Tags

Type your tag names separated by a space and hit enter

Tuning the Network Structure in Poly(vinylidene fluoride)/Carbon Nanotube Nanocomposites Using Carbon Black: Toward Improvements of Conductivity and Piezoresistive Sensitivity.
ACS Appl Mater Interfaces. 2016 Jun 08; 8(22):14190-9.AA

Abstract

Piezoresistive poly(vinylidene fluoride) (PVDF) nanocomposites are very intriguing for strain sensor applications in structural health monitoring (SHM) systems. In general, high piezoresistive sensitivity combined with broad measurable strain ranges are greatly favored in those sensors. Here, a facile strategy, i.e. constructing strain susceptible conductive networks using hybrid filler systems consisting of carbon nanotubes (CNTs, 0.5-1 wt %) and carbon black (CB, 0.5-4 wt %), was introduced to tune both electrical conductivity and piezoresistive sensitivity of melt mixed PVDF nanocomposites. At the same filler content CNTs, due to their larger aspect ratio, contribute more to electrical conductivity improvements of nanocomposites than CB, while contacts between CB particles are more sensitive to tensile strain. With retained ductility of PVDF, tunable electrical conductivity and ΔR/R0-strain sensitivity can be achieved by combining the advantages of CNTs and CB by adjusting the conductive network structure. Conductivity improvement is more remarkable if the mass ratio of CNTs to CB (mCNTs/mCB), varied between 1:1 and 1:4, is higher in hybrid filler compositions. Lower mCNTs/mCB ratios result in higher ΔR/R0 values in PVDF nanocomposites whether they have the same content of total filler or similar/the same initial electrical resistivity. At 10% tensile strain, the highest ΔR/R0 of 0.65 was obtained for the nanocomposite filled with 0.5 wt % CNTs and 0.5 wt % CB, while that for the counterpart containing 1 wt % CNTs is 0.35 at the same strain. The concept of using hybrid fillers provides a low-cost and effective way to fabricate piezoresistive polymer nanocomposites toward SHM applications.

Authors+Show Affiliations

Leibniz Institute of Polymer Research Dresden (IPF) , Hohe Str. 6, 01069, Dresden, Germany. Organic Chemistry of Polymers, Technische Universität Dresden , 01062 Dresden, Germany.Leibniz Institute of Polymer Research Dresden (IPF) , Hohe Str. 6, 01069, Dresden, Germany.Leibniz Institute of Polymer Research Dresden (IPF) , Hohe Str. 6, 01069, Dresden, Germany.Leibniz Institute of Polymer Research Dresden (IPF) , Hohe Str. 6, 01069, Dresden, Germany.Leibniz Institute of Polymer Research Dresden (IPF) , Hohe Str. 6, 01069, Dresden, Germany. Organic Chemistry of Polymers, Technische Universität Dresden , 01062 Dresden, Germany.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27171017

Citation

Ke, Kai, et al. "Tuning the Network Structure in Poly(vinylidene fluoride)/Carbon Nanotube Nanocomposites Using Carbon Black: Toward Improvements of Conductivity and Piezoresistive Sensitivity." ACS Applied Materials & Interfaces, vol. 8, no. 22, 2016, pp. 14190-9.
Ke K, Pötschke P, Wiegand N, et al. Tuning the Network Structure in Poly(vinylidene fluoride)/Carbon Nanotube Nanocomposites Using Carbon Black: Toward Improvements of Conductivity and Piezoresistive Sensitivity. ACS Appl Mater Interfaces. 2016;8(22):14190-9.
Ke, K., Pötschke, P., Wiegand, N., Krause, B., & Voit, B. (2016). Tuning the Network Structure in Poly(vinylidene fluoride)/Carbon Nanotube Nanocomposites Using Carbon Black: Toward Improvements of Conductivity and Piezoresistive Sensitivity. ACS Applied Materials & Interfaces, 8(22), 14190-9. https://doi.org/10.1021/acsami.6b03451
Ke K, et al. Tuning the Network Structure in Poly(vinylidene fluoride)/Carbon Nanotube Nanocomposites Using Carbon Black: Toward Improvements of Conductivity and Piezoresistive Sensitivity. ACS Appl Mater Interfaces. 2016 Jun 8;8(22):14190-9. PubMed PMID: 27171017.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Tuning the Network Structure in Poly(vinylidene fluoride)/Carbon Nanotube Nanocomposites Using Carbon Black: Toward Improvements of Conductivity and Piezoresistive Sensitivity. AU - Ke,Kai, AU - Pötschke,Petra, AU - Wiegand,Niclas, AU - Krause,Beate, AU - Voit,Brigitte, Y1 - 2016/05/26/ PY - 2016/5/13/entrez PY - 2016/5/14/pubmed PY - 2016/5/14/medline KW - carbon black (CB) KW - carbon nanotubes (CNTs) KW - conductive network KW - conductive polymer nanocomposites (CPNCs) KW - piezoresistivity SP - 14190 EP - 9 JF - ACS applied materials & interfaces JO - ACS Appl Mater Interfaces VL - 8 IS - 22 N2 - Piezoresistive poly(vinylidene fluoride) (PVDF) nanocomposites are very intriguing for strain sensor applications in structural health monitoring (SHM) systems. In general, high piezoresistive sensitivity combined with broad measurable strain ranges are greatly favored in those sensors. Here, a facile strategy, i.e. constructing strain susceptible conductive networks using hybrid filler systems consisting of carbon nanotubes (CNTs, 0.5-1 wt %) and carbon black (CB, 0.5-4 wt %), was introduced to tune both electrical conductivity and piezoresistive sensitivity of melt mixed PVDF nanocomposites. At the same filler content CNTs, due to their larger aspect ratio, contribute more to electrical conductivity improvements of nanocomposites than CB, while contacts between CB particles are more sensitive to tensile strain. With retained ductility of PVDF, tunable electrical conductivity and ΔR/R0-strain sensitivity can be achieved by combining the advantages of CNTs and CB by adjusting the conductive network structure. Conductivity improvement is more remarkable if the mass ratio of CNTs to CB (mCNTs/mCB), varied between 1:1 and 1:4, is higher in hybrid filler compositions. Lower mCNTs/mCB ratios result in higher ΔR/R0 values in PVDF nanocomposites whether they have the same content of total filler or similar/the same initial electrical resistivity. At 10% tensile strain, the highest ΔR/R0 of 0.65 was obtained for the nanocomposite filled with 0.5 wt % CNTs and 0.5 wt % CB, while that for the counterpart containing 1 wt % CNTs is 0.35 at the same strain. The concept of using hybrid fillers provides a low-cost and effective way to fabricate piezoresistive polymer nanocomposites toward SHM applications. SN - 1944-8252 UR - https://www.unboundmedicine.com/medline/citation/27171017/Tuning_the_Network_Structure_in_Poly_vinylidene_fluoride_/Carbon_Nanotube_Nanocomposites_Using_Carbon_Black:_Toward_Improvements_of_Conductivity_and_Piezoresistive_Sensitivity_ L2 - https://dx.doi.org/10.1021/acsami.6b03451 DB - PRIME DP - Unbound Medicine ER -
Try the Free App:
Prime PubMed app for iOS iPhone iPad
Prime PubMed app for Android
Prime PubMed is provided
free to individuals by:
Unbound Medicine.