Vegetable-Oil-Based Hyperbranched Polyester-Styrene Copolymer Containing Silver Nanoparticle as Antimicrobial and Corrosion-Resistant Coating Materials

Table 2

Corrosion parameter for coated and blank mild strips in different corrosive environments.

Sample code	Medium	𝐸corr (mV)	𝐼corr (mA/cm^2)	Corrosion rate (mm/yr)	Inhibition efficiency (%)
Blank	3.5 wt% HCl	−549.37	2.224	25.770	—
HBPE-St75	3.5 wt% HCl	−541.32	1.099×10^−4	1.274×10^−3	99.87
HBPE-St80	3.5 wt% HCl	−531.76	1.718×10^−7	1.990×10^−5	99.99
HBPE-St85	3.5 wt% HCl	−517.38	1.585×10^−3	1.838×10^−3	99.93
HBPE-St90	3.5 wt% HCl	−463.78	8.485×10^−3	9.834×10^−2	99.62
Blank	5.0 wt% NaCl	−575.65	0.74974	8. 6894	—
HBPE-St75	5.0 wt% NaCl	−491.75	1.108×10^−3	1.284×10^−2	99.85
HBPE-St80	5.0 wt% NaCl	−405.76	8.858×10^−4	1.027×10^−2	99.98
HBPE-St85	5.0 wt% NaCl	−366.68	5.920×10^−4	6.861×10^−3	99.92
HBPE-St90	5.0 wt% NaCl	−252.57	1.462×10^−7	1.694×10^−6	99.99
Blank	Tape water	−670.47	2.171×10^−2	2.517×10^−1	—
HBPE-St75	Tape water	−360.78	1.367×10^−6	1.584×10^−5	99.99
HBPE-St80	Tape water	−352.96	1.340×10^−6	1.553×10^−5	99.93
HBPE-St85	Tape water	−276.22	1.042×10^−6	1.298×10^−5	99.95
HBPE-St90	Tape water	−222.73	4.135×10^−7	4.792×10^−6	99.80