biostudies-literatureKatana BConselho Nacional de Desenvolvimento Cient?fico e Tecnol?gicoNemzeti Kutat?si Fejleszt?si ?s Innov?ci?s HivatalMinist?rio da Justi?a e Seguran?a P?blicaCoordena??o de Aperfei?oamento de Pessoal de N?vel Superior6957-6965https://www.ebi.ac.uk/biostudies/studies/S-EPMC11264265biostudies-literatureUnknown128(28)The effect of polyphosphate (polyP) adsorption on the colloidal properties of disc-shaped laponite (LRD) particles was examined in aqueous dispersions with a focus on elucidating the interparticle forces that govern the colloidal stability of the systems. The charge and aggregation rate data of bare LRD exhibited an ionic strength-dependent trend, confirming the presence of double-layer repulsion and van der Waals attraction as major surface interactions. The charge of LRD particles significantly increased in magnitude at elevated polyP concentrations as a result of polyP adsorption and subsequent overcharging of the positively charged sites on the edges of the LRD discs. A transition from stable to unstable LRD colloids was observed with increasing polyP doses indicating the formation of The journal of physical chemistry. BThe Impact of Polyphosphates on the Colloidal Stability of Laponite Particles.PMC11264265Finance Code 001TKP2021-NVA-19406079/2022-6SNN14225808000.012516/2019-27309754/2022-4de Oliveira RJSchneider RKatana BSzilagyi IBaptista JfalseThe Impact of Polyphosphates on the Colloidal Stability of Laponite Particles.The effect of polyphosphate (polyP) adsorption on the colloidal properties of disc-shaped laponite (LRD) particles was examined in aqueous dispersions with a focus on elucidating the interparticle forces that govern the colloidal stability of the systems. The charge and aggregation rate data of bare LRD exhibited an ionic strength-dependent trend, confirming the presence of double-layer repulsion and van der Waals attraction as major surface interactions. The charge of LRD particles significantly increased in magnitude at elevated polyP concentrations as a result of polyP adsorption and subsequent overcharging of the positively charged sites on the edges of the LRD discs. A transition from stable to unstable LRD colloids was observed with increasing polyP doses indicating the formation of 2024-01-01T00:00:00Z2024 Jul2025-06-01T01:17:39.409Z2025-06-01T01:17:39.409ZS-EPMC112642653898000910.1021/acs.jpcb.4c03193