Improving the ductility of polylactic acid parts produced by fused deposition modeling through polyhydroxyalkanoate additions

Date

2019-11-01

Author

Kaygusuz, Burçin
Özerinç, Sezer

Metadata

Show full item record

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

Item Usage Stats

219
views

0
downloads

Polylactic acid (PLA) is one of the most commonly used materials for fused deposition modeling (FDM) due to its low cost, biocompatibility, and desirable printing characteristics. However, its low ductility is a major disadvantage for engineering applications where high damage tolerance is needed. This study investigates the feasibility of polyhydroxyalkanoate (PHA) additions to PLA for improving the ductility of parts produced by FDM. Thermal and mechanical behavior of PLA/PHA specimens containing 12 wt % PHA is investigated for a range of printing nozzle temperatures. All PLA/PHA specimens exhibit amorphous PLA phase with semicrystalline PHA and possess outstanding ductility exceeding 160% for nozzle temperatures in the range of 200 degrees C-240 degrees C. Lower and higher nozzle temperatures result in low ductility, similar to that of pure PLA. Overall, PLA/PHA is a very promising polymer blend for FDM processes, providing a combination of sufficient strength with excellent damage tolerance. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48154.

Subject Keywords

3D printing, Polymer composites, Polylactic acid, Polyhydroxyalkanoate, Mechanical properties, Fused deposition modeling, Ductility

URI

https://hdl.handle.net/11511/37098

Journal

Journal of Applied Polymer Science

DOI

https://doi.org/10.1002/app.48154

Collections

Department of Mechanical Engineering, Article

Suggestions

OpenMETU
Core

Tunable mechanical properties of thermoplastic foams produced by additive manufacturing Alduais, Abdullah; Özerinç, Sezer (2023-3-01) Fused deposition modeling (FDM) is a versatile additive manufacturing technique for producing polymeric parts. Incorporating a foaming agent into the filament material enables the FDM-printing of thermoplastic foams, which opens up new possibilities for achieving desired mechanical property combinations. This study explored the process-property design space of FDM-printed polylactic acid (PLA) foams. Tensile and compression specimens were produced at a wide range of printing parameters using a commercial th...
Mechanical properties of nylon parts produced by fused deposition modeling Hasçelik, Sabit; Öztürk, Ömer T.; Özerinç, Sezer (2021-01-01) Fused deposition modeling (FDM) is a widely used additive manufacturing technique for producing polymeric parts. While most commonly used FDM filaments are PLA and ABS, nylon is a widely used thermoplastic polymer in industry. This study investigated the mechanical properties of FDM-produced specimens made of nylon and quantified the effect of process parameters such as raster orientation and nozzle temperature on the mechanical properties. As the nozzle temperature increases, specimens become stronger with...
Characterization of novel materials for fused filament fabrication AL-DUAIS, ABDULLAH ABDULRAHMAN NAJI; Özerinç, Sezer; Kazanç Özerinç, Feyza; Department of Mechanical Engineering (2021-6-24) Fused filament fabrication (FFF) is a polymer additive manufacturing technology that is suitable for a wide range of applications due to its low cost and ease of use. This thesis investigated two types of novel materials for FFF use. First, a foaming PLA filament is considered and the mechanical properties of 3D printed specimens using this filament is characterized. The results show that the strength, modulus and density of the foaming PLA can be tuned over a wide range of values by varying FFF process par...
Improving the laser damage resistance of oxide thin films and multilayers via tailoring ion beam sputtering parameters Cosar, M. B.; Ozhan, A. E. S.; Aydogdu, G. H. (2015-05-01) Ion beam sputtering is one of the widely used methods for manufacturing laser optical components due to its advantages such as uniformity, reproducibility, suitability for multilayer coatings and growth of dielectric materials with high packing densities. In this study, single Ta2O5 layers and Ta2O5/SiO2 heterostructures were deposited on optical quality glass substrates by dual ion beam sputtering. We focused on the effect of deposition conditions like substrate cleaning, assistance by 12 cm diameter ion b...
The formation of smooth, defect-free, stoichiometric silicon carbide films from a polymeric precursor Pitcher, Michael; Bianconi, Patricia (2006-04-20) Silicon carbide (SiC) materials, which are used in a variety of applications, are often produced using powder processing, sintering or bulk crystal growing techniques. The formation of silicon carbide films or shaped products, via these methods, is often extremely difficult and/or requires high temperatures. Here we report the synthesis and characterization of a polymeric precursor, Polymethylsilyne (PMSy), and it subsequent conversion to beta-SiC. The polymer is simple to synthesize and is easily manipulat...

Citation Formats

B. Kaygusuz and S. Özerinç, “Improving the ductility of polylactic acid parts produced by fused deposition modeling through polyhydroxyalkanoate additions,” Journal of Applied Polymer Science, pp. 0–0, 2019, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/37098.