Surface-tunable, electrically conductive and inexpensive graphene platelets and their hydrophilic polymer nanocomposites

Wang, Ruoyu; Aakyiir, Mathias; Qiu, Aidong; Oh, Jeong-A; Adu, Philip Clinton Offei; Meng, Qingshi; Ma, Jun

doi:10.1016/j.polymer.2020.122851

Cited by 15 publications

(13 citation statements)

References 27 publications

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“…Various reported values of DC conductivity in PVA based composite systems are represented in Table 2. In comparison with the earlier reported values for PVA based systems, 5,26,28,32,37,43,44 we have obtained one of the highest values of electrical conductivity reported in PVA–GnP systems. In addition, an increase in DC electrical conductivity of 9 orders of magnitude is obtained with the addition of 12.5% GnP.…”

Section: Resultssupporting

confidence: 52%

“…Polymer based composites are such engineering materials which have a plethora of application ranging from automobiles, aircraft, medicine, and supercapacitors. Recently, there has been an increasing drive towards the development of conductive polymer matrix, which could be used in a wide range of relevant technological applications, such as sensor, 1 antistatic, 2 microwave absorbing, 3 and conductive coating 4,5 . Among the various composites, carbon‐based fillers such as carbon black, 6 graphite, 7,8 graphene oxide (GO), 9 carbon nanotube (CNT), 10–12 and graphene 13 are particularly studied due to its high electrical conductivity, thermal stability, mechanical strength, and ease of processing.…”

Section: Introductionmentioning

confidence: 99%

“…The large interfacial area leads to an improvement in mechanical and physical properties 14 . Thus, it becomes easy to manipulate electrical, 5,15 mechanical, 12,13 and thermal properties 12,16 by the addition of suitable fillers to polymer matrix. The introduction of conducting nanofillers to polymer (even insulating) leads to the development of highly conducting polymer nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

“…Among the various conducting fillers, graphite nanoplatelets 17 (GnPs) are especially desirable due to high electrical conductivity, strong interaction with polymer matrix and excellent mechanical properties. GnP consists of small stacks of graphene of 1–15 nm thickness based on the method of preparation and it is widely considered to be a good material for preparing conductive polymer composites 5 . It can improve the properties of composites such as electrical conductivity, 5,18 thermal conductivity, 19 stiffness, 20 and tensile strength 19,21 …”

Section: Introductionmentioning

confidence: 99%

“…There are a couple of works on PVA based carbon nanofiller composite 13,25–28 . However, there are very fewer reports on PVA–GnP based polymer composites 5,29 …”

Section: Introductionmentioning

confidence: 99%

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Enhanced electrical conductivity and structural, mechanical characterization of standalone poly(vinyl alcohol)‐graphite nanoplatelets composite films

Janeesh

Meera

Shalom

et al. 2020

J of Applied Polymer Sci

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Polymer based nanocomposites are gaining attention in various fields of science and technology due to its tunable properties. In this work, we report for the first time, the preparation and study on electrical and mechanical properties of standalone poly(vinyl alcohol) (PVA) based graphite nanoplatelet (GnP) composite films using modified film casting technique. Our modified tape casting method can produce films with uniform thickness, and uniform dispersion of filler deprived of pinholes. This technique is scalable for the mass production of polymer composite films for device application. We have obtained a significant enhancement in the electrical conductivity of 9 orders of magnitude and a maximum value of 0.143 S/m using PVA-GnP composites. To the best of our knowledge, this increase is the highest among the reported values for PVA-GnP composite films. However, a reduction in crystallinity and tensile strength can be seen with the addition of GnP fillers. The maximum tensile strength obtained for PVA-GnP composite films was 15 MPa and is adequate for use in electronic applications and devices. The effect of filler addition in PVA is discussed in detail.

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Section: Resultssupporting

confidence: 52%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…There are a couple of works on PVA based carbon nanofiller composite 13,25–28 . However, there are very fewer reports on PVA–GnP based polymer composites 5,29 …”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Enhanced electrical conductivity and structural, mechanical characterization of standalone poly(vinyl alcohol)‐graphite nanoplatelets composite films

Janeesh

Meera

Shalom

et al. 2020

J of Applied Polymer Sci

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Thermal, mechanical, thermo‐mechanical and morphological properties of graphene nanoplatelets reinforced green epoxy nanocomposites

Yusuf,

Sapuan,

Rashid

et al. 2023

Polymer Composites

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The efficient inclusion of GNPs (graphene nanoplatelets) as an effective nano‐fillers for green polymer matrices produced with 28% of carbon originating from biomass tends to significantly improve mechanical and thermal properties. In the present work, green epoxy nanocomposites with low loading of (0.1, 0.25, and 0.5) wt% of the GNPs were made using a solution blending technique using acetone as the solvent. In mechanical stirring, the ultrasonic bath was used to ensure the efficient dispersion of GNPs within green epoxy. The resulting nanocomposites were comprehensively characterized and compared to unfilled green epoxy. Different tools were used to appraise morphological, thermal, thermo‐mechanical, and mechanical behavior. The results confirmed through FE‐SEM showed an optimal dispersion of GNPs with nanocomposites. The thermal degradation temperature (Td) of GNPs curve with 0.25 wt% loading was shifted toward higher temperature (from 336°C to 342°C) due to low percentage of loading of GNPs which showed an enhance thermal stability of polymer matrix with 0.25 wt% loading. The mechanical results were also in lined with previously published literature, in the tensile test 6.45% and hardness 13.3% increment was achieved. Overall, the results underscored significant improvements in green nanocomposite performance with low wt% of GNPs.Highlights The study focuses on development and characterization of green epoxy nanocomposites, which utilize environmentally friendly materials as a matrix, highlighting the significance of sustainability. The study explores effects of low loading of GNPs in green epoxy nanocomposites. The results demonstrate significant improvements in mechanical and thermal properties with optimized presence of GNPs. This investigation provides insights into optimal amount of GNPs required to achieve improved properties. Research evaluates multifaceted analysis provides a holistic understanding of performance enhancements achieved through inclusion of GNPs.

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Study on the exfoliation mechanism of graphene nanoplatelets in the polypropylene/graphene nanoplatelets composites under the elongational flow generated by convergent-divergent channels

Deng

Lai

et al. 2022

J Mater Sci

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Surface-tunable, electrically conductive and inexpensive graphene platelets and their hydrophilic polymer nanocomposites

Cited by 15 publications

References 27 publications

Enhanced electrical conductivity and structural, mechanical characterization of standalone poly(vinyl alcohol)‐graphite nanoplatelets composite films

Enhanced electrical conductivity and structural, mechanical characterization of standalone poly(vinyl alcohol)‐graphite nanoplatelets composite films

Thermal, mechanical, thermo‐mechanical and morphological properties of graphene nanoplatelets reinforced green epoxy nanocomposites

Study on the exfoliation mechanism of graphene nanoplatelets in the polypropylene/graphene nanoplatelets composites under the elongational flow generated by convergent-divergent channels

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