PAb16 液晶性から見た高分子配向体の構造

概要

論文の詳細を見る
The structure of uniaxially drawn poly (ethylene terephthalate) (PET) was investigated in view of the similarity to the structure of a liquid crystalline copolyester (Rodrun, LC-3000). Solid state CP/MAS NMR spectra for the drawn PET and LC-3000 were close to each other, but were far different from the line shape for the amorphous, non-oriented PET sample. Difference of dielectric loss (ε"), obtained by subtraction of the ε" of the non-oriented PET from that of the drawn PET, exhibited a dispersion peak centered at a higher frequency. The location of this peak is close to the peak position observed for LC-3000. This indicates a similarity in molecular motion of alkyl groups of these two polymeric materials. The formation process of the ordered region during uniaxial drawing could be described as (1) orientation without forming the ordered region, (2) the formation of the ordered structure, and (3) further ordering in the ordered region.
日本液晶学会の論文
1999-09-28