Proceedings of the Korean Fiber Society Conference (한국섬유공학회:학술대회논문집)

The Korean Fiber Society (한국섬유공학회)
권호 표지

Thermal and Electro-Optic Properties of a Side Chain Liquid Crystalline Polysilozanes cotaining a Low Molecuar Weight LIquid Crystal

  • Lee, Tae-Jeong (Dept. of Textile Engineering, Pusan National University) ;
  • Kim, Eun-Yeong (Dept. of Textile Engineering, Pusan National University) ;
  • Huh, Jae-Ho (Dept. of Textile Engineering, Pusan National University) ;
  • Wang, Young-Soo (Dept. of Textile Engineering, Pusan National University) ;
  • Kim, Han-Do (Dept. of Textile Engineering, Pusan National University)
  • Published : 1997.10.01
Download PDF
⟨ Previous Next ⟩

Abstract

Aggregation states ans electro-optic properties of a binary mixture by mixing a side chain type liquid crystalline polymer(LCP) and a low molecular weight liquid crystal(LMLC) have been studied. Side chain liquid crystalline polysiloxanes were synthesized from allyl bromide, p-hydroxy benzoic acid, p-cyanophenol, p-methoxyphenol and polysiloxanes. Low molecular weight liquid crystals were synthesized from allyl bromide, p-hydroxy benzoic acid and 4-cyano 4'-hydroxy biphenyl. And then, their properties were compared with blended liquid crystals. The thermal properties of the blended liquid crystals were evaluated using differential scanning calorimetry. The phase behavior of blended sample with temperature were also observed polarized microscope with hot stage. Thus, it seemed to us that a study of LC polysiloxanes with LMLC would be useful, especially in view of the fact that, systematic investigations have been carried out on the effects of changes in LCP/LMLC binary system on the properties of this relatively new type of liquid crystal.

Keywords