Abstract
Structure and orientational behavior of two kinds of segmented poly(urethaneurea)s, SPUUs, having different soft segment molecular weights, were investigated by dynamic infrared absorption dichroism (DIR). DIR is a rheo-optical technique and a powerful tool to study orientational behavior of individual segments on multi-phase polymers under sinusoidal mechanical stimuli. SPUUs, being multi-block copolymers, consist of hard segment domains and soft segment matrix. Analysis of the temperature and frequency dependence of the dynamic strain–dichroic ratio coefficient, L* disclosed the following: (1) both the hard and soft segments are deformed synchronously (in-phase) with respect to applied strain, (2) the Arrhenius plot for the shift factor of L* is composed of two contributions, β (the glass transition) and γ dispersions (local motions related to methylene sequences). These observed dispersions were consistent with the corresponding mechanical dispersions, and (3) the hard segment of SPUU, having a larger soft segment molecular weight (TM-3), has a higher capability of orientation in response to external strain than that having a smaller soft segment molecular weight (TM-1).
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R. S. Stein, Polym. J., 17, 289 (1985).
K. Saijo, S. Suehiro, and T. Hashimoto, Polym. Prepr., Jpn., 38, 1117 (1989).
S. Suehiro, K. Saijo, Y. Ohta, T. Hashimoto, and H. Kawai, Anal. Chim. Acta, 189, 41 (1986).
A. Tanaka, E. P. Chang, B. Delf., I. Kimura, and R. S. Stein, J. Polym. Sci., Polym. Phys. Ed., 11, 1891 (1973).
T. Kyu, S. Suehiro, S. Nomura, and H. Kawai, J. Polym. Sci., Polym. Phys. Ed., 18, 951 (1980).
T. Kyu, M. Yamada, S. Suehiro, and H. Kawai, Polym. J., 12, 809 (1980).
K. Fujita, H. Niwa, S. Nomura, and H. Kawai, J. Polym. Sci., Polym. Phys. Ed., 21, 1713 (1983).
S. Nomura, Sen-i to Kogyo, 41, 450 (1985).
S. Nomura, M. Nakamichi, Y. Yamamoto, M. Ohgushi, T. Yamamoto, T. Soen, and M. Shibayama, in preparation.
H. W. Siesler, Polym. Bull., 9, 382 (1983).
H. W. Siesler, Polym. Bull., 9, 471 (1983).
H. W. Siesler, Polym. Bull., 9, 557 (1983).
H. W. Siesler, Adv. Polym. Sci., 65, 1 (1984).
H. W. Siesler, Colloid Polym. Sci., 262, 223 (1984).
H. W. Siesler, Pure Appl. Chem., 57, 1603, (1985).
H. W. Siesler, Ber Bunsenges Phys. Chem., 92, 641 (1988).
M. Shibayama, T. Kawauchi, T. Kotani, S. Nomura, and T. Matsuda, Polym. J., 18, 719 (1986).
M. Shibayama, Y. Ohki, T. Kotani, and S. Nomura, Polym. J., 19, 1067 (1987).
T. Yamamoto, M. Shibayama, and S. Nomura, Rep. Prog. Polym. Phys. Jpn., 30, 541 (1987).
S. Nomura, M. Nakamichi, M. Morikawa, M. Kurokawa, and T. Soen, Rep. Prog. Polym. Phys. Jpn., 26, 495, (1983).
H. Ono and I. Kimura, “Kagakuzoukan,” No. 58, Kagakudoujin, Kyoto, 1973, p 185.
F. Hoffman and R. Bonart, Makromol. Chem., 184, 1529 (1983).
R. Bonart., J. Macromol. Sci. Phys., 132, 115 (1968).
I. Kimura. H. Ishihara, H. Ono, N. Yoshihara, S. Nomura, and H. Kawai, Macromolecules, 7, 355, (1974).
S. B. Lin, K. S. Hwang, S. Y. Tsay, and S. L. Cooper, Colloid Polym. Sci., 263, 128 (1985).
H. Ishihara, I. Kimura, K. Saito, and H. Ono, J. Macromol. Sci.-Phys., B10, 591 (1974).
C. B. Wang and S. L. Cooper, Macromolecules, 16, 775 (1983).
T. Yamamoto, M. Shibayama, and S. Nomura, Polym. J., 21, 895 (1989).
T. Kotani, M. S. thesis, submitted to Department of Textile Engineering, Kyoto Institute of Technology Kyoto (1987).
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Yamamoto, T., Shibayama, M. & Nomura, S. Structure and Properties of Fatigued Segmented Poly(urethaneurea)s IV. Dynamic Infrared Dichroism. Polym J 23, 311–320 (1991). https://doi.org/10.1295/polymj.23.311
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DOI: https://doi.org/10.1295/polymj.23.311