Poly(lactic acid)-based polymer composites with high electric and thermal conductivity and their characterization

Abstract

Electrically and thermally conductive polymer composites on the basis of biodegradable poly(lactic acid) (PLA) were developed and studied in this work. Pristine single-walled carbon nanotubes (CNTs) and powder of natural graphite (G) were used as fillers in polymer composites. PLA-based composites were prepared by melt-compounding method. The volume resistivity of PLA/CNT composites can be changed by more than ten orders of magnitude compared to that for neat PLA. The thermal conductivity of PLA/G composites can be changed from 0.193 W⋅m⁻¹⋅K⁻¹ (neat PLA) up to 2.73 W⋅m⁻¹⋅K⁻¹. Loading small quantity of CNTs into PLA/G composites increases the thermal conductivity not less than by 40% of magnitude. Besides, all developed PLA-based composites are suitable for processing by injection molding, extrusion or additive manufacturing technology (3D printing).

Original language	English
Pages (from-to)	241-248
Number of pages	8
Journal	Polymer Testing
Volume	58
DOIs	https://doi.org/10.1016/j.polymertesting.2016.12.033
Publication status	Published - 1 Apr 2017

Keywords

Dielectric spectroscopy
Electrically and thermally conductive polymer composites
Melt flow index
Poly(lactic acid)
Thermal conductivity

ASJC Scopus subject areas

Polymers and Plastics
Organic Chemistry

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10.1016/j.polymertesting.2016.12.033

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Lebedev, S. M., Gefle, O. S., Amitov, E. T., Berchuk, D. Y., & Zhuravlev, D. V. (2017). Poly(lactic acid)-based polymer composites with high electric and thermal conductivity and their characterization. Polymer Testing, 58, 241-248. https://doi.org/10.1016/j.polymertesting.2016.12.033

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title = "Poly(lactic acid)-based polymer composites with high electric and thermal conductivity and their characterization",

abstract = "Electrically and thermally conductive polymer composites on the basis of biodegradable poly(lactic acid) (PLA) were developed and studied in this work. Pristine single-walled carbon nanotubes (CNTs) and powder of natural graphite (G) were used as fillers in polymer composites. PLA-based composites were prepared by melt-compounding method. The volume resistivity of PLA/CNT composites can be changed by more than ten orders of magnitude compared to that for neat PLA. The thermal conductivity of PLA/G composites can be changed from 0.193 W⋅m−1⋅K−1 (neat PLA) up to 2.73 W⋅m−1⋅K−1. Loading small quantity of CNTs into PLA/G composites increases the thermal conductivity not less than by 40% of magnitude. Besides, all developed PLA-based composites are suitable for processing by injection molding, extrusion or additive manufacturing technology (3D printing).",

keywords = "Dielectric spectroscopy, Electrically and thermally conductive polymer composites, Melt flow index, Poly(lactic acid), Thermal conductivity",

author = "Lebedev, {S. M.} and Gefle, {O. S.} and Amitov, {E. T.} and Berchuk, {D. Yu} and Zhuravlev, {D. V.}",

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AU - Lebedev, S. M.

AU - Gefle, O. S.

AU - Amitov, E. T.

AU - Berchuk, D. Yu

AU - Zhuravlev, D. V.

PY - 2017/4/1

Y1 - 2017/4/1

N2 - Electrically and thermally conductive polymer composites on the basis of biodegradable poly(lactic acid) (PLA) were developed and studied in this work. Pristine single-walled carbon nanotubes (CNTs) and powder of natural graphite (G) were used as fillers in polymer composites. PLA-based composites were prepared by melt-compounding method. The volume resistivity of PLA/CNT composites can be changed by more than ten orders of magnitude compared to that for neat PLA. The thermal conductivity of PLA/G composites can be changed from 0.193 W⋅m−1⋅K−1 (neat PLA) up to 2.73 W⋅m−1⋅K−1. Loading small quantity of CNTs into PLA/G composites increases the thermal conductivity not less than by 40% of magnitude. Besides, all developed PLA-based composites are suitable for processing by injection molding, extrusion or additive manufacturing technology (3D printing).

AB - Electrically and thermally conductive polymer composites on the basis of biodegradable poly(lactic acid) (PLA) were developed and studied in this work. Pristine single-walled carbon nanotubes (CNTs) and powder of natural graphite (G) were used as fillers in polymer composites. PLA-based composites were prepared by melt-compounding method. The volume resistivity of PLA/CNT composites can be changed by more than ten orders of magnitude compared to that for neat PLA. The thermal conductivity of PLA/G composites can be changed from 0.193 W⋅m−1⋅K−1 (neat PLA) up to 2.73 W⋅m−1⋅K−1. Loading small quantity of CNTs into PLA/G composites increases the thermal conductivity not less than by 40% of magnitude. Besides, all developed PLA-based composites are suitable for processing by injection molding, extrusion or additive manufacturing technology (3D printing).

KW - Dielectric spectroscopy

KW - Electrically and thermally conductive polymer composites

KW - Melt flow index

KW - Poly(lactic acid)

KW - Thermal conductivity

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