Synergistic Effect of Amino-Functionalized Multiwalled Carbon Nanotube Incorporated Polyurethane Nanocomposites for High-Performance Smart Materials Applications

Ahmed, Naveed; Iftikhar, Faiza Jan; Farooq, Usman; Niaz, Basit; Nauman, Saad; Ahmed, Nisar; Dilbraiz, Muhammad Arsalan; Ahmed, Saad

doi:10.1007/s11665-022-06614-w

Cited by 8 publications

(11 citation statements)

References 49 publications

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“…With the disappearance of the force stimulus, the sensor recovers its deformation and the overlapped or connected parts between the conductive materials recover, leading to a decrease of resistance. The disconnection mechanism is the main factor causing resistance change under large strains . The third is the tunneling effect mechanism.…”

Section: Sensing Mechanisms and Preparation Methods Of Carbon-based Rsssmentioning

confidence: 99%

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Advances in Carbon-Based Resistance Strain Sensors

Wang

Liu

et al. 2023

ACS Appl. Electron. Mater.

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Carbon materials, such as CB, CNTs, graphene and CFs, have excellent conductivity, mechanical properties and chemical stability, and have been fully developed and applied in the field of smart wearable devices, especially the resistance strain sensors prepared from carbon materials. Although various feasible configurations of carbon-based resistance strain sensors have been proposed, challenges regarding material design, preparation methods, and low practicality still exist. This paper reviews the latest research progress of carbon-based resistance strain sensors from the perspective of preparation methods, and discusses the mechanical properties, effective sensing tensile range, sensitivities, and different application scenarios, and provides suggestions and prospects for producing carbon-based resistance strain sensors. Finally, the future challenges and favorable development opportunities in the field of carbon-based resistance strain sensors are summarized.

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Section: Sensing Mechanisms and Preparation Methods Of Carbon-based Rsssmentioning

confidence: 99%

“…The disconnection mechanism is the main factor causing resistance change under large strains. 72 The third is the tunneling effect mechanism. Microscopic particles such as electrons have the property of waves and can pass through the potential barrier within a specific distance range, forming a conductive path.…”

Section: Sensing Mechanismsmentioning

confidence: 99%

Advances in Carbon-Based Resistance Strain Sensors

Wang

Liu

et al. 2023

ACS Appl. Electron. Mater.

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“…Advanced carbon-based materials like carbon nanotubes, fullerenes, and graphene oxide are attractive inorganic materials for PEM fabrication. The advantages associated with carbon materials are as follows: (a) ability to form a thin film, (b) exceptional chemical and dimensional stabilities, (c) flexibility, low density, and phenomenal electrochemical activity, (d) excellent biocompatibility and outstanding chemical resistance, and (e) resistance in chemical structure compared to other porous materials in hydrolytic conditions .…”

Section: Strategy For Development Of Pemsmentioning

confidence: 99%

“…Multiwalled carbon nanotubes (MWCNTs) have recently become the ideal electrochemical materials due to their exceptional electrochemical activities, significant thermal and mechanical durabilities, and high flexibilities. , However, the use of CNT in PEM is limited for the following reasons: (a) Due to the strong van der Wall forces, it is difficult for CNT to be homogeneously distributed in the polymer matrix. (b) Due to the high electronic conductivity of CNT, an ionic channel is likely to form in PEM, which could result in short circuits in PEMFCs .…”

Section: Chitosan/inorganic Filler Composite Membranementioning

confidence: 99%

Review on Chitosan and Two-Dimensional MoS₂-Based Proton Exchange Membrane for Fuel Cell Application: Advances and Perspectives

et al. 2023

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Chitosan is a naturally occurring polysaccharide with abundant biomass resources that attracts interest due to its unique physicochemical properties. The importance of chitosan has risen recently (a) because it is a renewable and biodegradable material and (b) because it has the ability to form a membrane. Therefore, chitosan is highly preferable for green energy applications. This review describes the most recent advancements in chitosan chemistry, emphasizing elemental modifying reactions like sulfonation, phosphorylation, phthaloylation, and chemical cross-linking. However, the major issues of the chitosan (CS)-based polymer electrolyte membrane (PEM) are attaining high proton conductivity, leakage across fuel cells, and durability. To overcome the above-mentioned issues, chitosan and the emerging class of inorganic materials 2-D transition metal dichalcogenides especially MoS 2 can be employed for proton-exchange membrane fuel cell applications. Surface functionalization of MoS 2 can open new pathways for fabricating CS/MoS 2 composite membranes. Current research also focuses on the following issues: (a) strategies for the development of PEM, (b) properties and structures of chitosan for fuel cell applications, and (c) chitosan utilization in different parts of the fuel cell. The present study also discusses progress and particular challenges that chitosan-based proton exchange membranes face. Moreover, strategies to control those issues and future aspects are discussed in detail.

