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. 2020 Jan 9;12(1):178. doi: 10.3390/polym12010178

Table 2.

Contact angle, γSd (dispersion component), γSp (polar component), and γS (total surface energy) values of CNCs and modified CNCs.

Water Methylene Iodide γSd (mJ/m2) γSp (mJ/m2) γS (mJ/m2)
CNC ≤5° 20.1 ± 0.8° 32.2 41.4 73.6
Acetyl-CNC 78.3 ± 1.0° 35.3 ± 0.6° 38.1 4.14 42.2
Alkyl-CNC 84.9 ± 1.2° 33.8 ± 0.9° 40.8 1.73 42.5