Affiliation:
1. Department of Mechanical Engineering National Institute of Technology Karnataka Surathkal India
2. School of Mechanical and Materials Engineering, Indian Institute of Technology Mandi Mandi Himachal Pradesh India
Abstract
AbstractThis study aims to develop a 3D printable composite filament using short banana fiber and polylactic acid (PLA). The filament was acquired through a single screw extruder, employing various blending techniques. Various fiber loadings were examined, impacting PLA's mechanical, thermal, and printability properties. The results revealed altered mechanical characteristics, with reduced tensile and flexural properties compared with pure PLA. However, these values are at an acceptable level for non‐structural applications. Compared with previous works, the filament developed in the present work is found out to be second strongest among the cellulose fiber‐reinforced PLA filaments. 3D printing with the composite filament encountered no significant issues. A modified mixing method improved mechanical characteristics, although 3D‐printed samples showed deteriorated mechanical characteristics due to poor interfacial bonding. This research introduces an environmentally viable strategy for advancing 3D printing technology by integrating banana fibers into PLA filament. The proposed strategy can be effectively utilized in making cellulose/PLA filaments for 3D printing applications. This innovative approach preserves PLA's natural biodegradability while carefully managing the integration of banana fibers and their potential effects on mechanical properties.Highlights
Fiber loading influences mechanical, with minimal impact on thermal properties.
Solution casting improved fiber/matrix bonding and filler homogeneity.
Plasticizing effect reduces the tensile strength.
Modified mixing resulted in even filament diameter and improved tensile properties.
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