| dc.contributor |
Materials Science and Engineering |
|
| dc.creator |
Moore, John P. II |
|
| dc.creator |
Dachavaram, Soma Shekar |
|
| dc.creator |
Bommagani, Shobanbabu |
|
| dc.creator |
Penthala, Narsimha Reddy |
|
| dc.creator |
Venkatraman, Priya |
|
| dc.creator |
Foster, Earl Johan |
|
| dc.creator |
Crooks, Peter A. |
|
| dc.creator |
Hestekin, Jamie A. |
|
| dc.date |
2020-04-28T18:58:52Z |
|
| dc.date |
2020-04-28T18:58:52Z |
|
| dc.date |
2020-04-17 |
|
| dc.date |
2020-04-28T14:13:56Z |
|
| dc.date.accessioned |
2023-03-01T18:52:33Z |
|
| dc.date.available |
2023-03-01T18:52:33Z |
|
| dc.identifier |
Moore II, J.P.; Dachavaram, S.S.; Bommagani, S.; Penthala, N.R.; Venkatraman, P.; Foster, E.J.; Crooks, P.A.; Hestekin, J.A. Oxone®-Mediated TEMPO-Oxidized Cellulose Nanomaterials form I and form II. Molecules 2020, 25, 1847. |
|
| dc.identifier |
http://hdl.handle.net/10919/97926 |
|
| dc.identifier |
https://doi.org/10.3390/molecules25081847 |
|
| dc.identifier.uri |
http://localhost:8080/xmlui/handle/CUHPOERS/281631 |
|
| dc.description |
The 2,2,6,6-tetramethylpiperidin-1-oxyl (TEMPO) oxidation of cellulose, when mediated with Oxone<sup>®</sup> (KHSO<sub>5</sub>), can be performed simply and under mild conditions. Furthermore, the products of the reaction can be isolated into two major components: Oxone<sup>®</sup>-mediated TEMPO-oxidized cellulose nanomaterials Form I and Form II (OTO-CNM Form I and Form II). This study focuses on the characterization of the properties of OTO-CNMs. Nanoparticle-sized cellulose fibers of 5 and 16 nm, respectively, were confirmed through electron microscopy. Infrared spectroscopy showed that the most carboxylation presented in Form II. Conductometric titration showed a two-fold increase in carboxylation from Form I (800 mmol/kg) to Form II (1600 mmol/kg). OTO-CNMs showed cellulose crystallinity in the range of 64–68% and crystallite sizes of 1.4–3.3 nm, as shown through XRD. OTO-CNMs show controlled variability in hydrophilicity with contact angles ranging from 16 to 32°, within or below the 26–47° reported in the literature for TEMPO-oxidized CNMs. Newly discovered OTO-CNM Form II shows enhanced hydrophilic properties as well as unique crystallinity and chemical functionalization in the field of bio-sourced material and nanocomposites. |
|
| dc.description |
Published version |
|
| dc.format |
application/pdf |
|
| dc.format |
application/pdf |
|
| dc.language |
en |
|
| dc.publisher |
MDPI |
|
| dc.rights |
Creative Commons Attribution 4.0 International |
|
| dc.rights |
http://creativecommons.org/licenses/by/4.0/ |
|
| dc.subject |
cellulose |
|
| dc.subject |
nanomaterials |
|
| dc.subject |
TEMPO |
|
| dc.subject |
oxone® |
|
| dc.subject |
hydrophilicity |
|
| dc.subject |
crystallinity |
|
| dc.title |
Oxone®-Mediated TEMPO-Oxidized Cellulose Nanomaterials form I and form II |
|
| dc.title |
Molecules |
|
| dc.type |
Article - Refereed |
|
| dc.type |
Text |
|
| dc.type |
StillImage |
|