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

Table 4

Water effect content in xerogels shrinkage and bulk density (mass fraction).

Number						pH	(g/cm^3)	Rs (%)
1	0.17801	0.065	0.155	0.00199	0.6	5.68	0.393	4.98
2	0.15625	0.057	0.135	0.00175	0.65	5.47	0.39	10
3	0.13352	0.047	0.118	0.00148	0.7	5.77	0.531	23.06