Article
  • Preparation and Characterization of Nylon 6,5 Copolymers from ε-Caprolactam and 2-Piperidone
  • Kim HY, Goh JS, Ryu MH, Kim DS, Song BK, Lee SH, Park SJ, Jegal J
  • ε-Caprolactam과 2-Piperidone으로부터 나일론 6,5 공중합체 제조 및 특성평가
  • 김혜영, 고진선, 류미희, 김대수, 송봉근, 이승환, 박시재, 제갈종건
Abstract
To prepare biomass based nylon 6,5 copolymers, ε-caprolactam and 2-piperidone, the monomers of nylon 6,5 copolymers, were synthesized respectively from lysine and 5-aminovaleric acid which were produced from glucose by the fermentation process. The copolymers were then polymerized by the anionic ring opening polymerization of them at 40 ℃, using potassium tert-butoxide as a catalyst and acetyl-2-caprolactam and carbon dioxide as initiators. The prepared copolymers were characterized with various analytical methods: their viscosity molecular weight (Mη) was as high as 30000 g/mol and polymerization yield was over 50%, and it was found that they were semi-crystalline polymers having melting point at 165 ℃ which was much lower than its thermal degradation point, 250 ℃. These polymers were expected to have good thermal processability and application fields.

본 연구에서는 바이오매스 기반 나일론 6,5 공중합체를 제조하기 위하여 단량체인 ε-caprolactam과 2-piperidone을 glucose로부터 발효공정으로 제조된 lysine과 5-aminovaleric acid로부터 각각 제조하였다. 이들을 potassium tertbutoxide를 촉매로 하고 acetyl-2-caprolactam과 이산화탄소를 개시제로 사용하여 40 ℃에서 음이온 개환 중합 방법을 이용하여 나일론 6,5 공중합체를 제조하였다. 제조된 바이오 나일론 6,5 공중합체의 특성을 여러 가지 기기분석 방법으로 분석하였다. 이때 얻어진 고분자의 점도분자량(Mη)은 최대 30000 g/mol 정도였으며, 중합 수율은 50% 이상이었다. 이들은 모두 semi-crystalline 고분자로 밝혀졌다. 열 특성 분석 결과 용융온도는 약 165 ℃ 정도로 분해온도 250 ℃와 큰 차이를 나타내었다. 이들 고분자들은 우수한 가공성과 응용성을 지닐 것으로 예상된다.

Keywords: biomass-based polymer; bioplastic; nylon 6,5 copolymer; ring-opening polymerization.

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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2014; 38(1): 31-37

    Published online Jan 25, 2014

  • Received on Jul 19, 2013
  • Accepted on Sep 25, 2013