## 3 Results and Discussion  
A biocomposite's morphology is crucial for specific applications, like biopackaging, biomedicine, and electronics, where the effective surface area plays a crucial role. An FE-SEM image of starch and the biocomposite BC1 as a representative (as BC2 and BC3 also exhibit the same morphology) is shown in Figure 1. When the starch shows stacked laminae, BC1 shows fragmented, agglomerated structures. The crystalline characteristics and amorphous structures of the cellulose-based materials are understood from the sharp and broad XRD peaks. Starch displays various polymorphs that are distinguished by unique crystalline structures. The primary polymorphs include A-type, B-type, and C-typearches, each characterised by a distinct arrangement of starch molecules within its crystalline lattice [21; 22]. Starch with a C-type crystalline structure, derived from legumes or plant roots like pea seeds or cassava roots, features a unique composition formed by the coexistence of A- and B-type crystallites [21; 22]. Specifically, C-type starch has a B-type structured core surrounded by A-type crystallites. The base polymer's (TS) XRD pattern shown in Figure 2a exhibits peaks at 15\({}^{\circ}\), 17.97\({}^{\circ}\), 19.93\({}^{\circ}\), 22.78\({}^{\circ}\), 28.7\({}^{\circ}\), 30.69\({}^{\circ}\), and 40.21\({}^{\circ}\) that correspond to the C-type crystallite structure of TS. The XRD pattern of the representative biocomposite, BC1, shown in Figure 2b, also exhibits peaks at 17.83\({}^{\circ}\) (\(-\)102), 19.6\({}^{\circ}\) (021), 20.4\({}^{\circ}\) (002), 21.6\({}^{\circ}\) (012), 28\({}^{\circ}\) (210), and 32.03\({}^{\circ}\) (013), which are assigned to the cellulosic peaks in comparison with the ICDD data (00-003-0226) indicating the C-type crystalline structure in TS. The thermal stability of biocompposite materials is a critical factor that can positively impact their performance, durability, and suitability for diverse applications, spanning from construction and automotive applications to electronics and beyond. The literature [23; 24] indicates that starch undergoes a small initial weight loss up to 100 \({}^{\circ}\)C as a result of moisture removal. Subsequently, between 100 and 200 \({}^{\circ}\)C, the weight loss occurs as a result of the elimination of absorbed water resulting from gelatinisation. The highest decomposition occurs around 200-400 \({}^{\circ}\)C, and it is attributed to the breaking of glycosidic bonds in the starch. The TG and DTG analysis plots of the biocompposite BC1 are displayed in Figure 3a and b, respectively. The TGA curve exhibits three stages of thermal decomposition that occurred in the sample: up to 250 \({}^{\circ}\)C; between 250 \({}^{\circ}\)C and 340 \({}^{\circ}\)C; and from 340 \({}^{\circ}\)C to 800 \({}^{\circ}\)C. A weight reduction of 11.40% in the initial stage, up to 250 \({}^{\circ}\)C, can be attributed to the evaporation of water adsorbed on the surface of the composite and the removal of amorphous carbon. Between 250 \({}^{\circ}\)C and 340 \({}^{\circ}\)C, the composite experienced its most significant weight loss, amounting to 51.96%. This points to the peak decomposition of the composite, likely due to the oxidation of the partially decomposed starch and the fibre degradation. After 340 \({}^{\circ}\)C, the TGA curve shows a plateau region, as the remaining residue was typically composed of inorganic ash. The ash content represents the incomplete combustion of the organic components of the starch [24]. From the DTG analysis (Figure 3b), 300 \({}^{\circ}\)C can be considered as the safe limit for using the prepared biocompposite, where the TGA curve shows only a 40% weight loss. Figure 1: FESEM of (**a**) TS (**b**) BC1. Figure 2: XRD patterns of (**a**) TS and (**b**) BC1. DSC is a thermal analysis method employed for examining the heat flow linked to the physical and chemical transitions within a sample observed in relation to temperature variations.