Detail publikace

PLA toughening via bamboo-inspired 3D printed structural design

SVATÍK, J. LEPCIO, P. ONDREÁŠ, F. ZÁRYBNICKÁ, K. ZBONČÁK, M. MENČÍK, P. JANČÁŘ, J.

Originální název

PLA toughening via bamboo-inspired 3D printed structural design

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Bioinspired structures can attain mechanical properties unseen in conventional artificial materials. Specifically, the introduction of a cellular structure with a precisely designed distribution of cells, cell sizes, and cell walls is expected to enhance the mechanical response. Polylactic acid (PLA) is a biodegradable polymer produced from renewable resources with very interesting properties and good three-dimensional (3D) printing processability. However, its embrittlement during ageing at room temperature after a very short period of time (a few hours) significantly reduces its usability for advanced applications. Intense effort has been invested in improving its toughness via composition modification. However, this approach can worsen some other properties, make processing more difficult, and increase the carbon footprint. Therefore, fused deposition modelling (FDM) 3D printing was used to manufacture porous bamboo-inspired structures of unmodified PLA. The toughening of PLA solely by the pore gradient, which controlled the energy dissipation mechanism, was introduced for the first time. Improvement of the ductility and work at break was observed especially for notched specimens. Prevention of catastrophic failure could enable the use of gradient porous materials in structural components. The fundamental relationships and practical hints resulting from the work provide a foundation for the future design of toughened 3D printed structures.

Klíčová slova

Porosity gradient, 3D printing, PLA toughening, Polymer foams, Cellular structures

Autoři

SVATÍK, J.; LEPCIO, P.; ONDREÁŠ, F.; ZÁRYBNICKÁ, K.; ZBONČÁK, M.; MENČÍK, P.; JANČÁŘ, J.

Vydáno

1. 12. 2021

Nakladatel

Elsevier

Místo

London, UK

ISSN

0142-9418

Periodikum

POLYMER TESTING

Ročník

104

Číslo

107405

Stát

Spojené království Velké Británie a Severního Irska

Strany od

1

Strany do

9

Strany počet

9

URL

https://www.sciencedirect.com/science/article/pii/S0142941821003494

Plný text v Digitální knihovně

http://hdl.handle.net/11012/203141

BibTex

@article{BUT173041,
  author="Juraj {Svatík} and Petr {Lepcio} and František {Ondreáš} and Klára {Zárybnická} and Marek {Zbončák} and Přemysl {Menčík} and Josef {Jančář}",
  title="PLA toughening via bamboo-inspired 3D printed structural design",
  journal="POLYMER TESTING",
  year="2021",
  volume="104",
  number="107405",
  pages="1--9",
  doi="10.1016/j.polymertesting.2021.107405",
  issn="0142-9418",
  url="https://www.sciencedirect.com/science/article/pii/S0142941821003494"
}