## Abstract A new technique for the modification of PAN fibers has evolved, in which the starting precursor material is impregnated with an aliphatic carboxylic acid, as well as KMnO~4~. The bimodification of PAN, attempted by us for the first time, is aimed at achieving dual advantages in plastici
Modified polyacrylonitrile (PAN) fibers
✍ Scribed by Jadwiga Bucheńska
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 281 KB
- Volume
- 65
- Category
- Article
- ISSN
- 0021-8995
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✦ Synopsis
An effective two-stage method for obtaining polyacrylonitrile fibers with antibacterial properties has been developed. The method consists of the incorporation of carboxylic groups into fibers by PAA grafting polymerization followed by fiber impregnation with gentamycin, neomycin, or penicillin solutions. The modified fibers show effective biocide liberation into water and antibacterial activity towards Grampositive and Gram-negative microorganisms ( Staphylococuus aureus, Escherichia coli, and Pseudomonas aeruginosa ). The presence of antibiotics combined with the modified fibers though chemical bonds has been proved by IR and 1 H-NMR investigations.
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Fiber forming polyacrylonitriles (PAN) were modified by copolymerizing acrylonitrile monomer with methyl acrylate (MA) and 2-acrylamido-2-methyl propane sulfonic acid (AP), respectively, and blended with collulose acetate (CA). Fibers of MA-PAN, AP-PAN, and their blends with CA were wet-spun in dime
## Abstract Polyacrylonitrile based porous hollow gel fibers were prepared from PAN hollow fibers by oxidation and subsequent alkaline treatment. Fourier‐transform infrared (FTIR), X‐ray diffraction, and scanning electron microscope (SEM) analyses showed that the PAN porous hollow gel fiber was a k
## Abstract The authors determined conditions for manufacturing PAN precursor fibers containing a system of two nanoadditives, montmorillonite (MMT), and hydroxyapatite (HAp) in their structure. The PAN precursor fibers thus obtained are characterized by a tenacity of more than 30 cN/tex and a tota
Graphite fibers were developed from polyacrylonitrile (PAN) fibers which were modified with potassium permanganate. After the transitional temperature, the formation of graphite structures commenced, the crystals increased in thickness, and the preferred orientation of the fiber crystals increased.