The Structure and Properties of Polyacrylonitrile Nascent Composite Fibers with Grafted Multi Walled Carbon Nanotubes Prepared by Wet Spinning Method

Zhang, Hailong; Quan, Ling; Gao, Aijun; Tong, Yuping; Shi, Fanghui

doi:10.3390/polym11030422

Cited by 23 publications

(12 citation statements)

References 33 publications

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“…The Raman spectrum obtained from the PAN nanofiber mat exhibited two peaks at 1454 and 1077 cm −1 that were assigned to the bending vibrations of C−H groups. 36,37 The Raman spectrum of the Cu microfiber mat was consistent with that of the previously reported bare Cu, which has a broad peak between 1500 and 2500 cm −1 . 38 The peaks appearing between 0 and 750 cm −1 associated with the oxidation of Cu are not shown.…”

Section: Resultssupporting

confidence: 87%

Reusable Filters Augmented with Heating Microfibers for Antibacterial and Antiviral Sterilization

Kim

et al. 2020

ACS Appl. Mater. Interfaces

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Numerous threats to human health and ecosystems on earth exist due to air pollution and the spread of fatal diseases. Airborne pollutants and particulate matter (PM) pose serious public health risks. In addition, the emergence and spread of bacterial and viral diseases constantly threaten public health and safety. Although various approaches have been implemented thus far to protect humans from air pollution and exposure to diseases, several challenges remain to be addressed. In this study, we developed a hybrid air filter consisting of filtration, heating, and thermal insulation layers. The air filtration layer can effectively capture airborne PM1 particles (less than 1.0 μm in diameter). Furthermore, the heating layer enables the hybrid air filter to generate temperatures above 100 °C, and the insulation layer prevents the heat from being transferred to the other side (e.g., the human skin, if the hybrid air filter is used in a facemask). Since several bacteria and viruses are incapacitated under high temperatures, this hybrid air filter holds great promise for antibacterial and antiviral protection.

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Section: Resultssupporting

confidence: 87%

Reusable Filters Augmented with Heating Microfibers for Antibacterial and Antiviral Sterilization

Kim

et al. 2020

ACS Appl. Mater. Interfaces

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“…Among various polymer fiber fabrication techniques, wet spinning and electrospinning have been the most frequently applied methods in the recent years [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. Known as a primary method, wet spinning has been employed to prepare a significant majority of PAN fibers [23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Development of Porous Polyacrylonitrile Composite Fibers: New Precursor Fibers with High Thermal Stability

Samimi-Sohrforozani

Azimi

Abolhasani

et al. 2021

Electronic Materials

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Polyacrylonitrile (PAN) fibers with unique properties are becoming increasingly important as precursors for the fabrication of carbon fibers. Here, we suggest the preparation of porous PAN composite fibers to increase the homogeneity and thermal stability of the fibers. Based on the thermodynamics of polymer solutions, the ternary phase diagram of the PAN/H2O/Dimethylformamide (DMF) system has been modeled to introduce porosity in the fibers. Adding a conscious amount of water (4.1 wt.%) as a non-solvent to the PAN solution containing 1 wt.% of graphene oxide (GO), followed by wet spinning, has led to the preparation of porous composite fibers with high thermal stability and unique physicochemical properties. Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) results elucidate that PAN/GO/H2O porous composite fibers have a higher thermal decomposition temperature, increased residual weight, reduced heat release rate, and higher crystallinity in comparison with the pristine PAN fibers, being a promising precursor for the development of high-performance carbon fibers. The results show a promising application window of the synthesized PAN fibers in electronic and electrochemical devices.

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“…Accordingly, research on conductive yarn based on spinning processes such as dry-jet spinning and wet spinning is steadily progressing by manufacturing a conductive nanofiller/polymer composite solution incorporating carbon nanofiller and metal nanowires in the polymer [3,6,7]. In particular, research on wet spinning for a carbon nanomaterial/polymer composite solution is in progress [8][9][10][11][12][13][14][15]. It is common to spinning a PAN polymer through wet spinning and does not require heat during the process.…”

Section: Introductionmentioning

confidence: 99%

“…Polyacrylonitrile (PAN) is one of the most important polymers for preparing high-performance carbon fibers. Recently, carbon nanomaterial/PAN composite fibers with improved mechanical properties from the carbon fibers have been produced [8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Process Optimization for Manufacturing PAN-Based Conductive Yarn with Carbon Nanomaterials through Wet Spinning

et al. 2021

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This study aimed to manufacture PAN-based conductive yarn using a wet-spinning process. Two types of carbon nanomaterials, multiwall carbon nanotubes (MWCNT) and carbon nanofiber (CNF), were used alone or in a mixture. First, to derive the optimal composite solution condition for the wet spinning process, a composite solution was prepared with carbon nanomaterials of the same total mass weight (%) and three types of mechanical stirring were performed: mechanical stirring, ultra-sonication, and ball milling. A ball milling process was finally selected by analyzing the viscosity. Based on the above results, 8, 16, 24, and 32 wt% carbon nanomaterial/PAN composite solutions were prepared to produce wet spinning-based composite films before preparing a conductive yarn, and their physical and electrical properties were examined. By measuring the viscosity of the composite solution and the surface resistance of the composite film according to the type and content of carbon nanomaterials, a suitable range of viscosity was found from 103 cP to 105 cP, and the electrical percolation threshold was from 16 wt% carbon nanomaterial/PAN, which showed a surface resistance of 106 Ω/sq or less. Wet spinning was possible with a PAN-based composite solution with a high content of carbon nanomaterials. The crystallinity, crystal orientation, tenacity, and thermal properties were improved when CNF was added up to 24 wt%. On the other hand, the properties deteriorated when CNTs were added alone due to aggregation. Mixing CNT and CNF resulted in poorer properties than with CNF alone, but superior properties to CNT alone. In particular, the electrical properties after incorporating 8 wt% CNT/16 wt% CNF into the PAN, 106 Ω/cm was similar to the PAN-based conductive yarn containing 32 wt% CNF. Therefore, this yarn is expected to be applicable to various smart textiles and wearable devices because of its improved physical properties such as strength and conductivity.

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The Structure and Properties of Polyacrylonitrile Nascent Composite Fibers with Grafted Multi Walled Carbon Nanotubes Prepared by Wet Spinning Method

Cited by 23 publications

References 33 publications

Reusable Filters Augmented with Heating Microfibers for Antibacterial and Antiviral Sterilization

Reusable Filters Augmented with Heating Microfibers for Antibacterial and Antiviral Sterilization

Development of Porous Polyacrylonitrile Composite Fibers: New Precursor Fibers with High Thermal Stability

Process Optimization for Manufacturing PAN-Based Conductive Yarn with Carbon Nanomaterials through Wet Spinning

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