@article{oai:nagasaki-u.repo.nii.ac.jp:00007572, author = {森下, 浩史 and 小林, 雅通 and 下村, 正樹 and 井口, 正俊 and 金子, 文俊}, journal = {長崎大学教育学部自然科学研究報告, Science bulletin of the Faculty of Education, Nagasaki University}, month = {Feb}, note = {Polarized raman spectra of needle-like and feather-shaped single crystals of trigonal polyoxymethylene (t-POM) consisting of fully extended molecular chains, were measured on a micron-sized cystal by means of the Raman microprobe technique. It was clear that the spectra of these single crystals were quite similar to the spectra of the moth-shaped t-POM single crystals which were obtained by the thermal-induced phase transition of the moth-shaped single crystals of orthorhombic polyoxymethylene1). Polarized Raman spectra of pressurized superdrawn fibers, which were well-oriented and semitransparent samples of t-POM, were obtained theoretically by the ordinary right-angle scattering at room temperature2). In the present study, we could observe the spectraof [YY] polarization of the superdrawn fibers. In addition, twobandsat 1230 and 462 cm-1 in the [YX] polarization, and one band at 198 cm-1 in the[YZ], were newly detected by polarized Raman measurements without the filter for the exitation laser beam, respectivley. And polarized infrared spectra of these fibers were measured, too. The bond assignments of t-POM including the C-H streching vibration reagion were able to be confirmed on the basis of these polarized spectral data. The angular dispersion of E1(7) and E1(8) were measured and discussed on the LO-TO splitting. Raman spectra of needle-like single crystals of polyoxymethylene-d2 consisting of fully extended molecular chains were measured, and it was discussed on the E2 modes., 長崎大学教育学部自然科学研究報告. vol.40, p.41-54; 1989}, pages = {41--54}, title = {三方晶ポリオキシメチレン伸び切り鎖結晶の分光学的研究}, volume = {40}, year = {1989} }