Assertion: hydroxymethylated lignin | /r/HasProperty | %l
Facets:
Source sentences:
text: A total of 11lignin-phenol formaldehyde (LPF) resins, as indicated in Table 1,were prepared by varying the replacement percentage of phenol by hydroxymethylated lignin (%L) between 20and50%, the mass ratio of formaldehyde/(phenol+lignin)[F/(P+ L) between 1.8 and 2.6,and the ratio of sodium hydroxide/(phenol plus lignin)[S/(P+L)] between 1.0 and 1.4.A 2x2x2 factorial design with a three repeated central points was applied in order to quantify the effect of those parameters on the resins properties.