Table 3 Basic properties of the PF resins
From: Synthesis and characterization of green phenolic resin with olive oil mill wastewater
Resin type | OMW substitution level (wt%) | pH (20° C) | Viscosity (25° C, cPs) | Free formaldehyde (%) |
|---|---|---|---|---|
PF (reference) | 0 | 11.90 | 320 | 0.11 |
PF10 | 10 | 11.74 | 365 | 0.12 |
PF20 | 20 | 11.60 | 390 | 0.19 |
PF30 | 30 | 11.04 | 420 | 0.23 |
PF40 | 40 | 10.67 | 480 | 0.38 |