نتایج جستجو برای: polyacrylonitrile pan

تعداد نتایج: 28817  

2017
Yanhua Song Zhaoyang Sun Lan Xu Zhongbiao Shao Wei Min Huang

Abstract: In the electrospinning process, a modified parallel electrode method (MPEM), conducted by placing a positively charged ring between the needle and the parallel electrode collector, was used to fabricate highly aligned carbon nanotubes/polyacrylonitrile (CNTs/PAN) composite nanofibers. Characterizations of the samples—such as morphology, the degree of alignment, and mechanical and cond...

Journal: :Autex Research Journal 2022

Abstract Reinforcement of fibers was carried out by adding carbon black (CB), and hydroxylated carboxylated nanotubes (CNTs) into electrospinning solution containing doped polyaniline (CSA-PANI) polyacrylonitrile (PAN). CB/CSA-PANI/PAN CNT/CSA-PANI/PAN electrospun nanofiber composite membrane formed in high-voltage electric field. The CSA-PANI/CB/PAN fiber found to be more brittle than the MWCN...

Journal: :Textiles 2022

In this research, we focused on testing the physical and mechanical properties of developed polyacrylonitrile (PAN) composite nanofibers with succinite (Baltic amber) SiO2 particles using standard methods nanofiber (physical properties). Polyacrylonitrile (based electrospinning method) were coated an aluminum substrate for structural investigation. SEM was used to determine average fiber diamet...

Journal: :journal of petroleum science and technology 0
mousa pakzad zanjan university ali ramezani faculty of science, university of zanjan, zanjan, iran mojtaba abbasian payame noor university

cellulose was modified by polystyrene (ps) and polyacrylonitrile (pan) via free radical and living radical polymerization, and then cellulose was used as the matrix in the preparation of polymer/clay nanocomposite, through a solution intercalation method. for this purpose, first, the graft polymerization of styrene (st) onto cellulose fibers was performed by using suspension polymerization and ...

Journal: :Materials today communications 2022

Presented here is an investigation into the successful wet spinning and carbonization of a low-cost textile grade (TG-PAN) polyacrylonitrile (PAN) polymer blended with more traditional carbon fiber (CF-PAN) precursor. Both were performed using continuous pilot scale facilities directly analogous to larger industrial processes which provide validation for further scale-up. The precursor fibers (...

Polyacrylonitrile (PAN) membranes with nano-porous surface and high hydrophilicity were fabricated by addition of polyoxyethylene (40) nonylphenyl ether (IGEPAL) as an additive in the casting solution. The membranes were prepared from PAN/IGEPAL/1-Methyl-2-pyrrolidone (NMP) via phase inversion induced by immersion precipitation technique. Pure water was used as coagulation medium. The effects o...

Journal: :Physical chemistry chemical physics : PCCP 2015
Xiang Li Aiwen Qin Xinzhen Zhao Dapeng Liu Haiye Wang Chunju He

Drawing to change the structural properties and cyclization behaviors of the polyacrylonitrile (PAN) chains in crystalline and amorphous regions is carried out on PAN and PAN/carbon nanotube (CNT) composite fibers. Various characterization methods including Fourier transform infrared spectroscopy, differential scanning calorimetry, X-ray diffraction and thermal gravimetric analysis are used to ...

Polyacrylonitrile (PAN) membranes with nano-porous surface and high hydrophilicity were fabricated by addition of polyoxyethylene (40) nonylphenyl ether (IGEPAL) as an additive in the casting solution. The membranes were prepared from PAN/IGEPAL/1-Methyl-2-pyrrolidone (NMP) via phase inversion induced by immersion precipitation technique. Pure water was used as coagulation medium. The effects o...

2012
Abdullah Alamri Mohamed H El-Newehy Salem S Al-Deyab

UNLABELLED BACKGROUND The design and applications of antimicrobial polymers is a growing field. Antimicrobial polymers can help to solve the problems associated with the use of conventional antimicrobial agents. Polymers with active functional groups can act as a carrier system for antimicrobial agents. In our study, we aim to prepare and develop some antimicrobial polymers for biomedical ap...

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