생체적합성과 생분해성을 갖는 Polypeptide Copolymer 의 합성과 물성에 관한 연구. (I) 폴리에틸렌 글리콜을 그라프트시킨 폴리펩티드의 합성

Polyethylene glycol (PEG) grafted poly γ-benzyl L-glutamate (PBLG) were prepared from esterification or substitution reaction of PBLG with PEG having hydroxyl group at one end or primary amino groups at both ends. The viscosity of these polymer solution was decreased with decrease of polymer concent...

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Veröffentlicht in:Journal of the Korean Chemical Society 1990, Vol.34 (2), p.197-202
Hauptverfasser: 강인규(Inn-Kyu Kang), 권대룡(Dae-Ryong Kwon), 조종수(Chong-Su Cho), 성용길(Young Kiel Sung)
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Sprache:kor
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Zusammenfassung:Polyethylene glycol (PEG) grafted poly γ-benzyl L-glutamate (PBLG) were prepared from esterification or substitution reaction of PBLG with PEG having hydroxyl group at one end or primary amino groups at both ends. The viscosity of these polymer solution was decreased with decrease of polymer concentration. But in more dilute solution the viscosity was increased with decrease of polymer concentration. PEG-grafted PBLG polymers showed smaller water contact angles than PBLG homopolymer, and the water contact angles of the surface of PEG-grafted PBLG polymers were largely dropped by reacting with aminoethanol, resulting in hydrogel surfaces. 한쪽 말단에 히드록시 혹은 양말단에 아미노기를 갖는 폴리에틸렌글리콜(PEG)을 이용한 에스테르 교환 혹은 아미노 치환반응을 행하여 (PEG) grafted poly γ-benzyl L-glutamate (PBLG)를 합성했다. 이들의 점도 특성은 진한 용액내에서는 농도 감소에 따라 점도가 감소하다가 어느 이상 묽어지게 되면, 농도 감소에 따라 점도는 다시 증가했다. PEG를 함유하는 폴리펩티드 중합체의 젖음성은 동종 중합체보다도 향상 됐고, 이들 중합체 필름을 아미노에탄올과 표면반응시킨 결과, 물의 접촉각이 대폭적으로 작아져 표면에 수화겔이 형성됨을 알 수 있었다.
ISSN:1017-2548
2234-8530