Multivalent Allylammonium-Based Cross-Linkers for the Synthesis of Homogeneous, Highly Swelling Diallyldimethylammonium Chloride Hydrogels.

ABSTRACT: N,N'-methylenebisacrylamide (BIS) is a very popular cross-linker for the radical polymerisation in water. It is highly reactive but prone to alkaline hydrolysis and suffers from a low solubility. This study shows that with slow polymerising systems such as N,N-diallyldimethylammonium chloride, only inhomogeneous networks are formed. As a consequence, gels with very low cross-linking densities, i.e., high swelling capacities, disintegrate during the swelling test and firm, coherent gels are not accessible due to the solubility limit. A promising alternative are multivalent tetraallyl-based compounds, of which tetraallylammonium bromide (TAAB), N,N,N',N'-tetraallylpiperazinium dibromide (TAPB) and N,N,N',N'-tetraallyltrimethylene dipiperidine dibromide (TAMPB) are the subject of this study.

SUBMITTER: Mrohs TB 

PROVIDER: S-EPMC8871358 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature