. 2020 Jul 22;9(8):434. doi: 10.3390/antibiotics9080434

Table 1.

Contact angle results and the calculated values of the surface energy of the samples.

Sample	θ_w	θ_br	θ_form	γ_s⁻	ΔG_s^LW	ΔG_s^AB	ΔG_s^TOT
PDMS	113.6° ± 0.6	87.6° ± 1.8	111.2° ± 0.6	4.5 ± 0.9	−2.9 ± 0.5	−58.9 ± 4.3	−61.8 ± 4.4
p-CNT/PDMS	117.0° ± 0.7	80.4° ± 0.7	110.4° ± 0.8	2.5 ± 0.4	−1.2 ± 0.1	−70.2 ± 2.9	−71.4 ± 2.9
f-CNT/PDMS	116.6° ± 0.6	76.6° ± 1.5	111.1° ± 0.5	3.0 ± 0.6	−0.6 ± 0.2	−67.0 ± 3.7	−67.7 ± 3.7
p-BM/PDMS	121.5° ± 0.3	88.8° ± 0.9	115.7° ± 0.4	1.9 ± 0.3	−3.2 ± 0.3	−73.8 ± 2.2	−77.1 ± 2.2
f-BM/PDMS	113.6° ± 0.4	71.3° ± 1.4	109.1° ± 0.6	4.0 ± 0.7	−0.1 ± 0.1	−61.5 ± 3.3	−61.7 ± 3.3
p-THF/PDMS	116.6° ± 0.3	80.5° ± 1.7	112.0° ± 0.5	3.2 ± 0.7	−1.2 ± 0.3	−65.7 ± 3.8	−67.0 ± 3.8
f-THF/PDMS	125.6° ± 0.4	92.3° ± 1.5	118.6° ± 0.9	1.2 ± 0.4	−4.3 ± 0.5	−80.1 ± 3.7	−84.5 ± 3.8

θ_w, θ_br and θ_form: the average of measured contact angles with water, α-bromonaphthalene and formamide, respectively; γ_s⁻: electron donor parameter; ΔGs^LW and ΔG_s^AB: Lifshitz–van der Waals and acid-base free energies of the surface, respectively; ΔG_s^TOT: free energy of interaction between two entities of the surfaces immersed in water. Values of γ_s⁻, ΔG_s^LW, ΔG_s^AB and ΔG_s^TOT are in mJ m⁻².