JaLCDOI 10.18926/19622
フルテキストURL Mem_Fac_Eng_OU_31_1_5.pdf
著者 島村 薫| Zhang Chunxiao| 内田 哲也|
抄録 Rigid polymer poly(p-phenylene benzobisthiazole) was crystallized from dilute solution. Electron microscopy showed that upon quenching, flat fibrils with several nm thick were produced. Subsequent heat treatment in solvent changed the fibril into "shish-kebab". On the other hand, by isothermal crystallization, an aggregate of parallel rod-like crystals was obtained. The molecular chains were accommodated normal to the rod. Based on the observation of crystal morphology, the isothermal crystallization mechanism was proposed. Because of regidity of polymer chains and wide distribution of the molecular length, the chain ends were inevitably included within the crystals resulting in crystal defects such as axial shift, lattice curvature and edge dislocation which were directly observed by lattice imaging.
出版物タイトル Memoirs of the Faculty of Engineering, Okayama University
発行日 1996-12-27
31巻
1号
開始ページ 5
終了ページ 10
ISSN 0475-0071
言語 English
論文のバージョン publisher
NAID 120002309167
JaLCDOI 10.18926/19624
フルテキストURL Mem_Fac_Eng_OU_31_1_11.pdf
著者 Zhang Chunxiao| Tanigawa Satoshi| 内田 哲也| 島村 薫|
抄録 Poly[(benzo[1,2-d:5,4-d']bissthiazole-2,6-diyl)-1,4-phenylene](cis-PBZT)with a relatively high molecular weight was prepared by a new synthesis route. Properties of the synthesized polymer, such as thermostability, liquid crystallinity etc. were investigated and compared with those of trans-PBZT. cis-PBZT was crystallized from dilute solution and the electron microscopy showed that the precipitate was a rod-like crystal similar to that of trans form. In spite of rigid nature of the back bone, cis-PBZT showed poor crystallinity.
出版物タイトル Memoirs of the Faculty of Engineering, Okayama University
発行日 1996-12-27
31巻
1号
開始ページ 11
終了ページ 17
ISSN 0475-0071
言語 English
論文のバージョン publisher
NAID 120002309203