Polylactic acid (PLA) has been used in fused deposition method (FDM) based 3D printing for many years. Alkali lignin is an undervalued industrial by-product that could upgrade PLA's poor mechanical properties. This work presents a biotechnological approach consisting of a partial degradation of alkali lignin using Bacillus ligniniphilus laccase (Lacc) L1 for its use as a nucleating agent in a polylactic acid/thermoplastic polyurethane (PLA/TPU) blend. Results showed that adding enzymatically modified lignin (EL) increased the elasticity modulus to a maximum of 2.5-fold than the control and conferred a maximum biodegradability rate of 15 % after 6 months under the soil burial method. Furthermore, the printing quality rendered satisfactory smooth surfaces, geometries and a tunable addition of a woody color. These findings open a new door for using laccase as a tool to upgrade lignin's properties and its use as a scaffold in manufacturing more environmentally sustainable filaments with improved mechanical properties for 3D printing.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.ijbiomac.2023.123881 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Optimizing Mechanical Properties of Recycled 3D-Printed PLA Parts for Sustainable Packaging Solutions Using Experimental Analysis and Machine Learning.
Polymers (Basel)
November 2024
Chemistry Department, Petroleum-Gas University of Ploiești, 100680 Ploiesti, Romania.
Increasing environmental concerns and the need for sustainable materials have driven a focus towards the utilization of recycled polylactic acid (PLA) in additive manufacturing as PLA offers advantages over other thermoplastics, including biodegradability, ease of processing, and a lower environmental impact during production. This study explores the optimization of the mechanical properties of recycled PLA parts through a combination of experimental and machine learning approaches. A series of experiments were conducted to investigate the impact of various processing parameters, such as layer thickness and infill density, as well as annealing conditions, on the mechanical properties of recycled PLA parts.
View Article and Find Full Text PDFSingle-Particle ICP-TOFMS Analysis of Aerosol Particulate Matter Released by Fused Deposition Modeling 3D Printers.
Anal Chem
December 2024
Department of Chemistry, Iowa State University, Ames, Iowa 50011-2140, United States.
Additive manufacturing or 3D printing is rapidly growing in popularity. This growth brings increased interest in studying the byproducts released during 3D printing. In this work, we present a new method to collect and analyze the metal composition of individual particles released during the operation of fused deposition modeling (FDM) 3D printers using single-particle inductively coupled plasma time-of-flight mass spectrometry (spICP-TOFMS).
View Article and Find Full Text PDFDevelopment of Innovative Thermoplastic Foam Materials Using Two Additive Manufacturing Technologies for Application in Evaporative Cooling Systems.
Polymers (Basel)
November 2024
Centro Tecnológico del Plástico Andaltec, Ampliación Polígono Cañada de la Fuente, Calle Vilches 34, 23600 Martos, Spain.
Evaporative cooling systems have emerged as low-energy consumption alternatives to traditional vapor compression systems for building air conditioning. This study explored the feasibility of utilizing polymeric foamed materials produced through additive manufacturing as wetting materials in evaporative cooling systems. Specifically, two different commercial polylactic acid filaments, each containing a percentage of a chemical blowing agent, were studied.
View Article and Find Full Text PDFEffect of thermoplastic starch/poly(lactic acid) weight fraction on phase morphology and performance of biodegradable blends and their jute fiber composites.
Int J Biol Macromol
December 2024
Department of Packaging and Materials Technology, Faculty of Agro-Industry, Kasetsart University, Bangkok 10900, Thailand; Center for Advanced Studies for Agriculture and Food (CASAF), Kasetsart University Institute for Advanced Studies (KUIAS), Kasetsart University, Bangkok 10900, Thailand. Electronic address:
The present work investigates the phase morphology and properties of biodegradable thermoplastic starch (TPS)-poly(lactic acid) (PLA) blends and their jute fiber (JF) biocomposites. The TPS/PLA blends and TPS/PLA/JF composites were fabricated using a twin-screw extruder and then injection molded into the test specimens, varying the TPS/PLA weight fractions (80/20, 60/40, 40/60, and 20/80) while keeping the JF content constant (10 wt%). At 80 wt% TPS, the TPS/PLA blend showed a co-continuous structure, whereas the remaining blends (20, 40, and 60 wt% TPS) exhibited a TPS droplets-PLA matrix structure.
View Article and Find Full Text PDFOsteogenic citric acid linked chitosan coating of 3D-printed PLA scaffolds for preventing implant-associated infections.
Int J Biol Macromol
December 2024
School of Biosciences & Bioengineering, IIT Mandi, HP, India; Indian Knowledge System and Mental Health Applications Centre, IIT Mandi, HP, India; BioX Centre, IIT Mandi, HP, India; Advanced Materials Research Centre, IIT Mandi, HP, India; Technology Innovation Hub in Human-Computer Interaction (iHub), HP, India. Electronic address:
>25 % of the patients who receive orthopedic implants have been reported with implant-associated osteomyelitis, which can result in inflammation, osteolysis, and aseptic loosening of implants. Current treatment methods doesn't ensure defect healing and prevention from reinfection. Thermoplastic-based 3D-printed scaffolds offer a bioresorbable, biocompatible, and mechanical strong implant system.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!