Experimental analysis reveals enhanced mechanical properties in interpolymer complexes using sodium carboxymethylcellulose and polyacrylamide, suggesting improved viscoelastic performance.
Abstract In this study, the rheological and mechanical properties of aqueous polymer solutions and interpolymer complexes (IPCs) composed of sodium carboxymethylcellulose (Na-CMC) and polyacrylamide (PAA) were investigated using the Anton Paar MCR 92 rotational rheometer. The experiments included measurements of torque, shear stress, and calculations of the elastic modulus (G) across a wide angular frequency range (0.314–628 rad/s). The results demonstrated that IPCs, particularly the Na-CMC:PAA composition at an 80:20 ratio, showed substantially higher torque values (up to 56.287 mN·m) and G modulus (up to 13,796 Pa) compared to individual Na-CMC or PAA solutions. This increase is attributed to enhanced intermolecular interactions, including hydrogen bonding and electrostatic forces, forming a more cohesive and elastic polymer network. These findings suggest the high potential of such IPCs in advanced materials requiring superior viscoelastic performance. PACS: 62.20.de
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