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A platform for research: civil engineering, architecture and urbanism
Partially sulfonated polystyrenes: A new gypsum superplasticizer
https://orcid.org/0000-0002-0821-9096
Abstract Calcium sulfate hemihydrate is widely used for gypsum product fabrication; however, it requires superplasticizers to improve its fluidity and workability. In this study, we aimed to develop a novel superplasticizer based on partially sulfonated polystyrene (PStSS-f SS) for calcium sulfate hemihydrate. We synthesized PStSS-f SS by polymerization of styrene and sodium 4-styrenesulfonate and compared its performance with polynapthalene sulfonate (PNS) in terms of fluidity, zeta potential, hydration rate, and water resistance. PStSS-f SS exhibited higher fluidity than PNS without hydration delay of hemihydrate. The higher fluidity was attributed to the enhanced polymer adsorption on the hemihydrate surface because of the hydrophobic units. PStSS-f SS also imparted better water-resist properties to the gypsum products. PStSS-f SS is confirmed as a better superplasticizer than PNS for calcium sulfate hemihydrate, providing higher fluidity and improved water resistance.
Graphical Abstract Display Omitted
Highlights PStSS is a novel superplasticizer for CaSO4 hemihydrates. PStSS improves hemihydrate slurry fluidity over PNS. Lower sulfonate content in PStSS increases fluidity. PStSS enhances the water resistance of gypsum products.
Partially sulfonated polystyrenes: A new gypsum superplasticizer
https://orcid.org/0000-0002-0821-9096
Abstract Calcium sulfate hemihydrate is widely used for gypsum product fabrication; however, it requires superplasticizers to improve its fluidity and workability. In this study, we aimed to develop a novel superplasticizer based on partially sulfonated polystyrene (PStSS-f SS) for calcium sulfate hemihydrate. We synthesized PStSS-f SS by polymerization of styrene and sodium 4-styrenesulfonate and compared its performance with polynapthalene sulfonate (PNS) in terms of fluidity, zeta potential, hydration rate, and water resistance. PStSS-f SS exhibited higher fluidity than PNS without hydration delay of hemihydrate. The higher fluidity was attributed to the enhanced polymer adsorption on the hemihydrate surface because of the hydrophobic units. PStSS-f SS also imparted better water-resist properties to the gypsum products. PStSS-f SS is confirmed as a better superplasticizer than PNS for calcium sulfate hemihydrate, providing higher fluidity and improved water resistance.
Graphical Abstract Display Omitted
Highlights PStSS is a novel superplasticizer for CaSO4 hemihydrates. PStSS improves hemihydrate slurry fluidity over PNS. Lower sulfonate content in PStSS increases fluidity. PStSS enhances the water resistance of gypsum products.
Partially sulfonated polystyrenes: A new gypsum superplasticizer
https://orcid.org/0000-0002-0821-9096
Abstract Calcium sulfate hemihydrate is widely used for gypsum product fabrication; however, it requires superplasticizers to improve its fluidity and workability. In this study, we aimed to develop a novel superplasticizer based on partially sulfonated polystyrene (PStSS-f SS) for calcium sulfate hemihydrate. We synthesized PStSS-f SS by polymerization of styrene and sodium 4-styrenesulfonate and compared its performance with polynapthalene sulfonate (PNS) in terms of fluidity, zeta potential, hydration rate, and water resistance. PStSS-f SS exhibited higher fluidity than PNS without hydration delay of hemihydrate. The higher fluidity was attributed to the enhanced polymer adsorption on the hemihydrate surface because of the hydrophobic units. PStSS-f SS also imparted better water-resist properties to the gypsum products. PStSS-f SS is confirmed as a better superplasticizer than PNS for calcium sulfate hemihydrate, providing higher fluidity and improved water resistance.
Graphical Abstract Display Omitted
Highlights PStSS is a novel superplasticizer for CaSO4 hemihydrates. PStSS improves hemihydrate slurry fluidity over PNS. Lower sulfonate content in PStSS increases fluidity. PStSS enhances the water resistance of gypsum products.
Partially sulfonated polystyrenes: A new gypsum superplasticizer
Kim, Hanyoung (author) / Mohanty, Aruna Kumar (author) / Lee, Seoyoung (author) / Kwon, Minho (author) / Chang, Taihyun (author) / Jeon, Heung Bae (author) / Paik, Hyun-jong (author)
2024-01-30
Article (Journal)
Electronic Resource
English
Partially sulfonated polystyrenes: A new gypsum superplasticizer
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