Research Article

Mixture Design Approach on the Physical Properties of Lignin-Resorcinol-Formaldehyde Xerogels

Table 5

Matrix and results for D-Optimal design (mass fraction).

NumberpH (g/cm3)Rs (%) (m2/g) (cm3/g)

10.230.0350.170.000400.5653.980.423.760.656.330.013
20.230.0870.170.001950.5124.970.493.420.6041.350.104
30.230.1400.170.000400.4603.190.553.700.5516.280.048
40.230.1400.170.000400.4603.140.564.330.5515.470.045
50.230.0610.170.001180.5384.70.453.720.6334.080.082
60.230.0320.170.003500.5657.190.9025.350.30405.590.166
70.230.0870.170.001950.5124.90.484.210.5938.150.095
80.230.1400.170.003500.4575.210.584.220.5230.110.093
90.230.1400.170.003500.4575.110.585.140.5328.200.083
100.230.0870.170.001950.5124.930.493.760.5840.070.143
110.230.1130.170.001180.4864.020.524.040.5614.560.051
120.230.1040.170.002470.4945.080.534.070.5540.410.097
130.230.0690.170.002470.5295.910.474.490.60226.450.367
140.230.0860.170.003500.5116.510.504.650.58273.050.355
150.230.0350.170.000400.5654.040.423.880.634.890.012
160.230.0330.170.001950.5656.880.5813.750.51451.860.843