Dispersing and Retarding Properties of Water-Soluble Tetrasulfonate Resorcin[4]arene and Pyrogallol[4]arene Macrocycles in Cement-Based Mortar | Zendy

Clotilde Capacchione | Zendy; Davide Picariello | Zendy; Paolo Della Sala | Zendy; Carmen Talotta | Zendy; Placido Neri | Zendy; Immacolata Bruno | Zendy; Antonio Pauciulo | Zendy; Andrea Roberta Bartiromo | Zendy; Rocco Gliubizzi | Zendy; Carmine Gaeta | Zendy

Open Access

Dispersing and Retarding Properties of Water-Soluble Tetrasulfonate Resorcin[4]arene and Pyrogallol[4]arene Macrocycles in Cement-Based Mortar

Author(s) -

Clotilde Capacchione,

Davide Picariello,

Paolo Della Sala,

Carmen Talotta,

Placido Neri,

Immacolata Bruno,

Antonio Pauciulo,

Andrea Roberta Bartiromo,

Rocco Gliubizzi,

Carmine Gaeta

Publication year - 2020

Publication title -

acs omega

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.779

H-Index - 40

ISSN - 2470-1343

DOI - 10.1021/acsomega.0c01837

Subject(s) - pyrogallol , dispersant , superplasticizer , chemistry , cement , sulfate , mortar , water soluble , chemical engineering , organic chemistry , polymer chemistry , materials science , composite material , dispersion (optics) , physics , optics , engineering

Water-soluble tetrasulfonate resorcin[4]arene ( 1a and 1c ) and pyrogallol[4]arene ( 1b ) macrocycles were synthesized and investigated for their dispersing properties in cement-based mortars. Mortar tests clearly show that these polyhydroxylated macrocycles (nonpolymeric) work as cement dispersants. Setting time determinations indicate that the macrocycles 1a and 1b show a retarding effect that is reminiscent of the behavior of superplasticizers (SPs) functionalized with polyhydroxylated β-CDs. Finally, the addition of sulfate anions to the cement paste does not affect the dispersing abilities of 1b , probably due to the sulfate anion capture by H-bonding interactions with its OH groups at the upper rim.

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