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“…and the appearance of a new peak around 3300 cm À1 for N H vibrations confirms the structure of the pre-designed PU polymer. [16][17][18] The absorption peak at 1075 cm À1 in Figure 3A is symmetric stretching vibrations of C O C linkage while the peak at 1504 and 1603 cm À1 attributes C N bending vibrations and H-bonded C O group, respectively. [19][20][21] The peak intensity at 1709 cm À1 represents the urethane-free carbonyl group while the peak at 2888 cm À1 shows aliphatic CH 2 group stretching frequency.…”

Section: Shape Memory Studymentioning

confidence: 99%

Mechanically robust and highly elastic thermally induced shape memory polyurethane based composites for smart and sustainable robotic applications

Ahmed

Niaz

Ahmed

et al. 2022

Polymers for Advanced Techs

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In the present study, polyurethane (PU) was prepared using a pre-polymer (two-shot) process with a novel phloroglucinol chain extender. PU nanocomposite was prepared by incorporating acid-FMWCNTs in pristine-PU. Polystyrene (PS) was functionalized with the nitro group through our previously reported method. The ternary blend composites (PU/PS-NO 2 /FMWNTs) were prepared using acid functionalized multiwall carbon nanotubes (FMWCNTs) for enhanced properties and selectivity. Nitrofunctionalized-PS/PU composite properties were compared with pristine-PU and its blend composite. The structure of the pre-designed PU polymer and its composites were confirmed by the FTIR and the degree of crystallinity and amorphous state was determined with XRD analysis. Excellent thermal stabilities were confirmed through a TGA thermogram with an increase in the loading amount of FMWCNTs. Excellent tensile strength 59.2 ± 2.6 MPa with 0.1 g loading amount of FMWCNTs with enhanced flexibilities was achieved. The significant change in surface morphologies and porosity suggested enhanced interaction (physical and chain entanglement) of FMWCNTs and nitrated-PS with PU chain as the loading amount of filler increased.The resulted porous spongy cluster (as seen in SEM images) provides efficient shape recovery strain with excellent flexibility to the composite material without compromising repeatability. Almost 100% shape recovery was observed for all samples with repeated recoveries. The recovery time of PU nanocomposite observed is shorter than neat polyurethane and PU/PS-NO 2 blends because of their better conductive nature but causes brittleness, which can easily initiate a crack in the sample compared to a blended sample.

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Synergistic Effect of Amino-Functionalized Multiwalled Carbon Nanotube Incorporated Polyurethane Nanocomposites for High-Performance Smart Materials Applications

Cited by 8 publications

References 49 publications

Advances in Carbon-Based Resistance Strain Sensors

Advances in Carbon-Based Resistance Strain Sensors

Review on Chitosan and Two-Dimensional MoS₂-Based Proton Exchange Membrane for Fuel Cell Application: Advances and Perspectives

Mechanically robust and highly elastic thermally induced shape memory polyurethane based composites for smart and sustainable robotic applications

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Synergistic Effect of Amino-Functionalized Multiwalled Carbon Nanotube Incorporated Polyurethane Nanocomposites for High-Performance Smart Materials Applications

Cited by 8 publications

References 49 publications

Advances in Carbon-Based Resistance Strain Sensors

Advances in Carbon-Based Resistance Strain Sensors

Review on Chitosan and Two-Dimensional MoS2-Based Proton Exchange Membrane for Fuel Cell Application: Advances and Perspectives

Mechanically robust and highly elastic thermally induced shape memory polyurethane based composites for smart and sustainable robotic applications

Contact Info

Product

Resources

About

Review on Chitosan and Two-Dimensional MoS₂-Based Proton Exchange Membrane for Fuel Cell Application: Advances and Perspectives