Shear-Coated Linear Birefringent and Chiral Cellulose Nanocrystal Films Prepared from Non-Sonicated Suspensions with Different Storage Time
Nanocelluloses are very attractive materials for creating structured films with unique optical properties using different preparation techniques. Evaporation-induced self-assembly of cellulose nanocrystals (CNC) aqueous suspensions produces iridescent films with selective circular Bragg reflection....
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-08-01
|
| Series: | Nanomaterials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-4991/11/9/2239 |
| _version_ | 1797517957618728960 |
|---|---|
| author | Olga Rubi Juárez-Rivera Reina Araceli Mauricio-Sánchez Kenneth Järrendahl Hans Arwin Arturo Mendoza-Galván |
| author_facet | Olga Rubi Juárez-Rivera Reina Araceli Mauricio-Sánchez Kenneth Järrendahl Hans Arwin Arturo Mendoza-Galván |
| author_sort | Olga Rubi Juárez-Rivera |
| collection | DOAJ |
| description | Nanocelluloses are very attractive materials for creating structured films with unique optical properties using different preparation techniques. Evaporation-induced self-assembly of cellulose nanocrystals (CNC) aqueous suspensions produces iridescent films with selective circular Bragg reflection. Blade coating of sonicated CNC suspensions leads to birefringent CNC films. In this work, fabrication of both birefringent and chiral films from non-sonicated CNC suspensions using a shear-coating method is studied. Polarization optical microscopy and steady-state viscosity profiles show that non-sonicated CNC suspensions (concentration of 6.5 wt%) evolve with storage time from a gel-like shear-thinning fluid to a mixture of isotropic and chiral nematic liquid crystalline phases. Shear-coated films prepared from non-sonicated fresh CNC suspensions are birefringent, whereas films prepared from suspensions stored several weeks show reflection of left-handed polarized light. Quantification of linear and circular birefringence as well circular dichroism in the films is achieved by using a Mueller matrix formalism. |
| first_indexed | 2024-03-10T07:22:27Z |
| format | Article |
| id | doaj.art-af74b4c044eb4626863ca4845e560191 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T07:22:27Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-af74b4c044eb4626863ca4845e5601912023-11-22T14:29:25ZengMDPI AGNanomaterials2079-49912021-08-01119223910.3390/nano11092239Shear-Coated Linear Birefringent and Chiral Cellulose Nanocrystal Films Prepared from Non-Sonicated Suspensions with Different Storage TimeOlga Rubi Juárez-Rivera0Reina Araceli Mauricio-Sánchez1Kenneth Järrendahl2Hans Arwin3Arturo Mendoza-Galván4Cinvestav-Unidad Querétaro, Libramiento Norponiente 2000, Querétaro 76230, MexicoCinvestav-Unidad Querétaro, Libramiento Norponiente 2000, Querétaro 76230, MexicoMaterials Optics, Department of Physics, Chemistry and Biology, Linköping University, SE-581 83 Linköping, SwedenMaterials Optics, Department of Physics, Chemistry and Biology, Linköping University, SE-581 83 Linköping, SwedenCinvestav-Unidad Querétaro, Libramiento Norponiente 2000, Querétaro 76230, MexicoNanocelluloses are very attractive materials for creating structured films with unique optical properties using different preparation techniques. Evaporation-induced self-assembly of cellulose nanocrystals (CNC) aqueous suspensions produces iridescent films with selective circular Bragg reflection. Blade coating of sonicated CNC suspensions leads to birefringent CNC films. In this work, fabrication of both birefringent and chiral films from non-sonicated CNC suspensions using a shear-coating method is studied. Polarization optical microscopy and steady-state viscosity profiles show that non-sonicated CNC suspensions (concentration of 6.5 wt%) evolve with storage time from a gel-like shear-thinning fluid to a mixture of isotropic and chiral nematic liquid crystalline phases. Shear-coated films prepared from non-sonicated fresh CNC suspensions are birefringent, whereas films prepared from suspensions stored several weeks show reflection of left-handed polarized light. Quantification of linear and circular birefringence as well circular dichroism in the films is achieved by using a Mueller matrix formalism.https://www.mdpi.com/2079-4991/11/9/2239cellulose nanocrystalsstructural colorlinear birefringencecircular dichroismMueller matrix |
| spellingShingle | Olga Rubi Juárez-Rivera Reina Araceli Mauricio-Sánchez Kenneth Järrendahl Hans Arwin Arturo Mendoza-Galván Shear-Coated Linear Birefringent and Chiral Cellulose Nanocrystal Films Prepared from Non-Sonicated Suspensions with Different Storage Time Nanomaterials cellulose nanocrystals structural color linear birefringence circular dichroism Mueller matrix |
| title | Shear-Coated Linear Birefringent and Chiral Cellulose Nanocrystal Films Prepared from Non-Sonicated Suspensions with Different Storage Time |
| title_full | Shear-Coated Linear Birefringent and Chiral Cellulose Nanocrystal Films Prepared from Non-Sonicated Suspensions with Different Storage Time |
| title_fullStr | Shear-Coated Linear Birefringent and Chiral Cellulose Nanocrystal Films Prepared from Non-Sonicated Suspensions with Different Storage Time |
| title_full_unstemmed | Shear-Coated Linear Birefringent and Chiral Cellulose Nanocrystal Films Prepared from Non-Sonicated Suspensions with Different Storage Time |
| title_short | Shear-Coated Linear Birefringent and Chiral Cellulose Nanocrystal Films Prepared from Non-Sonicated Suspensions with Different Storage Time |
| title_sort | shear coated linear birefringent and chiral cellulose nanocrystal films prepared from non sonicated suspensions with different storage time |
| topic | cellulose nanocrystals structural color linear birefringence circular dichroism Mueller matrix |
| url | https://www.mdpi.com/2079-4991/11/9/2239 |
| work_keys_str_mv | AT olgarubijuarezrivera shearcoatedlinearbirefringentandchiralcellulosenanocrystalfilmspreparedfromnonsonicatedsuspensionswithdifferentstoragetime AT reinaaracelimauriciosanchez shearcoatedlinearbirefringentandchiralcellulosenanocrystalfilmspreparedfromnonsonicatedsuspensionswithdifferentstoragetime AT kennethjarrendahl shearcoatedlinearbirefringentandchiralcellulosenanocrystalfilmspreparedfromnonsonicatedsuspensionswithdifferentstoragetime AT hansarwin shearcoatedlinearbirefringentandchiralcellulosenanocrystalfilmspreparedfromnonsonicatedsuspensionswithdifferentstoragetime AT arturomendozagalvan shearcoatedlinearbirefringentandchiralcellulosenanocrystalfilmspreparedfromnonsonicatedsuspensionswithdifferentstoragetime |