Table 1 Values of copper CRs in 1.0 M H2SO4 solution, % IEs and θs of the examined surfactants at 298 K.

From: Evaluation of synthesized biosurfactants as promising corrosion inhibitors and alternative antibacterial and antidermatophytes agents

Surf

CR (mpy)

AS

CR (mpy)

HS

CR (mpy)

TS

Conc (mg/l)

SD

% IE

θ

SD

% IE

θ

SD

% IE

θ

0

112

5.817

–

–

112

5.817

–

–

112

5.817

–

–

100

58

2.704

48

0.482

57

3.021

49

0.491

48

1.984

57

0.571

200

43

2.541

62

0.616

40

2.243

64

0.643

34

1.802

70

0.696

300

34

1.478

70

0.696

30

1.747

73

0.732

24

1.317

79

0.786

400

26

1.402

77

0.768

25

1.521

78

0.777

18

1.134

84

0.839

500

21

1.271

81

0.812

19

1.092

83

0.830

13

0.581

88

0.884

  1. AS sodium N-dodecyl asparagine, HS sodium N-dodecyl histidine, TS sodium N-dodecyl tryptophan, CR corrosion rates, % IE inhibition efficiency.
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