2013-04-22.
CPL Pubid: 175878

 

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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Teknisk ytkemi (2005-2014)

Ämnesområden

Organisk kemi

Chalmers infrastruktur