Obtention of Cellulose Acetate Nanofibers From Sugar Cane Bagasse

Abstract

Cellulose is one of the oldest natural polymers; it is renewable, biodegradable, and can be derivatized to manufacture useful products. The electrospinning, a technique for the manufacture of nanofibers, has garnered attention in recent years due to its versatility and potential for applications in various fields such as biomedicine, tissue engineering and also filtration. In this study, cellulose acetate fibers have been obtained by electrospinning. To achieve these results, the cellulose was initially obtained from the sugarcane bagasse of local plantations in Moniquira, Boyaca, then cellulose was modified to obtain cellulose acetate, which has enhanced properties for electrospinning. Yarn parameters were determined, such as needle-manifold distance, flow rate, voltage and polymer concentration, among others. Instrumental analyses were carried out including Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), Differential Scanning Calorimetry (DSC), and Thermogravimetric Analysis (TGA). As a result, cellulose acetate fibers were obtained with an average diameter of 258 nm, with excellent properties such as temperature resistance. This was done in order to continue the work on nanofiber functionalization, as for example, cationization of cellulose and further addition of reactive dyes.

Encapsulation of Diiodo‐BODIPY in Sodium Dodecyl Sulfate Stabilized Cellulose Acetate Capsules for Enhanced Singlet Oxygen Production in Aqueous Solution

“…In Figure 5 A, the second‐stage mass loss was detected at 303–407 °C with 79.23 wt % due to the degradation of CA capsules. The average temperature for the thermal decomposition of CA capsules was observed similarly in the literature [36,37] . Figure 5 B–D shows the TGA curves for Bod6‐loaded CA capsules.…”

“…The average temperature for the thermal decomposition of CA capsules was observed similarly in the literature. [36,37] Figure 5 B-D shows the TGA curves for Bod6-loaded CA capsules. In these curves, the decomposition of Bod6 was seen at 223-262 °C with variable wt % depending on the capsule size.…”

Morphology, mechanical, and physical properties of wet‐spun cellulose acetate fiber in different solvent‐coagulant systems and in‐situ crosslinked environment

“…This transition also coincided with the glass transition of CA. The glass transition of CA occurs over a broad range depending on the degree of substitution of CA polymer 60,61 . The glass transition temperature is shown in Table 6.…”