Work

Preparation and characterization of poly(lactic acid)/boehmite alumina composites for additive manufacturing

Year: 2020

Type: conference-paper

Abstract: The purpose of this work is to investigate the suitability of boehmite alumina (BA) reinforced poly(lactic acid) (PLA) for additive manufacturing with the fused filament fabrication method. PLA filaments with 0-10 wt.% BA content were produced via melt compounding using a twin-screw extruder. Dumbbell-shaped and prismatic specimens were manufactured then by feeding the prepared filaments into a desktop 3D printer. Mechanical, morphological and melt flow properties of the developed samples were determined. The addition of BA decreased the melt flow rate of PLA, however not so much that it would have hindered its suitability for 3D printing. With increasing BA content both the strength and the stiffness of the samples increased slightly at constant deformability and toughness. Scanning electron microscopic images revealed a homogenous dispersion of BA particles within the PLA matrix, although remaining agglomerates were also observed.

Source: IOP Conference Series Materials Science and Engineering

DOI: 10.1088/1757-899x/903/1/012057

Authors: L Lendvai, I Fekete

Institution: Széchenyi István University

Language: English

Topic: Additive Manufacturing and 3D Printing Technologies

Subfield: Industrial and Manufacturing Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

Funder: Emberi Eroforrások Minisztériuma

Award: G2356896893