SYNTHESIS OF A NEW SUPRAMOLECULAR POLYMERIC SYSTEM BASED ON β-CYCLODEXTRIN AND BISPHENOL S

Nowadays bisphenols S based polymers are widely used as substitute of the more dangerous bisphenol A. They are commonly employed in different fields like food packaging, in curing fast-drying epoxy resin adhesives, for harden plastics and for paper production. Recently, bisphenol S has been recognized as endocrine disruptor with high persistence in aqueous environments. Furthermore, the formation of 2,4'-dihydroxybiphenyl sulfone (2,4'-BPS) as byproduct of the synthesis of bisphenol S, increases the associated pollution issue. As it is known, β-cyclodextrin (β-CD) can acts as host with 4,4'-dihydroxydiphenyl sulfone (4,4'-BPS), so the use of supramolecular system based on cyclodextrins could pave the way to the development of more sustainable and eco-friendly products. This study evaluated the β-CD's capacity to bind the two isomeric dihydroxy biphenyl sulfones in solution, solid, and gas phases. In addition, a newly supramolecular system based on β-cyclodextrin and a bisphenol S polymer has been developed. The formation of the supramolecular polymeric system was investigated using 1D NMR and FT-IR analysis.