A small increase in tan δ with frequency, which was more characteristic for the SWOP emulsion, corresponds to a faster increase in the viscous modulus ( Fig. 4b). This suggests a decrease in elasticity that may be explained by a weakening of the interactions between the droplets, leading to a weaker network structure and, consequently, destabilization of the system [26] and [27]. The tan δ of the o/w emulsion did not change significantly with increasing frequency, indicating that the o/w emulsion had a stronger network structure ( Fig. 4b), which is in correlation with the higher yield stress values obtained for the samples of o/w emulsion.
A small increase in tan δ with frequency, which was more characteristic for the SWOP emulsion, corresponds to a faster increase in the viscous modulus ( Fig. 4b). This suggests a decrease in elasticity that may be explained by a weakening of the interactions between the droplets, leading to a weaker network structure and, consequently, destabilization of the system [26] and [27]. The tan δ of the o/w emulsion did not change significantly with increasing frequency, indicating that the o/w emulsion had a stronger network structure ( Fig. 4b), which is in correlation with the higher yield stress values obtained for the samples of o/w emulsion.
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