Development of 3D printable formulations containing CNT with enhanced electrical properties

González, Gustavo; Chiappone, Annalisa; Roppolo, Ignazio; Fantino, Erika; Bertana, Valentina; Perrucci, Francesco; Scaltrito, Luciano; Pirri, Fabrizio; Sangermano, Marco

doi:10.1016/j.polymer.2016.12.051

Cited by 181 publications

(154 citation statements)

References 40 publications

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“…It is important to point out that this model only gives information about the ratio of aggregate to well-dispersed areas but does not give information about the values of each individual fraction. However, the percolation threshold obtained in this study is lower than found in other studies based on CNT doped resins for DLP 3D printing technology, which suggests a better dispersion of CNTs than those obtained in these studies with similar [27] and even higher aspect ratios of the nanofillers [29].…”

Section: Electrical Conductivitycontrasting

confidence: 82%

Mechanical and Strain-Sensing Capabilities of Carbon Nanotube Reinforced Composites by Digital Light Processing 3D Printing Technology

et al. 2020

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Mechanical and strain sensing capabilities of carbon nanotube (CNT) reinforced composites manufactured by digital light processing (DLP) 3D printing technology have been studied. Both CNT content and a post-curing treatment effects have been analyzed. It has been observed that post-curing treatment has a significant influence on mechanical properties, with an increase of Young’s modulus and glass transition temperature whereas their effect in electrical properties is not so important. Furthermore, the strain sensing tests show a linear response of electrical resistance with applied strain, with higher values of sensitivity when decreasing CNT content due to a higher interparticle distance. Moreover, the electrical sensitivity of bending tests is significantly lower than in tensile ones due to the compression subjected face effect. Therefore, the good gauge factor values (around 2–3) and the high linear response proves the applicability of the proposed nanocomposites in structural health monitoring applications.

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Section: Electrical Conductivitycontrasting

confidence: 82%

Mechanical and Strain-Sensing Capabilities of Carbon Nanotube Reinforced Composites by Digital Light Processing 3D Printing Technology

et al. 2020

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“…An enhancement in conductivity for the cross‐linked films obtained in the presence of MWCNTs was observed. This can be related to the formation of a percolating path among CNTs that allows the electrical conduction …”

Section: Resultsmentioning

confidence: 99%

A Flexible, Highly Sensitive, and Selective Chemiresistive Gas Sensor Obtained by In Situ Photopolymerization of an Acrylic Resin in the Presence of MWCNTs

Vigna

Fasoli

Cocuzza

et al. 2018

Macro Materials & Eng

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A new flexible polymeric gas sensor is developed by photocrosslinking poly(ethylene glycol) diacrylate resin (PEGDA) containing multi‐walled carbon nanotubes (MWCNTs) as conductive filler. The cured material shows a percolative threshold conductivity which changes when in contact with various gas analytes with different chemical and physical properties. The different behavior of the sensors toward the different gases is explained either on the basis of chemical affinity toward the polymeric matrix or due to the interactions that can occur between the analyte and the surface of the nanotubes in the case of the aromatic gas.

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“…Health and safety issues upon printing ultra-small nanoparticles is another vital concern in this field which should be addressed properly in the manufacturing environment. Gonzalez et al [77] studied the blend of PEGDA and PEGMEMA and mixed the MWNTs into it. The authors achieved the CNT dispersion by sonicating PEGMEMA/CNT mixture, followed by high-shear homogenizing the mixture after addition of PEGDA resin and BAPO photoinitiator.…”

Section: Processing Of Carbon Cnt/polymer Nanocomposites Using 3dpmentioning

confidence: 99%

Polymer/Carbon Nanotubes (CNT) Nanocomposites Processing Using Additive Manufacturing (Three-Dimensional Printing) Technique: An Overview

Ghoshal

2017

Fibers

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Additive manufacturing (AM)/3D printing (3DP) is a revolutionary technology which has been around for more than two decades, although the potential of this technique was not fully explored until recently. Because of the expansion of this technology in recent years, new materials and additives are being searched for to meet the growing demand. 3DP allows accurate fabrication of complicated models, however, structural anisotropy caused by the 3DP approaches could limit robust application. A possible solution to the inferior properties of the 3DP based materials compared to that of conventionally manufactured counterparts could be the incorporation of nanoparticles, such as carbon nanotubes (CNT) which have demonstrated remarkable mechanical, electrical, and thermal properties. In this article we review some of the research, products, and challenges involved in 3DP technology. The importance of CNT dispersion in the matrix polymer is highlighted and the future outlook for the 3D printed polymer/CNT nanocomposites is presented.

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Development of 3D printable formulations containing CNT with enhanced electrical properties

Cited by 181 publications

References 40 publications

Mechanical and Strain-Sensing Capabilities of Carbon Nanotube Reinforced Composites by Digital Light Processing 3D Printing Technology

Mechanical and Strain-Sensing Capabilities of Carbon Nanotube Reinforced Composites by Digital Light Processing 3D Printing Technology

A Flexible, Highly Sensitive, and Selective Chemiresistive Gas Sensor Obtained by In Situ Photopolymerization of an Acrylic Resin in the Presence of MWCNTs

Polymer/Carbon Nanotubes (CNT) Nanocomposites Processing Using Additive Manufacturing (Three-Dimensional Printing) Technique: An Overview

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