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Exploring Cellulose Triacetate Nanofibers as Sustainable Structuring Agent for Castor Oil: Formulation Design and

M A Martín-Alfonso¹, José F Rubio-Valle¹, Gethzemani M Estrada-Villegas²

¹Chemical Product and Process Technology Research Center (Pro2TecS), Department of Chemical Engineering and Materials Science, University of Huelva, 21071 Huelva, Spain.

Gels (Basel, Switzerland)

|April 26, 2024

Summary

Cellulose triacetate (CTA) nanofibers were electrospun and found to be effective thickening agents for castor oil. These eco-friendly nanofibers offer superior oil structuring capacity compared to conventional thickeners.

Keywords:

castor oil electrospinning green products oil structuring rheology triacetate cellulose

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Published on: January 9, 2017

Area of Science:

Materials Science
Polymer Science
Rheology

Background:

Developing eco-friendly gelled dispersions in oil media is crucial for various applications.
Cellulose triacetate (CTA) is a versatile biopolymer with potential for novel material development.

Purpose of the Study:

To investigate the electrospinning of CTA nanofibers.
To explore the application of CTA nanofibers as thickening agents for castor oil.
To understand the influence of process parameters on nanofiber properties and dispersion rheology.

Main Methods:

Systematic study of CTA solutions in methylene chloride (DCM)/ethanol (EtOH), analyzing shear viscosity, surface tension, and electrical conductivity.
Electrospinning of CTA nanofibers.
Investigation of rheological properties of CTA/castor oil dispersions at varying CTA concentrations and solvent ratios.
Analysis of nanofiber morphology and texture.

Main Results:

Defect-free CTA nanofibers were produced at critical concentrations (above 5 wt.%) exhibiting non-Newtonian behavior.
Nanofiber diameter increased with CTA concentration, and solvent ratios influenced morphology and texture.
CTA nanofibers demonstrated significantly higher oil structuring capacity than synthetic polymers and metal soaps.
Rheological properties of dispersions were tunable via nanofiber concentration and surface characteristics.

Conclusions:

Electrospun CTA nanofibers are effective nanoscale building blocks for creating gel-like oil dispersions.
CTA nanofibers offer a sustainable and high-performance alternative to traditional oil thickeners.
This study highlights the potential for hierarchical control of rheological properties using nanofabrication techniques.