Cyclodextrin-grafted cellulose: Physico-chemical characterization
Artikel i vetenskaplig tidskrift, 2013

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.

Cyclodextrin

FTIR

Cellulose

Dissolution

Polycarboxylic acid

Författare

B. Medronho

Universidade do Algarve

Universidade de Coimbra

R. Andrade

Universidade de Coimbra

V. Vivod

Univerza v Mariboru

Åsa Östlund

Chalmers, Kemi- och bioteknik, Teknisk ytkemi

M. G. Miguel

Universidade de Coimbra

B. Lindman

Lunds universitet

Universidade de Coimbra

B. Voncina

Univerza v Mariboru

A. J. M. Valente

Universidade de Coimbra

Carbohydrate Polymers

0144-8617 (ISSN)

Vol. 93 1 324-330

Ämneskategorier

Organisk kemi

DOI

10.1016/j.carbpol.2012.08.109

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Senast uppdaterat

2018-03-29