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Tailoring diamondised nanocarbon-loaded poly(lactic acid) composites for highly electroactive surfaces: extrusion and characterisation of filaments for improved 3D-printed surfaces
Abstract
A new 3D-printable composite has been developed dedicated to electroanalytical applications. Two types of diamondised nanocarbons - detonation nanodiamonds (DNDs) and boron-doped carbon nanowalls (BCNWs) - were added as fillers in poly(lactic acid) (PLA)-based composites to extrude 3D filaments. Carbon black served as a primary filler to reach high composite conductivity at low diamondised nanocarbon concentrations (0.01 to 0.2 S/cm, depending on the type and amount of filler). The aim was to thoroughly describe and understand the interactions between the composite components and how they affect the rheological, mechanical and thermal properties, and electrochemical characteristics of filaments and material extrusion printouts. The electrocatalytic properties of composite-based electrodes, fabricated with a simple 3D pen, were evaluated using multiple electrochemical techniques (cyclic and differential pulse voltammetry and electrochemical impedance spectroscopy). The results showed that the addition of 5 wt% of any of the diamond-rich nanocarbons fillers significantly enhanced the redox process kinetics, leading to lower redox activation overpotentials compared with carbon black–loaded PLA. The detection of dopamine was successfully achieved through fabricated composite electrodes, exhibiting lower limits of detection (0.12 μM for DND and 0.18 μM for BCNW) compared with the reference CB-PLA electrodes (0.48 μM). The thermogravimetric results demonstrated that both DND and BCNW powders can accelerate thermal degradation. The presence of diamondised nanocarbons, regardless of their type, resulted in a decrease in the decomposition temperature of the composite. The study provides insight into the interactions between composite components and their impact on the electrochemical properties of 3D-printed surfaces, suggesting electroanalytic potential.
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- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1007/s00604-023-05940-7
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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MICROCHIMICA ACTA
no. 190,
ISSN: 0026-3672 - Language:
- English
- Publication year:
- 2023
- Bibliographic description:
- Cieślik M., Susik A., Banasiak M., Bogdanowicz R., Formela K., Ryl J.: Tailoring diamondised nanocarbon-loaded poly(lactic acid) composites for highly electroactive surfaces: extrusion and characterisation of filaments for improved 3D-printed surfaces// MICROCHIMICA ACTA -, (2023), s.370-
- DOI:
- Digital Object Identifier (open in new tab) 10.1007/s00604-023-05940-7
- Sources of funding:
- Verified by:
- Gdańsk University of Technology
Referenced datasets
- dataset New 3D printable filaments with nanodiamonds, physicochemical additives characteristics and electrochemical activity
- dataset Physicochemical studies (BET) of nanoparticles used for 3D printable conductive composites
- dataset Physicochemical studies (Raman, XRD) of poly(lactic acid)-carbon black-nanodiamond composites
- dataset Thermal stability analysis of poly(lactic acid)-carbon black-nanodiamond composite
- dataset Rheology studies of poly(lactic acid)-carbon black-nanodiamond composites
- dataset Electrochemical studies of poly(lactic acid)-carbon black-nanodiamond composites
- dataset Mechanical studies of poly(lactic acid)-carbon black-nanodiamond composites
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