한국섬유공학회지 (Textile Science and Engineering)

  • 제36권2호
  • /
  • Pages.148-154
  • /
  • 1999
  • /
  • 1225-1089(pISSN)
  • /
  • 2288-6419(eISSN)
한국섬유공학회 (The Korean Fiber Society)
권호 표지

Pendant Phenyl 구조를 함유하는 가용성 복소오원환계 Polyazomethine의 합성과 성질

Synthesis and Characterization of Soluble Five-membered Heterocyclic Polyazomethines Containing Pendant Phenyl Structure

  • 정화진 (청운대학교 섬유공학과)
  • 발행 : 1999.02.01

⟨ 이전 논문 다음 논문 ⟩

초록

New aromatic polyazomethines were synthesized from two tetraphenylated heterocyclic diamines, 3,4-bis(4-aminophenyl)-2,5-diphenylpyrrole (DATPP), and 3,4-bis(4-aminophenyl)-2,5-diphenylthiophene (DATPT) with two aromatic dialdehydes, isophthalaldehyde (IPA), and terephthalaldehyde (TPA) by solution polycondensation in o-chlorophenol at room temperature. In addition, DATPP-based copolyazomethines were prepared by reacting the diamine with a combination of IPA and TPA. These polymers had inherent viscosities in the range of 0.32~0.62 dL/g and showed amorphous patterns in X-ray diffraction studies. The polyazomethines derived from IPA and the copolyazomethines with TPA containing less than 50 mol% were fairly soluble in various organic solvents such as N-methyl-2-pyrrolidone, o-chlorophenol, and 1,1,2,2-tetrachloroethane. In thermogravimetric analysis (TGA), all the polymers did not lose weight below 41$0^{\circ}C$ in air and nitrogen, and their 5% weight loss temperature in air and nitrogen were in the range of 445~485$^{\circ}C$ and 490~52$0^{\circ}C$, respectively. Differential scanning calorimetry curves also revealed decomposition behaviors similar to those observed in TGA analysis with no transition below the decomposition temperatures.

키워드

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