Production of phenolic polymers catalyzed by peroxidases has been studied for decades and drawing much interest due to the environmentally friendly production process and mild reaction conditions. Various substituted phenols, aminophenols, and anilines have been polymerized by peroxidases in organic solvents-water mixtures (1, 2). Phenolic polymers thus produced have potentials as alternative materials in a wide range of fields where conventional phenol-formaldehyde polymers, resols and novolak, have been used. In this study, various substituted phenols and aminophenols were polymerized by horseradish peroxidase in a dioxane-aqueous buffer (100 mM sodium acetate, pH5) mixture (80% dioxane by volume) with H2O2 as an oxidant. DSC(differential scanning calorimetry) was used to investigate the structural features of the polymer products. The two types of phenolic products, substituted phenols and aminophenols, resulted in the distinctive DSC curves. Phenylphenol polymer shows complex structural transitions between 150-250℃ while phenylenediamine polymer shows a strong single endothermic peak near 150℃. These DSC curves imply that the two types of phenol polymers possess different structures; more amorphous nature for phenylphenol polymer and an homogeneous oriented nature for phenylenediamine polymer.
키워드
peroxidasephenolsDSC
저자
Keungarp RYU [ Dept Chemical Engr Bioengr, University of Ulsan ]
NGUYEN TRANG [ Dept Chemical Engr Bioengr, University of Ulsan ]
Haksung LEE [ Dept Chemical Engr Bioengr, University of Ulsan ]
한국생물공학회 [The Korean Society for Biotechnology and Bioengineering]
설립연도
1984
분야
공학>생물공학
소개
이 법인은 생물 공학의 발전과 보급에 이바지하고, 회원 상호 간의 연구 협력과 친목을 도모함을 목적으로 한다
1. 생물공학 분야의 발전을 위한 연구 협력
2. 생물공학의 실용화를 촉진시키기 위한 산학 협동
3. 학술연구 발표회, 강연회, 연수회 등 학술활동의 개최
4. 국,영문 학술지,소식지,학술회의 Proceedings 및 학술도서의 발간
5. 생물공학 발전을 위한 정책 건의
6. 기타 국제 교류 등 본 학회의 목적 달성을 위한 제반 활동