Molar Ratio of (PPG:TDI)

IONPs Size (nm)

Contact Time (hr)

Increase Percentage (%)

1:2

15 - 20

6

17.35

24

30.1

50 - 100

6

44.32

24

40.46

1:1.75

15 - 20

6

71.68

24

66.75

50 - 100

6

88.89

24

100