Change search
ReferencesLink to record
Permanent link

Direct link
Rod Packing in Chiral Nematic Cellulose Nanocrystal Dispersions Studied by Small-Angle X-ray Scattering and Laser Diffraction
KTH, School of Chemical Science and Engineering (CHE), Centres, Wallenberg Wood Science Center.
Show others and affiliations
2015 (English)In: Langmuir, ISSN 0743-7463, E-ISSN 1520-5827, Vol. 31, no 23, 6507-6513 p.Article in journal (Refereed) Published
Abstract [en]

The packing of cellulose nanocrystals (CNC) in the anisotropic chiral nematic phase has been investigated over a wide concentration range by small-angle X-ray scattering (SAXS) and laser diffraction. The average separation distance between the CNCs and the average pitch of the chiral nematic phase have been determined over the entire isotropic-anisotropic biphasic region. The average separation distances range from 51 nm, at the onset of the anisotropic phase formation, to 25 nm above 6 vol % (fully liquid crystalline phase) whereas the average pitch varies from approximate to 15 mu m down to approximate to 2 mu m as phi increases from 2.5 up to 6.5 vol %. Using the cholesteric order, we determine that the twist angle between neighboring CNCs increases from about 1 degrees up to 4 degrees as phi increases from 2.5 up to 6.5 vol %. The dependence of the twisting on the volume fraction was related to the increase in the magnitude of the repulsive interactions between the charged rods as the average separation distance decreases.

Place, publisher, year, edition, pages
2015. Vol. 31, no 23, 6507-6513 p.
National Category
Chemical Sciences
URN: urn:nbn:se:kth:diva-171143DOI: 10.1021/acs.langmuir.5b00924ISI: 000356755300027PubMedID: 26020691ScopusID: 2-s2.0-84934954541OAI: diva2:842433

QC 20150720

Available from: 2015-07-20 Created: 2015-07-20 Last updated: 2015-07-20Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textPubMedScopus
By organisation
Wallenberg Wood Science Center
In the same journal
Chemical Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 167 hits
ReferencesLink to record
Permanent link

Direct link