caa a22 4500 46322289X CHVBK 20180405153218.0 cr unu---uuuuu 170326e20070301xx s 000 0 eng 10.1007/s10853-006-1213-2 doi (NATIONALLICENCE)springer-10.1007/s10853-006-1213-2 Carbonization behavior of l -tryptophan and gluten [Elektronische Daten] [Goro Nishikawa, Masatoshi Shioya, Norio Iwashita, Yutaka Kawahara] Abstracts: Carbonization behavior of l-tryptophan and gluten has been investigated in comparison with that of acenaphthylene using CHN elemental analysis, wide angle X-ray diffractometry, laser Raman spectroscopy and polarizing light microscopy. The carbon derived from l-tryptophan by the heat-treatment at 3,000°C showed almost the same degree of graphitization as that from acenaphthylene and the average interlayer spacings of both these carbons approached to 0.3354nm. The average interlayer spacing of the carbon from gluten, on the other hand, did not approach to this value at 3,000°C. The crystallites in the carbon from l-tryptophan were smaller than those in the carbon from acenaphthylene but larger than those in the carbon from gluten. The ratio, R, of the intensity of the Raman band at 1,360cm−1 against that at 1,580cm−1 and the half width, Δλ, of the Raman band at 1,580cm−1 were measured. The R and Δλ are the measures for the degree of graphitization. Those values for the carbon from l-tryptophan were nearly equal to those for the carbon from acenaphthylene and smaller than those for the carbon from gluten. The thin film of l-tryptophan heat-treated at 500°C for 2h showed a texture consisting of a fine mosaic mesophase structure and an anisotropic flow-type texture of mesophase. Springer Science+Business Media, LLC, 2006 Nishikawa Goro Advanced-Fibro Science, Kyoto Institute of Technology, 606-8585, Matsugasaki, Sakyo-ku, Kyoto, Japan aut Shioya Masatoshi Deptarment of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1, O-okayama, Meguro-ku, 152-8552, Tokyo, Japan aut Iwashita Norio National Institute of Advanced Industrial Science and Technology, 16-1, Onokawa, Tsukuba, 305-8569, Ibaragi, Japan aut Kawahara Yutaka Department of Biological & Chemical Engineering, Gunma University, 1-5-1, Tenjin-cho, 376-8515, Gunma, Kiryu, Japan aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/6(2007-03-01), 2076-2080 0022-2461 42:6<2076 2007 42 10853 https://doi.org/10.1007/s10853-006-1213-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-1213-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nishikawa Goro Advanced-Fibro Science, Kyoto Institute of Technology, 606-8585, Matsugasaki, Sakyo-ku, Kyoto, Japan aut NATIONALLICENCE 700 1- Shioya Masatoshi Deptarment of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1, O-okayama, Meguro-ku, 152-8552, Tokyo, Japan aut NATIONALLICENCE 700 1- Iwashita Norio National Institute of Advanced Industrial Science and Technology, 16-1, Onokawa, Tsukuba, 305-8569, Ibaragi, Japan aut NATIONALLICENCE 700 1- Kawahara Yutaka Department of Biological & Chemical Engineering, Gunma University, 1-5-1, Tenjin-cho, 376-8515, Gunma, Kiryu, Japan aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/6(2007-03-01), 2076-2080 0022-2461 42:6<2076 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer