EAS | Time (months) | ||||||||
---|---|---|---|---|---|---|---|---|---|
T0 | 1 | 3 | 6 | 9 | 12 | 18 | 24 | ||
4 °C | Particle size | 104 ± 2 | 104 ± 2 | 101 ± 3 | 105 ± 1 | 104 ± 2 | 105 ± 2 | 107 ± 2 | 106 ± 2 |
Zeta potential | −38.8 ± 0.1 | −38.3 ± 0.4 | − 38.5 ± 0.2 | − 38.8 ± 0.2 | − 38.7 ± 0.2 | −38.5 ± 0.2 | − 38.7 ± 0.02 | −38.3 ± 0.3 | |
pH | 6.8 ± 0.1 | 6.7 ± 0.2 | 6.8 ± 0.1 | 6.6 ± 0.3 | 6.8 ± 0.1 | 6.8 ± 0.1 | 6.7 ± 0.3 | 6.7 ± 0.2 | |
Viscosity | 2.01 ± 0.14 | 2.01 ± 0.21 | 1.90 ± 0.17 | 1.94 ± 0.17 | 2.04 ± 0.15 | 2.11 ± 0.01 | 1.99 ± 0.04 | 2.03 ± 0.12 | |
25 °C | Particle size | 104 ± 2 | 103 ± 3 | 109 ± 1 | 114 ± 2 | 141 ± 9 | ND | ND | ND |
Zeta potential | −38.3 ± 0.1 | −38.4 ± 0.5 | −38.7 ± 0.3 | −38.5 ± 0.5 | −35.4 ± 0.4 | ND | ND | ND | |
pH | 6.8 ± 0.2 | 6.5 ± 0.3 | 6.8 ± 0.1 | 6.5 ± 0.3 | 6.6 ± 0.2 | ND | ND | ND | |
Viscosity | 2.01 ± 0.05 | 2.04 ± 0.01 | 2.24 ± 0.23 | 2.17 ± 0.05 | 2.43 ± 0.22 | ND | ND | ND | |
37 °C | Particle size | 105 ± 2 | 107 ± 2 | 115 ± 2 | 157 ± 12 | ND | ND | ND | ND |
Zeta potential | −38.6 ± 0.3 | −38.4 ± 0.2 | −36.9 ± 0.3 | −35.8 ± 0.4 | ND | ND | ND | ND | |
pH | 6.8 ± 0.2 | 6.5 ± 0.3 | 6.6 ± 0.2 | 6.7 ± 0.2 | ND | ND | ND | ND | |
Viscosity | 2.03 ± 0.11 | 2.11 ± 0.18 | 2.34 ± 0.19 | 2.55 ± 0.38 | ND | ND | ND | ND |