Magnetic orientation of side-chain liquid crystalline polyguanamines

Author

Oishi, Yoshiyuki ; Suzuki, Takahide ; Awano, Shinobu ; Yonetake, Koichiro

Author_Institution

Dept. of Chem. Eng., Iwate Univ., Morioka, Japan

Volume

14

Issue

2

fYear

2004

fDate

6/1/2004 12:00:00 AM

Firstpage

1604

Lastpage

1607

Abstract

Novel side-chain liquid crystalline polyguanamine with mesogenic groups (LCPGs) exhibited smectic liquid crystallinity. The polymers had an oriented structure under a magnetic field due to higher diamagnetic susceptibility of the mesogenic group. The mesogenic groups could be perpendicularly arranged on a glass substrate under a vertical magnetic field. Furthermore, they were obliquely aligned on the glass substrate by a tilt magnetic field. Tilt angles between the mesogen and the glass substrate were almost consistent with the directions of applied magnetic fields. Magnetic fields afforded various oriented structures, and the magneto-oriented structures were fixed in the samples.

Keywords

X-ray diffraction; crystal orientation; diamagnetic materials; liquid crystal polymers; magneto-optical effects; molecular orientation; optical microscopy; diamagnetic susceptibility; glass substrate; magnetic field; magnetic orientation; magneto-oriented structures; mesogenic groups; polymers; side-chain liquid crystalline polyguanamines; smectic liquid crystallinity; Cooling; Crystallization; Heating; Liquid crystal polymers; Magnetic fields; Magnetic liquids; Optical diffraction; Optical microscopy; Superconducting magnets; X-ray diffraction; Magnetic field; magnetic orientation; magneto-oriented structure; mesogenic group; side-chain crystalline polymer;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2004.831009

Filename

1325109