Cyclodextrin-grafted cellulose: physico-chemical characterization.
Carbohydr Polym
; 93(1): 324-30, 2013 Mar 01.
Article
en En
| MEDLINE
| ID: mdl-23465937
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.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Celulosa
/
Ciclodextrinas
Idioma:
En
Revista:
Carbohydr Polym
Año:
2013
Tipo del documento:
Article
País de afiliación:
Portugal