Thermoacoustical analysis of solutions of poly(ethylene glycol) 200 through H-bond complex formation

► The presence of two electronegative elements viz. nitrogen and oxygen in its molecular architecture, ethanolamine has greater extent of interaction with PEG. ► Ethanolamine and m-cresol may be involved in a complex type of network of hydrogen bonding. ► Ethanolamine has greater extent of interaction with PEG than m-cresol and aniline particularly with least magnitude from aniline, where electron availability is least because of delocalization. ► The difference in molar volume between the components of the mixture control the mixture properties.