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Cyclodextrin-grafted cellulose [Elektronski vir]
Medronho, Bruno ...
Cyclodextrins (CDs) can form inclusion complexes with a wide variety of molecules making them very attractive in different areas. In this communication we will report on the physico-chemical ...characterization of cellulose modified with CDs by means of infra-red spectroscopy (FTIR), polarized optical microscopy (POM) and thermal gravimetric analysis (TGA). Both 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 reveled that cellulose was less soluble when compared to the unmodified polymer. The formation of a complex CDcellulose network is hypothesized
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