Structure–property correlation assessment of LLDPE‐based biocomposites with Azadirachta Indica wood flour

• Published in: Journal of applied polymer science 2024-12, Vol.141 (46), p.n/a
• Main Authors: Yadav, Jitender, Ramkumar, PL, Parwani, Ajit Kumar
• Format: Article
• Language: English
• Subjects: Azadirachta Indica; cellulose and other wood Products; Flour; Impact strength; Mechanical properties; Modulus of elasticity; Modulus of rupture in bending; Particulate composites; Physical properties; Rotational molding; Tensile strength; thermoplastics; wood polymer composites
• ISSN: 0021-8995; 1097-4628
• DOI: 10.1002/app.56237

This research explores the development of new composite material by integrating Azadirachta Indica (AI) with LLDPE to create wood‐plastic composites using the rotational molding process. By examining various proportions of AI wood flour blended with LLDPE, we investigated their impact on mechanical and physical properties. Our tests elucidate a clear correlation between mechanical properties and composite morphologies. Despite identical molding conditions, higher wood particle concentrations reduced mechanical properties compared to lower concentrations. Remarkably, a 12% wood content emerges as optimal, yielding a tensile modulus of 3.69 MPa and a flexural modulus of 468.5 MPa, with an acceptable reduction of 11% density and 13% porosity versus pure LLDPE. Additionally, we observed declines in tensile strength, impact strength, and hardness by up to 23%, 62%, and 11%, respectively, compared to neat LLDPE. Natural fillers enhance aesthetics, making these materials ideal for consumer products like garden equipment and furniture accessories. Wood Polymer Composite