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Radiation-induced reactions of syndiotactic polypropylene |
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| Authors: | Tadashi Asanuma Tetsunosuke Shiomura Yuki Hirase Tomochika Matsuyama Hitoshi Yamaoka Akira Tsuchida Masataka Ohoka Masahide Yamamoto |
| Affiliation: | (1) Mitsui Toatsu Chemicals, Inc., Osaka Research Laboratory, 592 Takaishi, Osaka, Japan;(2) Research Reactor Institute of Kyoto University, 590-04 Kumatori, Osaka, Japan;(3) Department of Polymer Chemistry, Kyoto University, 606 Sakyo, Kyoto, Japan |
| Abstract: | Summary The radiation-induced reaction of highly syndiotactic polypropylene was examined by following the changes in limiting viscosity, molecular weight distribution, and stereoregularity. The degree of syndiotacticity clearly decreased even when there was no apparent change in molecular weight. Irradiation at an elevated temperature caused a marked decrease in molecular weight and formation of unsaturated residues. |
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