Controllable synthesis of leaflet-like poly (3,4-ethylenedioxythiophene)/single-walled carbon nanotube composites with microwave absorbing property

Bai, Xiaoxia; Hu, Xie; Zhou, Shuyun; Li, Laifeng; Rohwerder, Michael

doi:10.1016/j.compscitech.2015.02.010

Cited by 18 publications

(9 citation statements)

References 56 publications

(67 reference statements)

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“…On the other hand, when the amount of MWCNT increases in composites (to 3 buckypapers), an increase of ε' can be observed (Figure 3). These results are in agreement with those previously reported in the literature 13,43,44 . GF/EP/BP/PF‐3 and GF/EP/BP/RPF‐3 laminates show large storage capacity (real component ε') in the range of 9.90 to 22.21 at X‐band, and from 4.71 to 16.23 at Ku‐band.…”

Section: Resultssupporting

confidence: 93%

“…These values are higher than those found for epoxy composites with 3 wt% of SWCNT 13 and poly (3,4-ethylenedioxythiophene) composites with 10 wt% of SWCNT. 43 The imaginary component of electrical permittivity varies from 4.15 to 26.10 at X-band, and from 2.13 to 20.10 at Ku-band. GF/EP/BP/PF-3 composite presented both large storage and energy loss capacity in both bands.…”

Section: Resultsmentioning

confidence: 99%

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Morphological, mechanical, and electromagnetic interference shielding effectiveness characteristics of glass fiber/epoxy resin/MWCNT buckypaper composites

Corredor

Santos

Botelho

et al. 2021

J of Applied Polymer Sci

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Glass fiber/epoxy resin composites (GF/EP) using one and three multi-walled carbon nanotube buckypapers (BP) were obtained and their complex parameters, reflectivity, and electromagnetic interference (EMI) shielding effectiveness (SE) at X-band (8.2-12.4 GHz) and Ku-band (12.4-18 GHz) were evaluated. The preparation of BP used polyacrylonitrile (PAN) nanofibers (PF These composites show both large storage and energy loss capacity in both bands revealing promising results related to EMI SE applications. Besides, a high attenuation of around 67% and 72% were achieved for BP based composites. The cross-section view of the buckypaper and the laminates was analyzed by scanning electron microscopy (SEM). The incorporation of the CNT film into the laminates showed no improvements in the elastic properties through dynamic mechanical analyses (DMA). Nevertheless, a decrease in the shear properties by the compression shear test (CST) and interlaminar shear strength (ILSS) has been observed. GF/EP/BP/PF composite presented a reduction of 29 and 39% in its ILSS properties compared to the base laminate (GF/EP). Also, the decrease was even more significant, revealing a steep reduction in its CST properties. On the other hand, the removal of the pan nanofiber (PF) led to better mechanical properties for GF/EP/BP/RPF composites. Results have shown ILSS values of 47.4 ± 2.2 MPa which are close to the base laminate (52.4 ± 3.1 MPa). The removal of the PF provided larger porous in the CNT network, making the impregnation by epoxy easier in the BP/RPF which resulted in improved shear properties compared to GF/EP/BP/PF samples. K E Y W O R D S composites, graphene, and fullerenes, mechanical properties, nanotubes, thermosets 1 | INTRODUCTION Nowadays, materials with properties of reflectivity and electromagnetic interference (EMI) shielding effectiveness (SE) have attracted intensive attention in aerospace, engineering, and telecommunication areas, all with civil and military applications. 1-6 Carbon nanomaterials such as carbon nanotubes (CNT), carbon nanofibers, graphite nanoplatelets, and carbon black 3,7-12 are good candidates for developing composites that attend the technological

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Section: Resultssupporting

confidence: 93%

Section: Resultsmentioning

confidence: 99%

Morphological, mechanical, and electromagnetic interference shielding effectiveness characteristics of glass fiber/epoxy resin/MWCNT buckypaper composites

Corredor

Santos

Botelho

et al. 2021

J of Applied Polymer Sci

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“…The first weight-loss step (less than 5 %) corresponds to the volatilization of solvents and/or absorbed moisture and oligomers of composites [ 35 ]. The second weight-loss step (170–203 to 436–462 °C) assigned partly to the weight loss of ethylenedioxyl in PEDOT, the oxygen-containing groups of Th-GO, and partly to thermal decomposition of composites matrix [ 38 ]. The third weight-loss step (436–462 to 800 °C) is ascribed to the weight loss of thermal decomposition of composites matrix [ 39 ].…”

