Electrically conductive high-performance thermoplastic filaments for fused filament fabrication

Ozge Kaynan; Alptekin Yıldız; Yunus Emre Bozkurt; Elif Ozden Yenigun; Hulya Cebeci

doi:10.1016/j.compstruct.2020.111930

Electrically conductive high-performance thermoplastic filaments for fused filament fabrication

Ozge Kaynan, Alptekin Yıldız, Yunus Emre Bozkurt, Elif Ozden Yenigun^*, Hulya Cebeci

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

Conductive polyetherimide (PEI)-based filaments can fill the gap between the design and manufacturing of functional and structural components through additive manufacturing. This study systematically describes the fabrication of carbon nanotube (CNTs)-reinforced PEI filaments, complemented by a custom-built extrusion process facilitating low weight fraction of nanomaterials. Neat PEI and CNTs/PEI filaments at different CNTs fractions ranging from 0.1 to 7 wt% were fabricated. Supported by morphology analysis, the rheological percolation was found to be higher (0.25 wt% CNTs/PEI) than electrical percolation (0.1 wt% CNTs/PEI) since the system reached an electrical percolation within the formation of a continuous conductive path at lower CNTs loadings. With the 7 wt% CNTs loading, the highest electrical conductivity of CNTs/PEI filaments was reported as 2.57×10^-1 S/cm. A 55% enhancement in tensile modulus was achieved when 5 wt% CNTs were introduced, but in a trade-off in elongation at break ca. 65%.

Original language	English
Article number	111930
Journal	Composite Structures
Volume	237
DOIs	https://doi.org/10.1016/j.compstruct.2020.111930
Publication status	Published - 1 Apr 2020

Bibliographical note

Publisher Copyright:
© 2020 Elsevier Ltd

Funding

The authors are thankful for the Boeing Global Co. project numbered 2016000269 for financial support. The authors thank TUBITAK 3501 (Project No: 116M427) for the postgraduate student scholarship support for Ozge Kaynan. The authors would also like to thank Dr. Gülcan Çorapçıoğlu and Barış Emre Kıral in SUNUM, Sabancı University for TEM and mechanical characterizations, and Assoc. Prof. Güralp Özkoç at Kocaeli University for their characterization supports. The authors are thankful for the Boeing Global Co. project numbered 2016000269 for financial support. The authors thank TUBITAK 3501 (Project No: 116M427) for the postgraduate student scholarship support for Ozge Kaynan. The authors would also like to thank Dr. G?lcan ?orap??o?lu and Bar?? Emre K?ral in SUNUM, Sabanc? University for TEM and mechanical characterizations, and Assoc. Prof. G?ralp ?zko? at Kocaeli University for their characterization supports.

Funders	Funder number
TUBITAK 3501	116M427
Boeing	2016000269
Kocaeli Üniversitesi

Keywords

Carbon nanotubes
Fused filament fabrication
Polyetherimide
Polymer nanocomposite

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.compstruct.2020.111930

Cite this

@article{f68c75eaee294217956795d5e4fbbc4e,

title = "Electrically conductive high-performance thermoplastic filaments for fused filament fabrication",

abstract = "Conductive polyetherimide (PEI)-based filaments can fill the gap between the design and manufacturing of functional and structural components through additive manufacturing. This study systematically describes the fabrication of carbon nanotube (CNTs)-reinforced PEI filaments, complemented by a custom-built extrusion process facilitating low weight fraction of nanomaterials. Neat PEI and CNTs/PEI filaments at different CNTs fractions ranging from 0.1 to 7 wt% were fabricated. Supported by morphology analysis, the rheological percolation was found to be higher (0.25 wt% CNTs/PEI) than electrical percolation (0.1 wt% CNTs/PEI) since the system reached an electrical percolation within the formation of a continuous conductive path at lower CNTs loadings. With the 7 wt% CNTs loading, the highest electrical conductivity of CNTs/PEI filaments was reported as 2.57×10-1 S/cm. A 55% enhancement in tensile modulus was achieved when 5 wt% CNTs were introduced, but in a trade-off in elongation at break ca. 65%.",

keywords = "Carbon nanotubes, Fused filament fabrication, Polyetherimide, Polymer nanocomposite",

author = "Ozge Kaynan and Alptekin Yıldız and Bozkurt, {Yunus Emre} and {Ozden Yenigun}, Elif and Hulya Cebeci",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2020",

month = apr,

day = "1",

doi = "10.1016/j.compstruct.2020.111930",

language = "English",

volume = "237",

journal = "Composite Structures",

issn = "0263-8223",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Electrically conductive high-performance thermoplastic filaments for fused filament fabrication

AU - Kaynan, Ozge

AU - Yıldız, Alptekin

AU - Bozkurt, Yunus Emre

AU - Ozden Yenigun, Elif

AU - Cebeci, Hulya

PY - 2020/4/1

Y1 - 2020/4/1

N2 - Conductive polyetherimide (PEI)-based filaments can fill the gap between the design and manufacturing of functional and structural components through additive manufacturing. This study systematically describes the fabrication of carbon nanotube (CNTs)-reinforced PEI filaments, complemented by a custom-built extrusion process facilitating low weight fraction of nanomaterials. Neat PEI and CNTs/PEI filaments at different CNTs fractions ranging from 0.1 to 7 wt% were fabricated. Supported by morphology analysis, the rheological percolation was found to be higher (0.25 wt% CNTs/PEI) than electrical percolation (0.1 wt% CNTs/PEI) since the system reached an electrical percolation within the formation of a continuous conductive path at lower CNTs loadings. With the 7 wt% CNTs loading, the highest electrical conductivity of CNTs/PEI filaments was reported as 2.57×10-1 S/cm. A 55% enhancement in tensile modulus was achieved when 5 wt% CNTs were introduced, but in a trade-off in elongation at break ca. 65%.

AB - Conductive polyetherimide (PEI)-based filaments can fill the gap between the design and manufacturing of functional and structural components through additive manufacturing. This study systematically describes the fabrication of carbon nanotube (CNTs)-reinforced PEI filaments, complemented by a custom-built extrusion process facilitating low weight fraction of nanomaterials. Neat PEI and CNTs/PEI filaments at different CNTs fractions ranging from 0.1 to 7 wt% were fabricated. Supported by morphology analysis, the rheological percolation was found to be higher (0.25 wt% CNTs/PEI) than electrical percolation (0.1 wt% CNTs/PEI) since the system reached an electrical percolation within the formation of a continuous conductive path at lower CNTs loadings. With the 7 wt% CNTs loading, the highest electrical conductivity of CNTs/PEI filaments was reported as 2.57×10-1 S/cm. A 55% enhancement in tensile modulus was achieved when 5 wt% CNTs were introduced, but in a trade-off in elongation at break ca. 65%.

KW - Carbon nanotubes

KW - Fused filament fabrication

KW - Polyetherimide

KW - Polymer nanocomposite

UR - http://www.scopus.com/inward/record.url?scp=85078405853&partnerID=8YFLogxK

U2 - 10.1016/j.compstruct.2020.111930

DO - 10.1016/j.compstruct.2020.111930

M3 - Article

AN - SCOPUS:85078405853

SN - 0263-8223

VL - 237

JO - Composite Structures

JF - Composite Structures

M1 - 111930

ER -

Electrically conductive high-performance thermoplastic filaments for fused filament fabrication

Abstract

Bibliographical note

Funding

Keywords

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this