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Cellulose–solvent interactions from self-diffusion NMR

Cellulose (London), 2016-08, Vol.23 (4), p.2753-2758 [Peer Reviewed Journal]

Springer Science+Business Media Dordrecht 2016 ;Cellulose is a copyright of Springer, (2016). All Rights Reserved. ;ISSN: 0969-0239 ;EISSN: 1572-882X ;DOI: 10.1007/s10570-016-0984-0

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Title:
Cellulose–solvent interactions from self-diffusion NMR
Author: Gentile, Luigi ; Olsson, Ulf
Subjects: Bioorganic Chemistry ; Cellulose ; Ceramics ; Chemical Sciences ; Chemistry ; Chemistry and Materials Science ; Composites ; Crystalline cellulose ; Dependence ; Glass ; Kemi ; Molecular interactions ; Natural Materials ; Natural Sciences ; Naturvetenskap ; NMR ; Nuclear magnetic resonance ; Organic Chemistry ; Physical Chemistry ; Polymer Sciences ; Polymer–solvent interaction ; Self diffusion ; Sustainable Development ; Tetrabutylammonium hydroxide
Is Part Of: Cellulose (London), 2016-08, Vol.23 (4), p.2753-2758
Description: Molecular self-diffusion coefficients were measured in solutions of microcrystalline cellulose (MCC) and dissolving pulp, in 40 wt% aqueous tetrabutylammonium hydroxide (TBAH), using pulsed field gradient stimulated echo NMR. From the cellulose diffusion coefficients, a weight averaged radius of hydration w = 6.1 nm for MCC and w = 15 nm for pulp were obtained. Water and TBA + ions show a significantly different dependence on the cellulose concentration, revealing different molecular interactions with the polymer. Water-cellulose are essentially excluded volume. TBA + ions, on the other hand, bind to cellulose with approximately 1.2 TBA + ions per glucose unit.
Publisher: Dordrecht: Springer Netherlands
Language: English
Identifier: ISSN: 0969-0239
EISSN: 1572-882X
DOI: 10.1007/s10570-016-0984-0
Source: ProQuest Central

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Cellulose–solvent interactions from self-diffusion NMR

Springer Science+Business Media Dordrecht 2016 ;Cellulose is a copyright of Springer, (2016). All Rights Reserved. ;ISSN: 0969-0239 ;EISSN: 1572-882X ;DOI: 10.1007/s10570-016-0984-0

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