Preparation and characterization of graphite composites of polyaniline

Özerol, Esma Ahlatcıoğlu; Şenkal, Bahire Filiz; Okutan, Mustafa

doi:10.1016/j.mee.2015.03.062

Cited by 31 publications

(6 citation statements)

References 19 publications

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“…This is attributed to electron-donating properties of PANI, which are efficiently complemented by the electron-accepting nature of graphite. [31] The increase in PANI concentration correlates with larger resistivity changes, likely due to more active sites on the graphite surface being occupied. This facilitates more efficient NiO/CBNPs −0.11 [43] CNT/PEDOT:PSS −0.31 [44] CNT/PET −0.67 [45] Gr/PVDF/PANI −0.832 This work carrier transfer and results in a higher electron count at the same temperature.…”

Section: Electrical Properties Of the Temperature Sensormentioning

confidence: 99%

Sweat and Deformation‐Resistance Graphite/PVDF/PANI‐Based Temperature Sensor for Real‐Time Body Temperature Monitoring

Zhang,

Wei,

et al. 2024

Adv Materials Technologies

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Body temperature is critical indicator of human health, and its real‐time monitoring is crucial for assessing body status and disease diagnosis. In this work, a flexible temperature sensor is presented that employs a graphite/polyvinylidene fluoride (PVDF)/polyaniline composite and demonstrates a negative temperature coefficient (NTC). This sensor exhibits high sensitivity (−0.832%/ °C), rapid response time (11.05 s), and excellent linearity (R2 = 0.98). Its integration with a self‐adhesion PDMS‐PEG substrate layer ensures close skin contact, enhancing the accuracy of temperature measurements. Notably, the sensor's stability and resistance to sweat and deformation ensure continuous, reliable temperature monitoring, even during extensive exercise. This sensor thus represents a significant advancement in flexible and waterproof temperature sensing technologies.

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Section: Electrical Properties Of the Temperature Sensormentioning

confidence: 99%

Sweat and Deformation‐Resistance Graphite/PVDF/PANI‐Based Temperature Sensor for Real‐Time Body Temperature Monitoring

Zhang,

Wei,

et al. 2024

Adv Materials Technologies

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“…In addition, they exhibit high thermal and electrical conductivity. Among all the carbon materials, graphite stands out, as it has the desirable tribological characteristics while it is relatively more affordable [19]. The impact of different weight fractions of graphite (high loading 1 up to 5 wt.%) on the tribological behavior of glass fiber-reinforced polyamide composites was investigated [20].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Mechanical and Tribological Behavior of Epoxy-Based Hybrid Composite

Albahkali,

Fouly,

Alnaser

et al. 2023

Polymers

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The main target of this study is to evaluate the impact of hybrid reinforcement using Al2O3 nanoparticles and graphite on the epoxy nanocomposites’ mechanical and tribological properties. Various weight fractions of the reinforcement materials, ranging from 0 to 0.5 wt.%, were incorporated into the epoxy. The aim is to enhance the characteristics and durability of the polymers for potential utilization in different mechanical applications. The addition of hybrid additives consisting of Al2O3 nanoparticles and graphite to the epoxy resin had a noticeable effect on the performance of the epoxy nanocomposites. The incorporation of these additives resulted in increased elasticity, strength, toughness, ductility, and hardness as the concentration of reinforcement increased. The enhancement in the stiffness, mechanical strength, toughness and ductility reached 33.9%, 25.97%, 25.3% and 16.7%, respectively. Furthermore, the frictional tests demonstrated a notable decrease in both the coefficient of friction and wear with the rise of the additives’ weight fraction. This improvement in the structural integrity of the epoxy nanocomposites led to enhanced mechanical properties and wear resistance. The SEM was utilized to assess the surfaces of tested samples and provide insights into the wear mechanism.

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“…In fact, the different types of fibers have dissimilar diameters, which can lead to a significant gap between the fiber and matrix, resulting in some limitations and weaknesses of hybrid composite. To reduce the air gap, sufficient fillers (i.e., graphite filler and micro balloon) can be added in the matrix, enhancing the higher mechanical properties [ 18 , 19 , 20 , 21 ]. Megahed et al [ 22 ] investigated the addition of a graphite filler to carbon fiber/epoxy composites and glass fiber/epoxy composites, which are referred as hybrid composites.…”

Section: Introductionmentioning

confidence: 99%

Comparative Manufacturing of Hybrid Composites with Waste Graphite Fillers for UAVs

2022

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Materials of Unmanned Aerial Vehicles (UAVs) parts require specific techniques and processes to provide high standard quality, sufficiently strong, and lightweight materials. Composite materials with a proper technique have been considered to improve the performance of UAVs. Usually, the hybrid composite is developed by mechanical properties with the addition of the filler component (i.e., particle) in a matrix. This research work aims to develop the effective composite materials with better mechanical properties. Considering the manufacturing of hybrid composite materials, the vacuum process is an affecting factor on mechanical properties. The comparison of the hand lay-up process (HL) and vacuum infusion process (VI) with controlled pressure and temperature are studied in this research. In addition, graphite fillers (i.e., 5 wt%, 7.5 wt%, 10 wt%, and 12.5 wt%) are added to the studied matrix. Obviously, the ply orientation is one of the factors that affects mechanical properties. Moreover, two types of ply orientation (i.e., [0°/90°]4s and [−45°/45°]4s) are comprehensively investigated to improve mechanical properties in the three-point bending test. The experimental results show that the vacuum infusion process of ply orientation [0°/90°]4s with the addition of 10 wt% graphite filler exhibits remarkable flexural strength from 404 MPa (without filler) to 529 MPa (10 wt% filler). Especially, the ply orientation of [0°/90°]4s has higher flexural strength than [−45°/45°]4s in both processes. Considering the failure, the fracture of the specimen propagates along the trajectory of fiber fabric orientation, leading to the breakage. Subsequently, the flexural strength under the vacuum infusion process is more significant than in the hand lay-up process. Effectively, it is found that the hybrid composite in this manufacturing has a higher strength-to-weight ratio to use in the structure of UAV instead of pure aluminum. It should be noted that the proposed hybrid composite strategy used in this study is not only limited to the UAV parts. The contribution can be extended to use in other applications such as automotive, structural building, and so on.

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Preparation and characterization of graphite composites of polyaniline

Cited by 31 publications

References 19 publications

Sweat and Deformation‐Resistance Graphite/PVDF/PANI‐Based Temperature Sensor for Real‐Time Body Temperature Monitoring

Sweat and Deformation‐Resistance Graphite/PVDF/PANI‐Based Temperature Sensor for Real‐Time Body Temperature Monitoring

Investigation of the Mechanical and Tribological Behavior of Epoxy-Based Hybrid Composite

Comparative Manufacturing of Hybrid Composites with Waste Graphite Fillers for UAVs

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