Potential for Natural Fiber Reinforcement in PLA Polymer Filaments for FDM Additive Manufacturing

Abstract

This comprehensive review examines natural fiber reinforcement potential in PLA filaments for FDM 3D printing, with particular focus on kenaf fiber composites. Natural fibers offer advantages over synthetic alternatives including renewable sourcing, high specific strength and modulus, low cost, light weight, and biodegradability. The review covers fiber types (kenaf, jute, hemp, flax), processing methods, surface treatments, and mechanical property enhancements achievable through proper composite formulation.

Questions this source addresses

• How does alkali (NaOH) surface treatment of natural fibers affect the mechanical properties of PLA composite filaments?
• What advantages do natural fibers like kenaf offer over synthetic reinforcements such as carbon or glass fiber in PLA composites?
• What processing and printability challenges arise when incorporating natural fibers into FDM filament, such as moisture content and fiber length?
• Which natural fiber types are being explored for reinforcing PLA filaments, and how do they compare for FDM applications?