Modern mixed plastic recycling approaches suffer from the immiscibility between chemically dissimilar polymers which exhibit macroscopic phase separation in a blend, yielding materials with poor physical properties. Polmer blend compatibilization is the process of improving the physical properties through the lowering of interfacial tension between immiscible phases. Previous work has shown that sulfonic acid-functionalized poly(n-butyl acrylate) (PnBA) and imidazole-functionalized poly(dimethylsiloxane) (PDMS) form an optically clear blend in otherwise immiscible mixtures of PnBA and PDMS, illustrating the role of ionic interactions as a powerful tool for blend compatibilization. This work focuses on building a comprehensive understanding of chain dynamics of ionically compatibilized blends, which will provide insight into the viscoelastic behavior relevant for melt processing. To study the effect of ionic interactions on the chain dynamics of a blend without phase separation from chemically dissimilar chains, polymers of the same backbone (i.e., PnBA) are functionalized with alkyl sulfonate and tertiary amine pendant chains through reversible addition-fragmentation chain-transfer copolymerization and blended on heat to generate ionic bonds via a quaternization reaction. Chemical modification of this system is tracked by nuclear magnetic resonance and Fourier transform infrared spectroscopies; and polymer molecular weight distributions are measured through size-exclusion chromatography. The thermal and viscoelastic properties of these blends are probed through differential scanning calorimetry and oscillatory rheology respectively. Overall, this project builds a foundation for understanding the complex thermal and viscoelastic behavior of ionically compatibilized blends, providing key insights into the role that ionic compatibilization has in the future of mixed plastic waste recycling.