挪威云杉树脂的临界表面张力和临界Hamaker常数

SURFACE PROPERTIES OF NORWAY SPRUCE RESIN

应用一系列烷烃类液体和接触角技术 ,对挪威云杉 (PiceaabiesL .Karst .)树脂的一些表面特征作了研究。发现该树脂的临界表面张力约为 18.4 8mN/m ,根据Zisman的临界表面张力外推方法将液体的Hamaker常数与cosθ作图 ,发现该树脂有一个唯一的临界Hamaker常数约 4 .18× 10 2 0 J。

Using the contact angle technique and a series of alkanes as probe liquids to wet the surface of Norway spruce resin (Picea abies L. Karst.), the critical surface tension of this resin was measured to be about 18.48 mN/m. Using Hamaker's extrapolation method for critical surface tension, a good linear relationship was found by plotting Hamaker constant of the liquid with cos θ. This method was thus developed to obtain the unique critical Hamaker constant for this resin to be about 4.18×10^(-20) J.