Performance comparison of the 3D-printed and injection-molded PLA and its elastomer blend and fiber composites

Date

2019-04-01

Author

Kaynak, Cevdet

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

181
views

0
downloads

The purpose of this study was to compare the performance of polylactide (PLA)-based materials shaped by the traditional injection molding technique versus three-dimensional (3D)-printing additive manufacturing. Comparisons were performed not only for neat PLA but also for its thermoplastic polyurethane elastomer (TPU) blend and for its E-glass fiber (GF)-reinforced composites. Performance comparison of the injection-molded and 3D-printed specimens was especially conducted to compare their mechanical properties (strength-modulus-toughness) by tensile, flexural, and fracture toughness tests. Other comparisons such as their macro-level appearances, fracture surface morphology, and thermal behavior were also performed by photographic images, scanning electron microscopy, differential scanning calorimetry, and thermogravimetric analysis. It can be concluded that the use of 3D-printing in the shaping of neat PLA and PLA/TPU blend was generally very beneficial; on the other hand, due to the differences in the orientation of the GF reinforcements, there could be certain reductions in the mechanical performance of PLA/GF and PLA/TPU/GF composite specimens.

Subject Keywords

Thermoplastic polyurethane elastomer, 3D-printing, Injection molding, Polylactide, Glass fiber

URI

https://hdl.handle.net/11511/41154

Journal

JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS

DOI

https://doi.org/10.1177/0892705718772867

Collections

Department of Metallurgical and Materials Engineering, Article

Suggestions

OpenMETU
Core

Effects of glass fiber reinforcement and thermoplastic elastomer blending on the mechanical performance of polylactide Varsavas, S. Deniz; Kaynak, Cevdet (2018-06-01) The purpose of this study was to investigate how optimum mechanical properties (strength-modulus-toughness) of inherently very brittle polylactide (PLA) could be obtained by reinforcing with E-glass fibers (GF) and blending with thermoplastic polyurethane elastomer (TPU). Composites and blends were compounded by twin-screw extruder melt mixing, while specimens were shaped by injection molding. SEM analyses revealed that 15 wt% GF and 10 wt% TPU domains, alone and together, could be uniformly distributed in ...
Mechanical behaviour of polymeric lattice structures produced by additive manufacturing Kalaycıoğlu, Şükrü Güray; Özerinç, Sezer; Department of Mechanical Engineering (2022-11) Additive manufacturing (AM) is a manufacturing method based on the layer-by-layer deposition of the desired geometry. Polymer AM provides means to produce compliant polymeric structures for impact-absorbing applications. The recent introduction of foaming elastomeric filaments opened a new design space for achieving optimized impact absorbance performance. This thesis investigates this route through the mechanical testing of solid and cellular polymer foam structures produced by additive manufacturing. The...
Performance of polylactide biopolymer as matrix material for woven fiber composite laminates Demirok, Gokberk; Kaynak, Cevdet (2022-01-01) The first purpose of this study was, as the first time in the literature, to investigate usability of polylactide (PLA) biopolymer as the matrix of high-performance composite laminated structures having woven forms of glass and carbon fibers. For this purpose, 2-14 layers of 2 × 2 twill Carbon Fiber (CF) and 1 × 1 plain weave Glass Fiber (GF) forms were stacked by PLA powders followed by consolidation of these layers by compression molding technique. After conducting various tests and analysis it was observ...
Mechanical properties of soft liner-poly(methyl methacrylate)-based denture material Usanmaz, Ali; Latifoglu, MA; Dogan, A; Akkas, N; Yetmez, M (Wiley, 2002-07-18) In this study, the mechanical properties of two different permanent soft lining materials and their bonding to poly(methyl methacrylate) (PMMA) were compared. Both of the soft liners were heat-cured commercial materials. The polymerization was carried out by conventional methods suggested by manufacturer, and the curing was done at the temperature of boiling water for 5, 15, 25, and 35 min. The sample groups were tested in the computer-aided tensile-testing machine at a rate of 2 mm/min. The slow rate helps...
Isocyanate functionalization of nano-boehmite for the synthesis of polyurethane organic-inorganic hybrid materials Eroğlu, Gülden; Gündüz, Güngör; Çolak, Üner; Department of Polymer Science and Technology (2011) In this study, organic-inorganic hybrid materials were prepared from polyurethane and boehmite. It was achieved by polymerizing monomers in the presence of functional nano-particles of boehmite with cyanate groups. The produced polyurethane organic-inorganic hybrid materials with enhanced mechanical properties were used for coating applications. Plate-like boehmite nano-particles were produced by hydrothermal process from aluminum hydroxide which was first ground in a high energy ball-mill, and then, proces...

Citation Formats

C. Kaynak, “Performance comparison of the 3D-printed and injection-molded PLA and its elastomer blend and fiber composites,” JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS, pp. 501–520, 2019, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/41154.