Effect of different doses of electron beam irradiation on the structure of PAN precursor fibers and resultant stabilized fibers

Yu, Haibin; Yuan, Huiwu; Wang, Yuansheng; Zheng, Wei; Xia, Geqing

doi:10.1007/s11595-013-0733-2

Cited by 7 publications

(2 citation statements)

References 16 publications

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“…The draw ratio adjusts the degree of lamellar orientation, and the temperature of the casting roll controls the crystallinity and lamellar thickness. In addition, heat treatment or adding a certain number of other polymers can also improve the orientation of the crystals [ 48 , 49 ]. By precisely controlling the casting and stretching parameters, it is possible to fine-tune the performance of the breathable microporous film to suit various applications.…”

Section: Preparation Of Breathable Membranesmentioning

confidence: 99%

Progress in the Preparation and Application of Breathable Membranes

Luo,

Farooq,

Weng

et al. 2024

Polymers

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Breathable membranes with micropores enable the transfer of gas molecules while blocking liquids and solids, and have a wide range of applications in medical, industrial, environmental, and energy fields. Breathability is highly influenced by the nature of a material, pore size, and pore structure. Preparation methods and the incorporation of functional materials are responsible for the variety of physical properties and applications of breathable membranes. In this review, the preparation methods of breathable membranes, including blown film extrusion, cast film extrusion, phase separation, and electrospinning, are discussed. According to the antibacterial, hydrophobic, thermal insulation, conductive, and adsorption properties, the application of breathable membranes in the fields of electronics, medicine, textiles, packaging, energy, and the environment are summarized. Perspectives on the development trends and challenges of breathable membranes are discussed.

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Section: Preparation Of Breathable Membranesmentioning

confidence: 99%

Progress in the Preparation and Application of Breathable Membranes

Luo,

Farooq,

Weng

et al. 2024

Polymers

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“…[ 27 ] Like them, other comprehensive studies on the irradiation induced changes in PAN were performed below the Tg of PAN. [ 28–33 ]…”

Section: Introductionmentioning

confidence: 99%

Influence of Temperature and Dose Rate of E‐Beam Modification on Electron‐Induced Changes in Polyacrylonitrile Fibers

Leopold

Müller

Zimmerer

et al. 2022

Macro Chemistry & Physics

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The present study investigates the influence of modification temperature and the dose rate of electron modification on the progress of these and the three important thermal induced reactions namely: cyclization, dehydrogenation, and oxidation. Since electron induced chemical reactions strongly depend on the polymer chain segment mobility, temperatures below the glass transition temperature (T g ) and above T g are tested. Electron paramagnetic resonance (EPR) spectroscopy measurements show the presence of alkyl-, peroxy-, and polyimineradicals alongside each other. Gel measurements identified a temperature dependent crosslinking behavior at doses ⩽ 150 kGy, but no dose rate depending on crosslinking. Changes in chemical structure are investigated using Fourier transform infrared spectroscopy (FT-IR), showing a dependency of stabilization behavior depending on dose and temperate more than on dose rate. Thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC) measurements complete the analyses by describing the behavior during further thermal treatments and measuring the residual mass at 800 °C.

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High‐Performance Carbon Fibers Prepared by Continuous Stabilization and Carbonization of Electron Beam‐Irradiated Textile Grade Polyacrylonitrile Fibers

König

Bauch

Herbert

et al. 2021

Macro Materials & Eng

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The manufacturing of high-performance carbon fibers (CFs) from low-cost textile grade poly(acrylonitrile) (PAN) homo-and copolymers using continuous electron beam (EB) irradiation, stabilization, and carbonization on a kilogram scale is reported. The resulting CFs have tensile strengths of up to 3.1 ± 0.6 GPa and Young's moduli of up to 212 ± 9 GPa, exceeding standard grade CFs such as Toray T300. Additionally, the Weibull strength and modulus, the microstructure, and the morphology of these CFs are determined.

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Effect of different doses of electron beam irradiation on the structure of PAN precursor fibers and resultant stabilized fibers

Cited by 7 publications

References 16 publications

Progress in the Preparation and Application of Breathable Membranes

Progress in the Preparation and Application of Breathable Membranes

Influence of Temperature and Dose Rate of E‐Beam Modification on Electron‐Induced Changes in Polyacrylonitrile Fibers

High‐Performance Carbon Fibers Prepared by Continuous Stabilization and Carbonization of Electron Beam‐Irradiated Textile Grade Polyacrylonitrile Fibers

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