All monomers in a polymer are covalently bonded
The claim that all monomers in a polymer are covalently bonded is false, as supramolecular polymers and ionomers rely heavily on noncovalent interactions such as hydrogen bonding and ionic forces to link or organize monomer units.
The claim states an absolute rule about polymers that is contradicted by the existence of supramolecular polymers and ionomeric systems. These classes of polymers rely on non-covalent bonds (such as hydrogen bonds, ionic interactions, and hydrophobic forces) to form and maintain their polymeric networks or assemblies. Therefore, the claim is incorrect.
Jacqueline L Warren, Peter A. Dykeman‐Bermingham, A. S. Knight. Controlling amphiphilic polymer folding beyond the primary structure with protein-mimetic di(phenylalanine). 2021. https://doi.org/10.26434/CHEMRXIV.14727924.V1
Paper 0 discusses synthetic polymers featuring noncovalent interactions, such as hydrogen bonding and hydrophobic forces, alongside the polymer backbone.
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M Davletbaeva I, Sazonov OO. Macromolecular and Supramolecular Organization of Ionomers.. 2025. https://doi.org/10.3390/polym17233188
Paper 5 details ionomers where ionic interactions and reversible clustering facilitate specific polymer properties.
Yingxian Ma, Liqiang Huang, Zhi Zhu, Yuliang Du, J. Lai, Jianchun Guo. A Supramolecular Thickener Based on Non-Covalent Enhancement Mechanism. 2021. https://doi.org/10.2118/204299-ms
Paper 6 describes a supramolecular polymer system whose structure and properties are driven by multiple hydrogen bonding and physical entanglements rather than purely covalent monomer linkages.
Wang J, Xiao X, Xiao X, Sun J, Kwok RTK, Lam JWY, Tang BZ. Supramolecular Zwitterionic Polymers: Dynamic Traits Imparted by Ionic Interactions.. 2026. https://doi.org/10.1021/jacsau.5c01400
Paper 10 examines supramolecular ionic polymers whose dynamic traits arise from ionic interactions.
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