a. Construct the Zisman plot b. Determine the critical surface tension (oc) of Teflon.

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Contact angle experiments were conducted at room temperature with various liquids and a Teflon surface.
Using the data given in the table below:
a. Construct the Zisman plot
b. Determine the critical surface tension (oc) of Teflon.
Test Liquid Surface Tension Contact Angle
(mN/m)
(degrees)
n-pentane
n-hexane
n-heptane
n-octane
n-decane
cyclohexane
n-tetradecane
toluene
15.4
17.4
19.9
21.3
23.8
25.5
26.4
28.4
0
0
19.9
25.8
34.9
39.6
43.9
47.9
Transcribed Image Text:Contact angle experiments were conducted at room temperature with various liquids and a Teflon surface. Using the data given in the table below: a. Construct the Zisman plot b. Determine the critical surface tension (oc) of Teflon. Test Liquid Surface Tension Contact Angle (mN/m) (degrees) n-pentane n-hexane n-heptane n-octane n-decane cyclohexane n-tetradecane toluene 15.4 17.4 19.9 21.3 23.8 25.5 26.4 28.4 0 0 19.9 25.8 34.9 39.6 43.9 47.9
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