研究紹介
研究室紹介
材料化学研究室
室長：原口 和敏
Nature 誌上での研究紹介
「Nanocomposite gel 表面の超撥水挙動」に関する下記論文が注目論文として Nature の "Research Highlights" に選ばれ、掲載されました。
- Original Paper:
K. Haraguchi, H.-J. Li, N. Okumura, Macromolecules, 40, 2299-2302 (2007). -
- Selected as
- "Research Highlights" in Nature, 446, 350 (2007).
- Materials science:
"Love-hate relationship"
Here's a riddle: how can a 'hydrogel' that holds more than its dry weight in water have a hydrophobic, or water-repellent, surface?
Kazutoshi Haraguchi of the Kawamura Institute of Chemical Research in Sakura, Japan, and his colleagues observed this for a hydrogel made from a network of the polymer poly(N-isopropylacrylamide) and particles of clay.
Water dropped onto a hydrogel would usually spread out and be absorbed. But water splashed onto the surface of this team's material sat in round droplets - making contact angles of up to 150". The researchers suspect that the polymer's water-repellent side-chains have wriggled to the surface, poking out to form an impenetrable layer.
