AMB Express

Table 4 Contact angles and surface free energy parameters of polystyrene with and without a biosurfactant adsorbed layer

From: Diverse effects of a biosurfactant from Rhodococcus ruber IEGM 231 on the adhesion of resting and growing bacteria to polystyrene

Polystyrene surface	Contact angles (degree)				Parameters (mJ m⁻²)
Polystyrene surface	Water	Glycerol	Hexadecane	Dimethyl-sulfoxide	γ	γ^LW	γ^AB	γ⁻	γ⁺
Uncovered	88 ± 2	79 ± 1	10 ± 2	51 ± 1	29.1	27.1	2.0	4.0	0.25
Covered with biosurfactant	86 ± 2	75 ± 2	41 ± 2	51 ± 1	27.2	21.2	5.0	4.3	1.45

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