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

Table 2

Matrix and results for extreme vertices mixing design (mass fraction).

Number						pH	(g/cm^3)	Rs (%)
1	0.04	0.004	0.08	0.0003	0.8757	6.6	0.795	59.77
2	0.3	0.004	0.08	0.0003	0.6157	5.87	nm	42.35
3	0.04	0.03	0.08	0.0003	0.8497	5.15	ng	ng
4	0.3	0.03	0.08	0.0003	0.5897	4.32	1.129	42.56
5	0.04	0.004	0.2	0.0003	0.7557	6.53	0.881	59.18
6	0.3	0.004	0.2	0.0003	0.4957	5.8	0.547	4.86
7	0.04	0.03	0.2	0.0003	0.7297	4.86	ng	ng
8	0.3	0.03	0.2	0.0005	0.4695	4.84	0.543	4.29
9	0.3	0.03	0.2	0.0003	0.4697	4.36	0.584	4.98
10	0.04	0.004	0.08	0.02	0.856	8.47	nm	52.87
11	0.3	0.004	0.08	0.02	0.596	7.85	0.656	35.77
12	0.04	0.03	0.08	0.02	0.83	8.65	nm	49.17
13	0.3	0.03	0.1805	0.02	0.4695	7.64	1.091	20.69
14	0.3	0.03	0.08	0.02	0.57	7.73	0.770	35.05
15	0.04	0.004	0.2	0.02	0.736	8.53	nm	54.24
16	0.3	0.0105	0.2	0.02	0.4695	7.17	1.098	22.44
17	0.3	0.004	0.2	0.02	0.476	7.15	1.151	22.23
18	0.2805	0.03	0.2	0.02	0.4695	7.15	1.188	22.70
19	0.04	0.03	0.2	0.02	0.71	8.2	nm	54.18
20	0.04	0.004	0.08	0.0003	0.8757	6.25	0.877	59.04

nm: not measurable; ng: not gel formation.