The molar ratios of PVP/TTIP/TEOS were also varied from (1.0:5.0:0.0) to (1.0:4.0 :1.0), (1.0:3.0:2.0), and (1.0:2.5:2.5) and their corresponding samples denoted as samples A, B, C, and D, respectively
The molarratios of PVP/TTIP/TEOS were also varied from (1.0:5.0:0.0) to(1.0:4.0 :1.0), (1.0:3.0:2.0), and (1.0:2.5:2.5) and their correspondingsamples denoted as samples A, B, C, and D, respectively