Kyudeok Oh
서울대학교 제지 및 지류가공학 · 공학
Kyudeok Oh 교수의 연구실은 종이 및 코ating 기술 분야에서 활동하며, 특히 나노셀룰로오스 기반 첨가제인 셀룰로오스 나노피브릴(CNF)과 카복시메틸셀룰로오스(CMC)의 물리화학적 특성과 종이 코ating에 미치는 영향을 중심으로 연구를 진행하고 있습니다. 코ating의 유동성, 수분 유지 능력, 건조 과정 중 수축 거동, 다공구조 형성 및 표면 특성 제어 등에 초점을 맞추고 있으며, 종이의 인쇄성과 광택 향상에도 기여하는 기술적 원리를 규명하고자 합니다. 또한 종이 기반 센서 등 응용 기술 개발을 통해 나노소재의 실용화 가능성을 탐색하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
The dried structure of paints and coatings are important to understand. In paper coatings, pigments and binder types are known to influence this structure. The influence of a new additive such as cellulose nanofibrils (CNF) on the interaction between the coating components is not thoroughly examined. In this study, the effect of CNF on the rheology of coating color and structure formation of the coating layer was investigated and compared to that of carboxymethyl cellulose (CMC). The addition of
The effects of cellulose nanofibrils (CNFs) and carboxymethyl cellulose (CMC) on the shrinkage and surface characteristics of a pigment coating layer were compared. The shrinkage of the coating layer caused by evaporation of the aqueous phase during the drying process was measured using the beam-deflection method. CMC increased drying stress via rapid immobilization of the wet coating with precipitation of the CMC molecules. However, the coating that contained CNF had a much lower stress level b
The pore structure of the coating layer is one of the most important factors in determining the printability of coated papers. The coating pigment and binder are two principal components in paper coating, and their characteristics have a critical influence on the coating structure. The glass transition temperature (Tg) of latex binders affects the mechanical strength and pore structure of the pigment coating layer because the latex Tg influences the binding ability of latex and the shrinkage of
Cellulose nanofibrils (CNF) derived from wood can be used as thickening agents for suspensions or slurries because they form a gel structure by absorbing water and demonstrate an excellent shear thinning behavior. When used as a thickening agent for paper coating, CNF influences the rheological properties and water retention of the coating color, affecting the properties of the coated paper. In this study, the effects of CNF and carboxymethyl cellulose (CMC) on the properties of the coated paper