Section: Resultsmentioning

confidence: 99%

Functionalization of Graphene Oxide and its Composite with Poly(3,4-ethylenedioxythiophene) as Electrode Material for Supercapacitors

et al. 2015

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In this study, poly(3,4-ethylenedioxythiophene)/thiophene-grafted graphene oxide (PEDOT/Th-GO) composites from covalently linking of Th-GO with PEDOT chains were prepared via in situ chemical polymerization with different weight percentage of Th-GO ranging between 40 and 70 % in reaction medium. The resulting composite materials were characterized using a various analytical techniques. The structural analysis showed that the composites displayed a higher degree of conjugation and thermal stability than pure PEDOT, and the weight percentage of Th-GO could affect the doping level, amount of undesired conjugated segments, and porous structure of composites. Electrochemical analysis suggested that the highest specific capacitance of 320 F g−1 at a current density of 1 A g−1 with good cycling stability (capacitance retention of 80 % at 1 A g−1 after 1000 cycles) was achieved for the composite prepared from 50 wt% Th-GO content in reaction medium.

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“…For example, when carbon black and carbon fiber are coated with a rational amount of PANI, their effective absorption for the incident EM waves will be sufficiently strengthened [ 131 , 132 ]. With the development of carbon science, various fine carbon materials (e.g., carbon nanotubes (CNTs) and graphene) appeared as promising MAMs and became popular carbon additives in CPs [ 133 , 134 , 135 , 136 , 137 , 138 , 139 , 140 , 141 , 142 , 143 , 144 , 145 , 146 , 147 ]. Sharma et al found that a PANI–CNTs composite film could provide higher values of dielectric constant and dielectric loss factor than pure PANI film because of the interaction of PANI molecular chains with the surface functionalities of the CNTs [ 133 ].…”

Section: Cp-based Composites As Mamsmentioning

confidence: 99%

“…As mentioned above, well-matched characteristic impedance and good reflection loss property can be also achieved by rational manipulation of absolute dielectric loss systems [ 120 , 121 , 122 , 123 , 124 , 125 , 126 , 127 , 128 , 129 , 130 , 131 , 132 , 133 , 134 , 135 , 136 , 137 , 138 , 139 , 140 , 141 , 142 , 143 , 144 , 145 , 146 , 147 ], and thus the third strategy for multi-compound CP-based composites is derived from the combination of various dielectric components. For instance, Sambyal et al blended PANI, barium strontium titanate, and expanded graphite into ternary composites with different weight ratios, and they found that the weight ratio could impact the microwave absorption of these composites greatly [ 173 ].…”

Section: Cp-based Composites As Mamsmentioning

confidence: 99%

Recent Advances in Conjugated Polymer-Based Microwave Absorbing Materials

Wang

et al. 2017

Polymers

113

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Microwave absorbing materials (MAMs) are paving the way for exciting applications in electromagnetic (EM) pollution precaution and national defense security, as they offer an advanced alternative to conventional reflection principles to fundamentally eliminate the EM waves. Conjugated polymer (CP)-based composites appear as a promising kind of MAM with the desirable features of low density and high performance. In this review, we introduce the theory of microwave absorption and summarize recent advances in the fabrication of CP-based MAMs, including rational design of the microstructure of pure conjugated polymers and tunable chemical integration with magnetic ferrites, magnetic metals, transition metal oxides, and carbon materials. The key point of enhancing microwave absorption in CP-based MAMs is to regulate their EM properties, improve matching of characteristic impedance, and create diversified loss mechanisms. The examples presented in this review will provide new insights into the design and preparation of CP-based composites that can satisfy the high demands of the oncoming generation of MAMs.

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Controllable synthesis of leaflet-like poly (3,4-ethylenedioxythiophene)/single-walled carbon nanotube composites with microwave absorbing property

Cited by 18 publications

References 56 publications

Morphological, mechanical, and electromagnetic interference shielding effectiveness characteristics of glass fiber/epoxy resin/MWCNT buckypaper composites

Morphological, mechanical, and electromagnetic interference shielding effectiveness characteristics of glass fiber/epoxy resin/MWCNT buckypaper composites

Functionalization of Graphene Oxide and its Composite with Poly(3,4-ethylenedioxythiophene) as Electrode Material for Supercapacitors

Recent Advances in Conjugated Polymer-Based Microwave Absorbing Materials

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