Related Experiment Video
Updated: Jan 7, 2026
08:14
Novel Process for 3D Printing Decellularized Matrices
Published on: January 7, 2019
7.5K
Liquid Crystal Display-Based 3D Printing of Polylactic Acid/Microcrystalline Cellulose Composites
Joyce Alves da Silva1, Nayra Reis do Nascimento2, Gilberto Garcia Del Pino3
1Programa de Pós-Graduação em Ciência e Engenharia de Materiais-PPGCEM, Universidade Federal do Amazonas (UFAM), Manaus 69067-005, Amazonas, Brazil.
Polymers
|December 31, 2025
Summary
Adding microcrystalline cellulose (MCC) to polylactic acid (PLA) composites enhances mechanical properties like hardness and tensile strength. Moderate MCC concentrations (around 3%) offer the best improvements for PLA via LCD Additive Manufacturing.
Area of Science:
- Materials Science
- Polymer Science
- Additive Manufacturing
Background:
- Polylactic acid (PLA) is a biodegradable polymer with good mechanical properties.
- Microcrystalline cellulose (MCC) possesses a high modulus of elasticity.
- Enhancing PLA's mechanical performance is crucial for broader applications.
Purpose of the Study:
- To investigate the production of PLA-MCC composites using LCD Additive Manufacturing.
- To evaluate the effect of varying MCC content on PLA's properties.
- To determine the optimal MCC concentration for mechanical enhancement.
Main Methods:
- Composite fabrication using LCD Additive Manufacturing with PLA and MCC (1%, 3%, 5%, 10%).
- Comprehensive characterization including thermal, mechanical, morphological, and structural analyses.
- Scanning electron microscopy (SEM) for fracture surface analysis.
Main Results:
- MCC addition significantly increased hardness, tensile strength, and modulus of elasticity.
- SEM revealed more heterogeneous fracture surfaces in PLA-MCC composites.
- Thermal stability varied with MCC content; water absorption increased with higher MCC concentrations.
Conclusions:
- Microcrystalline cellulose effectively improves the mechanical properties of polylactic acid.
- Moderate MCC concentrations (e.g., 3%) are optimal for enhancing PLA's performance.
- PLA-MCC composites show promise for applications requiring improved mechanical strength, with considerations for humid environments.
