Interfacial chemistry using a bifunctional coupling agent for enhanced electrical properties of carbon nanotube based composites

Socher, Robert; Jakisch, Lothar; Krause, Beate; Oertel, Ulrich; Voit, Brigitte; Pötschke, Petra

doi:10.1016/j.polymer.2013.07.064

Cited by 3 publications

(2 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The covalent attachment of tyrosine on the external surface of the CNTs resulted in the appearance of a free radical, localized in the graphitic surface. Ncontaining bifunctional coupling agent with one oxazoline and one benzoxazinone group was covalently attached to MWCNTs in order to promote their reaction with polyamide 12 during melt mixing [311].…”

Section: Treatment Of Cnts And/or Oxidized/o-functionalized Cnts Withmentioning

confidence: 99%

One-dimensional nitrogen-containing carbon nanostructures

Ćirić‐Marjanović

Pašti

Mentus

2015

Progress in Materials Science

108

View full text Add to dashboard Cite

Section: Treatment Of Cnts And/or Oxidized/o-functionalized Cnts Withmentioning

confidence: 99%

One-dimensional nitrogen-containing carbon nanostructures

Ćirić‐Marjanović

Pašti

Mentus

2015

Progress in Materials Science

108

View full text Add to dashboard Cite

“…CNTs are well known to be an excellent reinforcing material . It is also electrically conductive, and for this reason, incorporation of CNTs with electrically insulating polymers creates composites with dramatically altered electrical characteristics . Because of the notably high aspect ratio compared to other reinforcing and/or conductive fillers such as carbon black and clay, percolation threshold of CNTs can be achieved at much lower concentrations.…”

Section: Introductionmentioning

confidence: 99%

Properties characterisation of polycarbonate and multi‐walled carbon nanotubes composites prepared by solution technique

Thaithae¹,

Antonio

Wattanachai

2015

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

Polycarbonate (PC) and multi-walled carbon nanotubes (MWNTs) composites were prepared by solution method where 0-20% w/w MWNTs were added into two types of PC solutions, i.e. a low and a high molecular weight solution. The composites were processed into plastic sheets using a compression moulding technique in order to study their mechanical, electrical, physical, and rheological properties. The results showed that addition of MWNTs at 1% w/w enhanced the tensile strength and modulus by up to 23 and 75%, respectively, and reduced their electrical resistivity significantly from being an insulator (1 × 10 16 À 1 × 10 17 Ω-cm) to a semi-conductor (8 × 10 8 Ω-cm), indicating a percolation threshold. A slight improvement in the mechanical properties was observed at up to 4% w/w MWNTs; however, the volume resistivity remained unchanged. As the amount of MWNTs increased >4% w/w, the mechanical properties drastically deteriorated because of the MWNTs agglomerating and segregating onto the surfaces. The segregation of the agglomerates was also supported by the surface resistivity and shear viscosity results, which decreased as MWNTs increased. MWNTs were found to interact better with the low molecular weight PC matrix and produced more homogeneous composites. The studies of composite colour and MWNTs dispersion confirmed the findings of both mechanical and electrical properties. This research demonstrates the possibility of preparation of PC and MWNTs composites at high MWNTs concentrations, which can be very useful for a master batch process.

show abstract

Microstructure and mechanical properties of 7075 composites reinforced with TiO₂-coated carbon nanotubes

Shuai

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part E:

View full text Add to dashboard Cite

Microstructure and mechanical properties of 7075 aluminum matrix composites (AMCs) reinforced with TiO2-coated carbon nanotubes (TiO2@CNTs) prepared by high energy ultrasonic assisted casting were investigated. In this paper, a novel method was developed to increase interfacial bonding by coating TiO2 on the surface of CNTs. The results showed that high-energy ultrasound can effectively promote the uniform dispersion of TiO2@CNTs in the melt, and the TiO2@CNTs can refine the α-Al phase. The optimal addition of TiO2@CNTs was 0.9wt.%, and the optimal ultrasonic time was 10 min. The yield strength, ultimate tensile strength, and microhardness of the as-cast composites prepared under the optimal parameters were 201.22 MPa, 261.79 MPa, and 126.02 HV, respectively, which increased by 40.9%, 32%, and 32.2% compared with those of the matrix, respectively. The semi-coherent interface was formed at the TiO2/α-Al interface and well-bonded interfaces between the CNTs and the matrix were formed. The fine grain strengthening, thermal mismatch strengthening, Orowan strengthening, and direct bearing strengthening were considered as four strengthening mechanisms that occurred simultaneously, leading to excellent mechanical properties of as-cast 7075-TiO2@CNTs composites.

show abstract

Interfacial chemistry using a bifunctional coupling agent for enhanced electrical properties of carbon nanotube based composites

Cited by 3 publications

References 26 publications

One-dimensional nitrogen-containing carbon nanostructures

One-dimensional nitrogen-containing carbon nanostructures

Properties characterisation of polycarbonate and multi‐walled carbon nanotubes composites prepared by solution technique

Microstructure and mechanical properties of 7075 composites reinforced with TiO₂-coated carbon nanotubes

Contact Info

Product

Resources

About

Interfacial chemistry using a bifunctional coupling agent for enhanced electrical properties of carbon nanotube based composites

Cited by 3 publications

References 26 publications

One-dimensional nitrogen-containing carbon nanostructures

One-dimensional nitrogen-containing carbon nanostructures

Properties characterisation of polycarbonate and multi‐walled carbon nanotubes composites prepared by solution technique

Microstructure and mechanical properties of 7075 composites reinforced with TiO2-coated carbon nanotubes

Contact Info

Product

Resources

About

Microstructure and mechanical properties of 7075 composites reinforced with TiO₂-coated carbon nanotubes