Preparation and Characterization of Hemicellulose Films from Sugarcane Bagasse

Abstract

Hemicellulose is one of the most common polysaccharides found in nature. Its use as a green and sustainable raw material for industries is desirable. In this work, an alkaline-alcoholic method was used to extract hemicelluloses from sugarcane bagasse. After extraction, films with 2%, 3% and 4% (w/v) hemicellulose were produced. The films’ morphology, thickness, water solubility, tensile properties and thermal stability were evaluated. The Fourier Transform Infrared Spectroscopy (FTIR) results reveal that the method used removes the hemicellulose from bagasse with a low concentration of lignin. The films presented a compact and dense structure with uniformity in thickness associated with higher solubility in water. The increase in hemicellulose content increased tensile strength, but reduced the tensile strain of the films. Thermogravimetric analysis indicated that the increase in hemicellulose content reduced the films’ thermal stability. Thus, these films may act as useful, biodegradable and environmentally friendly materials for engineering applications.

Extraction of Microfibrillar Cellulose From Waste Paper by NaOH/Urethane Aqueous System and Its Utility in Removal of Lead from Contaminated Water

“…Figure 1c exhibits the secondary electron image of extracted microfibrillated cellulose. Although there are many reports [24][25][26] on morphology of cellulose studied by a variety of techniques, secondary electron images are never reported. This manuscript reports the first-ever secondary electron image of microfibrillated cellulose.…”

Xylan Hemicellulose: A Renewable Material with Potential Properties for Food Packaging Applications

“…The presence of chitosan may reduce water absorption due to its low solubility in water. Due to the high hydrophilic character of xylan hemicellulose, the solubility of xylan films is higher than other polymeric materials used in packaging applications [35]. This can be decreased by the chemical modification of xylan biopolymers or by the addition of other compounds that are more hydrophobic [12,35,36].…”

“…Then, the samples were immersed in 50 mL of distilled water at room temperature and for 1 h. The remaining samples (waste) were filtered by filter paper and dried at 103 • C for 4 h and weighed to obtain the final weight (W dry final ). The solubility capacity of film samples was calculated by Equation (2) [35].…”

Influence of green extraction process of nano fibrillated cellulose using subcritical water/CO2 on its properties and development of its bio composite

“…indicate the partial removal of hemicelluloses, which resulted in corresponding improvement in the thermal stability. [65,66] Thermal stability of both type of SC-NFC and MC-NFCs are of significantly higher than that of SA-CNC (167 C). It can also be confirmed by the DTG curve (Figure 8(B)).…”