Abstract

This study was carried out to investigate the extraction of cellulose acetate (CA) from cajuput (Melaleuca leucadendron) twigs and sugarcane (Saccharum officinarum) bagasse using an environmentally friendly method. At first, cellulose was extracted from cajuput twigs (CT) and sugarcane bagasse (SB) through prehydrolysis followed by soda (NaOH) pulping and elemental chlorine-free (ECF) bleaching. Later, the extracted cellulose was acetylated using iodine (I) as a catalyst. The obtained CA was characterized by Fourier-transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR), thermal gravimetric analysis (TGA), scanning electron microscope (SEM), and X-ray diffraction. FTIR and NMR analysis proved the replacement of free OH (hydroxyl) groups by acetyl groups. The degree of substitution (DS) showed the acetylation capability of cellulose extracted from CT and SB as well. The diameter of CA and its crystallinity index (CrI) were measured by SEM and X-ray diffraction, respectively. The cellulose content was 85.4 and 89.5% for CT and SB, respectively after the pulping and bleaching. The diameter of CA extracted from CT was approximately 10 mu m and it was approximately 20 to 30 mu m for SB. The CrI of the CA extracted from SB and CT was 75.6 and 60.2, respectively. Furthermore, the thermal gravimetric analysis showed that CA extracted from CT and SB was thermal resistant. Therefore, CT and SB will be potential alternative resources for CA production using the mentioned method.

Keywords

Cellulose acetate; Cajuput twig; Sugarcane bagasse; Prehydrolysis; Acetylation

Published in

Waste and Biomass Valorization
2022, Volume: 13, number: 3, pages: 1535-1545
Publisher: SPRINGER

SLU Authors

• Das, Atanu Kumar

  • Department of Forest Biomaterials and Technology, Swedish University of Agricultural Sciences
    

Sustainable Development Goals

Take urgent action to combat climate change and its impacts
Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation
Ensure sustainable consumption and production patterns


UKÄ Subject classification

Polymer Chemistry


Publication identifier

DOI: https://doi.org/10.1007/s12649-021-01610-y

Permanent link to this page (URI)

https://res.slu.se/id/publ/114039