D311 POLY(VINYLALCOHOL) ADSORPTION ON ICE SURFACE STUDIED BY SCANNING TUNNELING MICROSCOPY(Micro-scale phenomena)

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概要

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• Methods for preventing ice from recrystallization are necessary for ice-slurry systems. Antifreeze protein (AFP) type I, which is found in fish living in cold ambient conditions, is known to be an effective additive for making ice slurries resistant to recrystallization. AFP type I can be adsorbed onto ice surfaces, inhibiting crystal growth and recrystallization. However, it is expensive and easily degrades. Therefore, we investigated the use of poly(vinyl alcohol) (PVOH) as a substitute. We analyzed ice surfaces containing PVOH molecules by scanning tunneling microscopy (STM) to investigate the mechanism of crystal-growth inhibition at the molecular level. We found obvious grooves on the ice surface, which showed that PVOH significantly influenced the surface morphology of ice. The length of the grooves approximately corresponded to that of a PVOH molecule. This indicates that PVOH molecules were adsorbed onto ice crystal surfaces, creating an energy barrier and inhibiting crystal growth.

• 一般社団法人日本機械学会の論文
• 2000-10-01

著者

• Zhang Xu

  Mechanical Engineering Laboratory

• Yabe Akira

  Mechanical Engineering Laboratory

• Lu Shu-shen

  South China University And Technology

• Inada Takaaki

  Mechanical Engineering Laboratory

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• Simultaneous Observation of Millisecond Dynamics in Atomistic Structure, Force and Conductance on the Basis of Transmission Electron Microscopy : Surface, Interfaces, and Films
• D311 POLY(VINYLALCOHOL) ADSORPTION ON ICE SURFACE STUDIED BY SCANNING TUNNELING MICROSCOPY(Micro-scale phenomena)
• Drag Reduction and Thermal Behavior of Nanoscale Concave-Convex Surfaces

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