caa a22 4500 475764609 CHVBK 20180406123601.0 cr unu---uuuuu 170329e20000801xx s 000 0 eng 10.1007/s003960000305 doi (NATIONALLICENCE)springer-10.1007/s003960000305 Tacticity, molecular weight, and molecular-weight-distribution relationships in stereoregular polyacrylonitrile prepared by electron beam irradiation canal polymerization [Elektronische Daten] [M. Minagawa, Y. Okada, K. Nouchi, Y. Sato, F. Yoshii] The preparation and characterization of stereoregular isotactic polyacrylonitrile (PAN) by electron beam (EB) irradiation on a urea canal complex are described. The EB method has several advantages over the ordinary γ-ray irradiation method: a very short polymerization time is needed (within a few seconds) and EB irradiation is carried out intermittently, and so all the polymer properties can be studied as a function of the EB irradiation dose. The structure-properties relationships of PAN, such as intrinsic viscosity versus the number-average molecular weight and the viscosity versus the isotacticity range were clarified. Significant information for the optimization of the tacticity of PAN was extracted. Springer-Verlag Berlin Heidelberg, 2000 Key words Isotactic polyacrylonitrile nationallicence Canal polymerization nationallicence Electron beam irradiation nationallicence Structure nationallicence properties relationships nationallicence Minagawa M. Department of Materials Science and Engineering, Faculty of Engineering, Yamagata University Yonezawa 992-8510, Japan, JP aut Okada Y. Department of Materials Science and Engineering, Faculty of Engineering, Yamagata University Yonezawa 992-8510, Japan, JP aut Nouchi K. Department of Materials Science and Engineering, Faculty of Engineering, Yamagata University Yonezawa 992-8510, Japan, JP aut Sato Y. ACT Research Co. Ltd., Nagoya Branch Office, Nagoya 450-0002, Japan, JP aut Yoshii F. Takasaki Radiation Chemistry Research Establishment, Japan Atomic Energy Research Institute, Takasaki 370-1292 Japan, JP aut https://doi.org/10.1007/s003960000305 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s003960000305 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Minagawa M. Department of Materials Science and Engineering, Faculty of Engineering, Yamagata University Yonezawa 992-8510, Japan, JP aut NATIONALLICENCE 700 1- Okada Y. Department of Materials Science and Engineering, Faculty of Engineering, Yamagata University Yonezawa 992-8510, Japan, JP aut NATIONALLICENCE 700 1- Nouchi K. Department of Materials Science and Engineering, Faculty of Engineering, Yamagata University Yonezawa 992-8510, Japan, JP aut NATIONALLICENCE 700 1- Sato Y. ACT Research Co. Ltd., Nagoya Branch Office, Nagoya 450-0002, Japan, JP aut NATIONALLICENCE 700 1- Yoshii F. Takasaki Radiation Chemistry Research Establishment, Japan Atomic Energy Research Institute, Takasaki 370-1292 Japan, JP aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer