Characterization of a Novel Fiber Obtained from the Bark of Annona reticulata Tree for Utilization in Composite Applications
By Mufaddal Shakir
8/28/20251 min read
Characterization of a Novel Fiber Obtained from the Bark of Annona reticulata Tree for Utilization in Composite Applications
There is increasing interest in alternative natural fibers for possible biocomposite applications due to the increased demand for environmentally friendly and sustainable materials. Thus, in light of this, a latest research has done the experimental characterization of a novel fiber derived from the bark of the Annona reticulata tree.
About Annona reticulata
Annona reticulata is a tropical fruit tree species belonging to the Annonaceae family. Annona reticulata is native to the West Indies and is best known for its fruit, called custard apple. Believed to be native to the Caribbean and Central America, but now widely cultivated in tropical and subtropical regions.
Extraction of fibers
The branches of the Annona reticulata tree were obtained from the northern region of Bangladesh. The fibers were extracted using a simple water retting process by keeping the bark in clean water for a period of 10-14 days, followed by drying for 7 days, and thus finally getting the desired natural fibers. The extracted fibers were maintained in sealed containers at ambient temperature and were not subjected to any chemical treatment, making sure that the structural integrity of the fibers was preserved.
Extracted fiber from the bark of Annona reticulata tree (Source: Scientific Reports)
Results of fiber characterization
The density of fiber was found to be 1.33 g/cm³, whereas the chemical composition analysis revealed that the fiber contains 56.2% cellulose, 17.5% hemicellulose, and 16.7% lignin, respectively. A crystalline size of 3.34 nm and a crystallinity index of 65% were observed by XRD analysis, showing a moderately ordered cellulose structure. The thermal tests confirmed the thermal stability of the fiber up to 258 ℃ and maximum degradation of the fiber at 373 ℃. The mechanical behavior of the fiber revealed its tensile strength and elastic modulus to be 327 MPa and 4.3 GPa, respectively. These experimental findings indicate a positive future utilization of Annona reticulata fiber as reinforcement in composite materials for sustainable applications.