Comparative Study on the Structure and Properties of Japanese and Self-Made Precursors

Abstract:

In order to release the important information on the structural constitution of Japanese precursor, comparative study on structure and properties of Japanese and self-made precursors were carried out by X-ray Diffraction (XRD), infrared spectrometer (FTIR), element content analysis and the breaking tenacity. It was found that Japanese precursor contains cyano group (–CN) and may contain styrene sulfonic acid amine, while not containing the carboxyl and ester carbonyl, that is, not containing MA. The XRD pattern of Japanese precursor around 10° appears a new crystalline diffraction peak, and the crystal size becomes lower. The cross-sectional shapes of Japanese precursor are circle, with uniform and compact structure, thus its mechanical properties is superior.

• Periodical: Advanced Materials Research (Volumes 317-319)
• Pages: 292-296
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.317-319.292
• Online since: August 2011
• Authors: Bao Hua Ji
• Keywords: Crystallinity, Element Content, Infrared Spectrometer, Mechanical Property, PAN Precursor

References

[1] MZ Wang. Preparation, properties and application of carbon fibers, Science Press, Beijing 1984.

[2] P. Bajaj, D. K. Paliwal, Structure development during dry-jet-wet spinning of acrylonitrile/vinyl acids and acrylonitrile/methyl acrylate copolymers, J. Appli. Polym. Sci., 86 (2002), 773

DOI: 10.1002/app.10973

[3] C.K. Liu,J. A. Cuculo, B. Smith, Coagulation studies for cellulose in the ammonia/ammonium thiocyanate direct solvent system, J. Polym. Sci.: Part B: Polymer Physics, 27(1989),2493

DOI: 10.1002/polb.1989.090271208

[4] FZ Ren,CX Lv,F He, Effect of amination on the structure of as-spun fibers, New Carbon Mater.,19(2004),268

[5] C. E. Moss, M. F. Butler, Microfocus Small-Angle X-ray Scattering Investigation of the Skin–Core Microstructure of Lyocell Cellulose Fibers, J. Appli. Polym. Sci., 83(2004),2799

DOI: 10.1002/app.10256

[6] YG Lv,CL Yang,L Zhai, Study on the coagulation process with weighing method, New Carbon Mater.,19(2004),16

[7] G. Prasad, Wet spinning of acrylic fiber and effects of spinning variables on fiber formation, Synthetic Fibers, 1(1985) 6-15

[8] JW Gao, FS Zhang, QY Zhang, BX Wu, Polymer Material Modern Testing Technology, Beijing Aerospace University Press, Beijing (1994)

[9] Liu, W. Ruland, X-ray studies on structure of polyacrylonitrile fibers, Macromole 26 (1993), 3030

[10] Rachel J. H, Crystalline structure of atactic poly(acrylonitrile), Macromole, 26 (1993), 6903

[11] F He, Carbon Fibers and its application, Chemical Industry Press, Beijing, (2004)