Abstract
The effect of molecular weight on the structure and properties of PAN precursor was studied by the combination of scanning electron microscopy (SEM), X-ray diffraction (XRD) and differential scanning calorimetry (DSC), etc. With the molecular weight increasing, the grooves on the surface become deeper and rougher, the interlayer spacing and crystallite size increase, and the exothermic reaction occurred later. The strength and breaking extension of PAN precursors increase gradually with the molecular weight increasing. The effect of molecular weight is greater than the effect of surface defects on strength for PAN precursor of high molecular weight.
Publisher
Trans Tech Publications, Ltd.
Reference8 articles.
1. P. Bajaj: Bull. Mater. Sci. Vol. 18 (1995), p.711.
2. S. Kimura, T. Kato, T. Hyodo, Y. Shimizu and M. Egashira: J. Magn. Magn. Mater. Vol. 312 (2007), p.181.
3. C.W. Qiang, J.C. Xu, Z.Q. Zhang, L.L. Tian, S.T. Xiao, Y. Liu, P. J. Xu: Alloys. Compd. Vol. 506 (2010), p.93.
4. Y. Liu, Z.Q. Zhang, S.T. Xiao, C.W. Qiang, L.L. Tian, J.C. Xu: Appl. Surf. Sci. Vol. 25 (2011), p.7678.
5. O.P. Bahl, Z. Shen, J.G. Lavin, R. A. Ross, in: Manufacture of carbon fibers, edtied by J.B. Donnet , Marcel Dekker, NY(1998), in press.
Cited by
9 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献