Pseudorotaxane complexes between β-CD and mPEG derivatives bearing a carboxylic acid function (mPEG. COOH) were synthesized and investigated for their dispersing properties in a cement-based mortar. The formation of mPEG. COOH derivatives and their pseudorotaxanes was investigated by 1D nuclear magnetic resonance, diffusion ordered spectroscopy, and thermogravimetric analysis experiments. Mortar tests clearly indicate that mPEG.COOH@β-CD-interpenetrated supramolecules show excellent dispersing abilities. In addition, the supramolecular complexes show a retarding effect, analogously to other known β-CD-based superplasticizers in which the β-CD is covalently grafted on a polymeric backbone.
Poly(Ethylene Glycol)/β-Cyclodextrin pseudorotaxane complexes as sustainable dispersing and retarding materials in a cement-based mortar
Capacchione C.;Della Sala Paolo.;Quaratesi I.;Iannece P.;Neri P.;Talotta C.;Gaeta C.
2021-01-01
Abstract
Pseudorotaxane complexes between β-CD and mPEG derivatives bearing a carboxylic acid function (mPEG. COOH) were synthesized and investigated for their dispersing properties in a cement-based mortar. The formation of mPEG. COOH derivatives and their pseudorotaxanes was investigated by 1D nuclear magnetic resonance, diffusion ordered spectroscopy, and thermogravimetric analysis experiments. Mortar tests clearly indicate that mPEG.COOH@β-CD-interpenetrated supramolecules show excellent dispersing abilities. In addition, the supramolecular complexes show a retarding effect, analogously to other known β-CD-based superplasticizers in which the β-CD is covalently grafted on a polymeric backbone.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
