PrefaceChapter 1: Functional Materials and Specialised TechnologiesExtraction and Characteristics of Melanin from Black Soldier Fly (BSF) Pupal Skin as Biopolymer Raw MaterialBiodiesel Preparation from Roselle Seeds by Ultrasonic CavitationRemoving Oil from Produced Water Using Electrochemical MethodStudy on Physical Properties of Silicene Nanoribbons Doped AsChapter 2: Polymers and CompositesEffect of Loading Speed on Tensile Property of Single Flax Yarn/Shellac Green Composite MaterialHLEBI (Homogeneous Low Potential Electron Beam Irradiation) Induced Tensile Elongation of 3D Printed Short Carbon Fiber Reinforced Polyamide (3D-SCFRPA66)Fabrication and Characterization of Acetic Acid-Treated Salago Fiber–Epoxy Composite: Enhancing Mechanical and Thermal PropertiesNito “Core” Fiber-Reinforced Epoxy Composites: Enhancing Properties with NaHCO3 TreatmentA Comparative Assessment of Hole Integrity with Twist Drill Geometry in Drilling AFRP/AL7075-T6 Stack MaterialMicrostructure Analysis of the Alloy 625-nTiC Metal-Matrix-Composites Produced by Suction CastingUtilization of Silica from Palm Ash Waste as an Abrasive Material in Brake Friction CompositeThe Regression Models of Ultraviolet Rays Effect on Break Strain and Strain at the Ultimate Tensile Strength of Polypropylene Composite MaterialsOn the Buckling Behavior of DLP 3D Printed PLA with AgNO3 AdditionExploring the Effects of Composition and Thickness Variations on Polyurethane Density in Fishing Vessel Hatches as an Insulation Material: A Comprehensive StudyUnveiling the Potential of Waste Materials: Investigating the Novel Approach of Using Scrap Fabric-Inner Tubes Composites for Sound AbsorptionUtilization of Recycle LDPE (r-LDPE) Plastic and Galangal Stem Fiber for the Development of 3D Printing Filaments