Fabrication of biodegradable kraft paper from buffing dust and jute fiber: Green solutions for packaging

Addressing solid waste recycling, this study aims to develop biodegradable kraft paper from buffing dust (BD) and post-consumed jute fiber (JF). Employing a simple solution casting method with a polyurethane binder, the kraft paper was fabricated and characterized using UV-Vis spectroscopy, FTIR, XRD, SEM, TGA, OTR, biodegradability, and tensile tests. The findings revealed covalent and hydrogen bonding between BD and JF, forming a uniform surface. Notably, the composite exhibited improved thermal stability, enhanced gas barrier properties, and biodegradability compared to individual components. Furthermore, the composite also showed 57% higher tensile strength, 38% greater elongation, 20% increased hardness, and 9% higher density compared to buffing dust. Compared to jute fiber, the increases were 125%, 91%, 30%, and 19% respectively. Moreover, the composite excelled in gas barrier performance, surpassing BD and JF by a remarkable 61% and 73% increase respectively. These significant findings underscore the vast potential of the composite kraft paper as a versatile material suitable for various applications, including packaging, interior furnishing industries, and reinforcing elements in the footwear industry. By addressing waste management and promoting sustainability, this research contributes to the development of eco-friendly materials that align with contemporary environmental concerns.HighlightsCovalent and hydrogen bonding enhance uniformity.Biodegradable kraft paper with improved properties.Impressive tensile strength, elongation, and hardness.Versatile material for eco-friendly applications.Promotes sustainability and waste management. Mechanism of preparation of biodegradable composite kraft paper.image