Notably, this nonmonotonicity has not been observed in previous experiments, only an increasing trend is reported independently of the charge fraction. , An increasing bulk modulus for a salt-dominated regime is intuitive because higher values c s result in higher equilibrium polymer concentrations, leading to an increased polymeric contribution to the osmotic pressure.
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Effect of Different Network Topologies on Swelling and Mechanical Properties of Polyelectrolyte Hydrogels.
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