The University of Tokyo · 재료과학
요노 유코 교수의 연구실은 주로 셀룰로오스 기반 나노소재의 분리, 변형 및 물성 분석을 중심으로 연구를 진행하고 있습니다. 특히 템포 산화, 리튬 할라이드/디메틸아세타마이드 용매 체계를 활용한 분자량 분포 측정, 그리고 다양한 원료(목재, 면, 해조류 등)에서 유래한 나노셀룰로오스의 분자 구조와 기능화 특성에 대한 깊이 있는 분석을 수행하고 있습니다. 이는 생분해성 소재 개발과 고부가가치 나노소재 응용에 기여하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
Findings from large epidemiologic studies indicate that there is a link between smoking and extrinsic skin ageing. We previously reported that matrix metalloproteinases (MMPs) mediate connective tissue damage in skin exposed to tobacco smoke extracts. Tobacco smoke contains more than 3800 constituents, including numerous water-insoluble polycyclic aromatic hydrocarbons (PAHs) that trigger aryl hydrocarbon receptor (AhR) signalling pathways. To analyse the molecular mechanisms involved in tobacco
Freeze-dried microfibrillated cellulose (MFC) was directly dissolved in 8.0% w/w lithium chloride/N,N-dimethylacetamide (LiCl/DMAc), and MFC/LiCl/DMAc solutions with accurate MFC concentrations were prepared. The different MFC solutions were diluted to 1.0% and 0.5% w/v LiCl/DMAc, and subjected to size-exclusion chromatography with multiangle laser-light scattering and refractive index analyses (SEC/MALLS/RI), and off-line RI analysis to determine their refractive index increments (dn/dc). Chiti
Wood holocelluloses, softwood α-cellulose, bleached kraft pulps, and bacterial cellulose were dissolved in 8% (w/w) lithium chloride/N,N-dimethylacetamide (LiCl/DMAc) after ethylenediamine pretreatment and subsequent solvent exchange to DMAc. The obtained solutions were diluted to 1% (w/v) LiCl/DMAc and analyzed using size-exclusion chromatography and multi-angle laser-light scattering (SEC-MALLS). The holocelluloses and kraft pulps showed bimodal molecular-mass distributions because of the pres
Abstract The molar masses and molar mass distributions of three commercial regenerated cellulose samples, viscose rayon, Tencel, and Bemliese (or cuprammonium nonwoven), have been determined by dissolution in 8% (w/w) lithium chloride/ N , N -dimethylacetamide (LiCl/DMAc) and subsequent size-exclusion chromatography with multi-angle laser-light scattering detection (SEC/MALLS). Before dissolution in LiCl/DMAc, the regenerated cellulose samples were pretreated by the following three methods: (1)
