Article
  • Synthesis of N-Acetylated Glycol Chitosans and Their Thermo-sensitive Sol-Gel Transition Properties
  • You HS, Cho MO, Cho IS, Li Z, Kim NH, Jang MK, Kang SW, Huh KM
  • N-아세틸화 글리콜 키토산의 합성과 온도감응성 졸-젤 전이 특성
  • 유호선, 조명옥, 조익성, 이정정, 김남홍, 장미경, 강선웅, 허강무
Abstract
In this study, new polysaccharide-based thermo-sensitive polymers were synthesized and their thermo-sensitive sol-gel transition properties were evaluated. Glycol chitin structures were successfully introduced by N-acetylation reaction of glycol chitosan. The aqueous solutions of glycol chitins demonstrated unique thermo-sensitive sol-gel transition behaviors around 37 ℃. Their sol-gel transition properties were observed at a relatively lower concentration range (3~16 wt%) compared to those of typical synthetic polymer based systems and efficiently modulated by varying molecular weight, DA, and concentration. Based on their thermo-sensitivity, low cyto-toxicity, and high gel stability, the glycol chitin polymers could be utilized for various biomedical applications, such as drug delivery, tissue engineering, and 3D cell culture.

본 연구에서는 수용성 천연고분자인 글리콜 키토산의 N-아세틸화를 통해 새로운 천연고분자 기반의 온도감응성 고분자를 합성하고, 온도감응성을 평가하였다. 글리콜 키토산의 N-아세틸화 반응을 통해 글리콜 키틴 구조의 고분자를 성공적으로 합성하였고, 수용액 상에서 37 ℃ 주변에서 온도감응성 졸-젤 전이현상이 효과적으로 일어남을 확인하였다. 이러한 졸-젤 전이 특성은 기존의 합성고분자 기반 온도감응성 고분자에 비해 상대적으로 더 낮은 농도(3~16 wt%)에서 보였고, 고분자의 분자량, 아세틸화도, 농도를 변화시킴으로써 효과적으로 조절될 수 있었다. 글리콜 키틴은 우수한 온도감응성 뿐 아니라 낮은 세포독성과 향상된 젤 안정성을 보임으로써, 약물전달, 조직공학, 3차원 세포배양 등 다양한 생체의료용 응용분야에 유용하게 활용될 수 있을 것으로 전망된다.

Keywords: glycol chitosan; N-acetylation; sol-gel transition; thermo-sensitive hydrogel

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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

  • 2016; 40(2): 328-335

    Published online Mar 25, 2016

  • 10.7317/pk.2016.40.2.328
  • Received on Dec 19, 2015
  • Accepted on Dec 31, 2015