Oil Encapsulation in Core–Shell Filaments from Cellulose Nanocrystals and Methylcellulose via Dry-Jet Wet Spinning
4 affiliations
- 1Universidade Estadual de Campinas (UNICAMP) , , P.O. Box 6154 , , ,
- 2University of British Columbia , , 2424 Main Mall , , ,
- 3University of British Columbia , , 2360 East Mall , , ,
- 4UBC Bioproducts Institute , 2385 East Mall , ,
Abstract
The incorporation of oils into structured and water-compatible materials remains a key challenge for cellulose-based materials. Here, we demonstrate the production of core–shell filaments from cellulose nanocrystals (CNCs) and methylcellulose (MC) via a dry-jet wet spinning process, enabling the encapsulation of either plant-based oils or CNC-stabilized Pickering emulsions. The use of a physically entangled MC–CNC hydrogel as the shell allows continuous filament formation from an aqueous formulation without chemical cross-linking. By varying the core composition, distinct structural regimes were obtained: oils alone led to bead-on-string morphologies, while emulsions yielded beadless filaments, consistent with the replacement of a continuous oil core by prestabilized micron-sized oil droplets. Estimated oil contents up to 47 wt % were achieved for corn oil alone and 24 wt % for corn oil emulsions. Turmeric and tea tree oils could also be encapsulated within the MC–CNC shell, although the retained oil content varied with oil type. The modular coaxial spinning setup developed here provides a versatile platform for the fabrication of biobased filaments containing oil. These findings establish a simple strategy to integrate hydrophobic components into continuous cellulose-based materials for future exploration in applications requiring oil-containing structured materials.
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BibTeX
@article{scopel2026encapsulation,
title = {{Oil Encapsulation in Core–Shell Filaments from Cellulose Nanocrystals and Methylcellulose via Dry-Jet Wet Spinning}},
author = {Eupidio Scopel and Marc Massicotte and Camila A. Rezende and Emily D. Cranston},
journal = {ACS Omega},
year = {2026},
month = oct,
doi = {10.1021/acsomega.6c06865},
url = {https://pubs.acs.org/acsodf/article/11/42/65045/5448927/Oil-Encapsulation-in-Core-Shell-Filaments-from},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Oil Encapsulation in Core–Shell Filaments from Cellulose Nanocrystals and Methylcellulose via Dry-Jet Wet Spinning
AU - Eupidio Scopel
AU - Marc Massicotte
AU - Camila A. Rezende
AU - Emily D. Cranston
PY - 2026
DA - 2026/10/12
JO - ACS Omega
DO - 10.1021/acsomega.6c06865
UR - https://pubs.acs.org/acsodf/article/11/42/65045/5448927/Oil-Encapsulation-in-Core-Shell-Filaments-from
AB - The incorporation of oils into structured and water-compatible materials remains a key challenge for cellulose-based materials. Here, we demonstrate the production of core–shell filaments from cellulose nanocrystals (CNCs) and methylcellulose (MC) via a dry-jet wet spinning process, enabling the encapsulation of either plant-based oils or CNC-stabilized Pickering emulsions. The use of a physically entangled MC–CNC hydrogel as the shell allows continuous filament formation from an aqueous formulation without chemical cross-linking. By varying the core composition, distinct structural regimes were obtained: oils alone led to bead-on-string morphologies, while emulsions yielded beadless filaments, consistent with the replacement of a continuous oil core by prestabilized micron-sized oil droplets. Estimated oil contents up to 47 wt % were achieved for corn oil alone and 24 wt % for corn oil emulsions. Turmeric and tea tree oils could also be encapsulated within the MC–CNC shell, although the retained oil content varied with oil type. The modular coaxial spinning setup developed here provides a versatile platform for the fabrication of biobased filaments containing oil. These findings establish a simple strategy to integrate hydrophobic components into continuous cellulose-based materials for future exploration in applications requiring oil-containing structured materials.
SN - 2470-1343
ER -