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Cellulose nanocrystals from native and mercerized cotton

Cellulose (London), 2022-02, Vol.29 (3), p.1567-1581 [Peer Reviewed Journal]

The Author(s), under exclusive licence to Springer Nature B.V. 2021 ;The Author(s), under exclusive licence to Springer Nature B.V. 2021. ;Attribution ;ISSN: 0969-0239 ;EISSN: 1572-882X ;DOI: 10.1007/s10570-021-04313-8

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Title:
Cellulose nanocrystals from native and mercerized cotton
Author: Haouache, Somia ; Jimenez-Saelices, Clara ; Cousin, Fabrice ; Falourd, Xavier ; Pontoire, Bruno ; Cahier, Karine ; Jérome, François ; Capron, Isabelle
Subjects: Bioorganic Chemistry ; Cellulose ; Cellulose fibers ; Ceramics ; Charge density ; Chemical Sciences ; Chemistry ; Chemistry and Materials Science ; Chromatography ; Composites ; Cotton ; Crystal structure ; Crystallinity ; Glass ; Material chemistry ; Mercerization ; Nanocrystals ; Nanofibers ; Nanoparticles ; Natural Materials ; Neutron scattering ; NMR ; Nuclear magnetic resonance ; Organic Chemistry ; Original Research ; Physical Chemistry ; Polymer Sciences ; Polymers ; Surface charge ; Sustainable Development
Is Part Of: Cellulose (London), 2022-02, Vol.29 (3), p.1567-1581
Description: Nanocelluloses occur under various crystalline forms that are currently being selectively used for a wide variety of high performance materials. In the present study, two cellulose nanofibers (CF-I) were mercerized by alkaline treatment (CF-II) without degradation, the same molar mass of 560,000 g/mol was measured. Both samples were acid hydrolyzed, leading to cellulose nanocrystals in native (CNC-I) and mercerized (CNC-II) forms. This study focuses on the detailed characterization of these two nanoparticle morphologies (light and neutron scattering, TEM, AFM), surface chemistry (zetametry and surface charge), crystallinity (XRD, 13 C NMR), and average molar mass coupled to chromatographic techniques (SEC–MALLS-RI, A4F-MALLS-RI), revealing variations in the packing of the crystalline domains. The crystal size of CNC-II is reduced by half compared to CNC-I, with molar masses of individual chains of 41,000 g/mol and 22,000 g/mol for CNC-I and CNC-II, respectively, whereas the same surface charge density is measured. This study gives an example of complementary characterization techniques as well as results to help decipher the mechanism involved in mercerization.
Publisher: Dordrecht: Springer Netherlands
Language: English
Identifier: ISSN: 0969-0239
EISSN: 1572-882X
DOI: 10.1007/s10570-021-04313-8
Source: Hyper Article en Ligne (HAL) (Open Access)
ProQuest Central

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Cellulose nanocrystals from native and mercerized cotton

The Author(s), under exclusive licence to Springer Nature B.V. 2021 ;The Author(s), under exclusive licence to Springer Nature B.V. 2021. ;Attribution ;ISSN: 0969-0239 ;EISSN: 1572-882X ;DOI: 10.1007/s10570-021-04313-8

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