... Kenji Tsuchihara, Toshio Masuda,* and Toshinobu Higashimura* Department of Polymer Chemistry, Kyoto University Kyoto 606-01 ... 0002-7863/91/1513-8548$02.50/0 0 1991 American Chemical Society ... E), 1460 MPa; elongation at break (YE), 1.5% tensile strength (us), 19 MPa ...