Electrical conductivities of carbon nanotube-filled polycarbonate/polyester blends

Xiong, Zhuo-Yue; Sun, Yuzhu; Li, Wang; Guo, Zhao‐Xia; Yu, Jian

doi:10.1007/s11426-012-4529-6

Cited by 9 publications

(9 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The SEM and TEM morphology proves that c-MWCNT shows much higher affinity with PBT phase and similar result has been reported in other research. 27 DSC Analysis. Figure 4 shows the crystallization behavior of PBT and the PBT/PC/c-MWCNT nanocomposites.…”

Section: Resultsmentioning

confidence: 99%

“…They found that the carbon nanotube distributed in the PBT phase and the conductive materials were obtained with 1 wt% carbon nanotube addition. 27 Elastomer particles and carbon nanotubes were utilized by Wang et al to improve the toughness of PBT/PC blends. They pointed out that the elastomer particles (SEBS-g-MA) enhanced the impact strength of PBT/PC blend.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Enhanced Properties of PBT/PC Blends with the Addition of Carboxyl-functionalized Multiwalled Carbon Nanotube

Hu¹,

Song²,

Lv³

et al. 2018

View full text Add to dashboard Cite

Carboxyl-functionalized multiwalled carbon nanotube (c-MWCNT) was used to enhance the properties of poly(butylene terephthalate)/polycarbonate (PBT/PC) blends by melt blending. The c-MWCNT inhibited transesterification reactions between PBT and PC. SEM result showed that most of the c-MWCNT dispersed in the PBT matrix and partial c-MWCNT lied between the interface of PBT and PC phases. c-MWCNT promoted the crystallization of PBT due to the decreased transesterification and the heterogeneous nucleating effect, which led to a 20 o C increase of the crystallization temperature. DMA test indicated that the miscibility between PBT and PC decreased with the c-MWCNT loading since the inhibited transesterification. When the c-MWCNT content was 4 wt%, the yield strength of 65.9 MPa and tensile modulus of 2116 MPa were achieved, which corresponded to 23.9 and 19.5% increase relative to the pure PBT/ PC blend. The conductivity and dielectric properties of PBT/PC were largely enhanced by the c-MWCNT. The σ d c values of PBT/PC improved greatly by several orders of magnitude from 10-1 8 to 10-7 when the c-MWCNT content was 2 wt%. The dielectric constant at 100 Hz for the nanocomposites increased from 2.8 to 146 when the c-MWCNT loading varied from 0.1 to 4 wt%, which improved more than 50 times.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enhanced Properties of PBT/PC Blends with the Addition of Carboxyl-functionalized Multiwalled Carbon Nanotube

Hu¹,

Song²,

Lv³

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Mixing polymer blends with carbon fillers such as carbon black (CB) and carbon nanotubes (CNTs) is a viable approach to prepare conductive polymeric materials . In most published work, the carbon fillers are selectively localized in one polymer phase or at the interface of blends displaying co‐continuous phase morphology.…”

Section: Introductionmentioning

confidence: 99%

“…When blends having sea‐island structure are involved, the electrical conductivity usually increases if the carbon filler is selectively localized in the continuous phase due to the increased effective concentration of the carbon filler . When the conductive filler is selectively localized in the dispersed phase, the composite material is usually non‐conductive unless the interparticle distance is small enough to allow tunneling effect to happen as a result of small particle size and big particle number …”

Section: Introductionmentioning

confidence: 99%

Preparation of conductive polyphenylene sulfide/polyamide 6/multiwalled carbon nanotube composites using the slow migration rate of multiwalled carbon nanotubes from polyphenylene sulfide to polyamide 6

Zhang

Xiong

et al. 2015

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

Conductive polyphenylene sulfide (PPS)/polyamide 6 (PA6)/multiwalled carbon nanotube (MWCNT) composites having 10-30 wt % PA6 and 1 wt % MWCNTs are prepared by melt mixing at 3008C for 8 min using a high concentration PPS/ MWCNT masterbatch approach, and the migration kinetics of MWCNTs from thermodynamically unfavored PPS to favored PA6 was investigated. The morphology of the composites was investigated by field emission scanning electron microscopy and transmission electron microscopy, showing the localization of most MWCNTs in the PPS phase and at the interface, being different from the case of direct melt mixing where non-conductive materials were obtained with most MWCNTs found in the PA6 phase and at the interface. The electrical resistivity and morphology of the materials as a function of time were investigated, showing that the conductive materials can be prepared within a mixing time of 4-16 min because of the slow migration rate of MWCNTs from PPS toward PA6, and MWCNTs can eventually migrate into the PA6 phase after a long mixing time of 30 min. The slow migration rate of MWCNTs was attributed to the high viscosity ratio of the two phases. This article shows a good example where the migration of MWCNTs was slow enough to control and can be used to prepare conductive polymer blends.

show abstract

“…in a polysulfone polymer matrix . Other articles demonstrated that properties like mechanical behavior or electrical conductivity are dependent on factors like purification (e.g., a variation in percolation threshold between 3 and 6 wt% for CNT in thermoplastic polyurethane was found) , strain induced crystallization , or blend composition of the polymer matrix . In all of these cases, the break‐up of CNT agglomerates and their uniform distribution were important issues.…”

Section: Introductionmentioning

confidence: 99%

Effective multifunctionality of poly(p‐phenylene sulfide) nanocomposites filled with different amounts of carbon nanotubes, graphite, and short carbon fibers

et al. 2013

View full text Add to dashboard Cite

The aim of this work was the fundamental research on multifunctional properties of poly(p‐phenylene sulfide) composites using commercially available multiwall carbon nanotubes (MWNT) in combination with micro‐scale short carbon fibers (SCF) and graphite as fillers. Systematic combinations of the three fillers were investigated to explore the efficiency of the respective single fillers in combined systems. It could be demonstrated that MWNT are the most effective filler for realizing electrical conductivity, whereas SCF are favorable to improve mechanical and tribological properties, and graphite is good for improving the tribological properties too. Multimodally filled composites resulted in the best overall property profile. Existing synergies between SCF and MWNT with regard to the electrical conductivity, especially near to the percolation threshold, were modeled using a modified mixture rule, based on the general effective media theory. POLYM. COMPOS., 34:1405–1412, 2013. © 2013 Society of Plastics Engineers

show abstract

Electrical conductivities of carbon nanotube-filled polycarbonate/polyester blends

Cited by 9 publications

References 28 publications

Enhanced Properties of PBT/PC Blends with the Addition of Carboxyl-functionalized Multiwalled Carbon Nanotube

Enhanced Properties of PBT/PC Blends with the Addition of Carboxyl-functionalized Multiwalled Carbon Nanotube

Preparation of conductive polyphenylene sulfide/polyamide 6/multiwalled carbon nanotube composites using the slow migration rate of multiwalled carbon nanotubes from polyphenylene sulfide to polyamide 6

Effective multifunctionality of poly(p‐phenylene sulfide) nanocomposites filled with different amounts of carbon nanotubes, graphite, and short carbon fibers

Contact Info

Product

Resources

About