葉の界面化學的研究

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タイトル別名
  • Surface Chemical Studies on the Plant Leaf
  • ハ ノ カイメン カガクテキ ケンキュウ 1 ヌレ ノ ソクテイホウ ト ソクテイ レイ
  • Part 1. A Method to measure the Wetting and Examples of the Measurement
  • (第1報)濡れの測定法と測定例

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説明

1. We designed a method to measure the apparent adhesion tension of liquid against a rough surface such as the plant leaf. The values of organic liquids against glass surface comparatively agreed with those of BARTELL's(3).<br> 2. The results of measurement of the wetting of various, leaves, paraffin coated glass and paraffin coated wire netting are as follows:<br> (A) It is necessary for wetting that the adhesion tension is larger than the surface tension of liquid.<br> (B) It is convenient to assume three types in the wetting of the plant leaf: (a) Ar<σ; (b) Ar>σ, Aa<0; (c) Ar>σ, Aa>0. Ar: the receding adhesion tension, Aa: the advancing adhesion tension, σ: the surface tension of liquid)<br> (c) It is reasonable to assume that the ether-soluble substances (such as wax) of leaf surface are more useful in protecting the leaf surface from denaturation by water rather than from wetting.<br> (d) The strong alkali is dangerous in causing injury on rice-plant leaves.

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