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The crucial role of a protein corona in determining the aggregation kinetics and colloidal stability of polystyrene nanoplastics

Water Research 2020 129 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 45 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Xing Li, Willie J.G.M. Peijnenburg Hao Qiu, Erkai He, Erkai He, Erkai He, Erkai He, Erkai He, Erkai He, Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Xing Li, Xing Li, Hao Qiu, Xing Li, Hao Qiu, Hao Qiu, Hao Qiu, Erkai He, Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Erkai He, Erkai He, Erkai He, Erkai He, Erkai He, Hao Qiu, Ke Jiang, Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Erkai He, Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Hao Qiu, Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Hao Qiu, Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Hao Qiu, Erkai He, Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Erkai He, Willie J.G.M. Peijnenburg Hao Qiu, Hao Qiu, Hao Qiu, Hao Qiu, Erkai He, Erkai He, Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Hao Qiu, Erkai He, Erkai He, Erkai He, Hao Qiu, Hao Qiu, Hao Qiu, Hao Qiu, Hao Qiu, Hao Qiu, Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Hao Qiu, Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Hao Qiu, Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Hao Qiu, Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Hao Qiu, Willie J.G.M. Peijnenburg Hao Qiu, Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Hao Qiu, Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Hao Qiu, Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Hao Qiu, Willie J.G.M. Peijnenburg Hao Qiu, Hao Qiu, Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Hao Qiu, Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg Willie J.G.M. Peijnenburg

Summary

Time-resolved dynamic light scattering was used to study how protein coronas — protein layers that form on nanoplastics in biological or environmental fluids — control the aggregation kinetics and colloidal stability of polystyrene nanoplastics. Protein identity and concentration profoundly shifted nanoplastic behavior, with implications for how these particles move and persist in natural water systems.

Polymers

Nanosized plastics are considered as being a class of contaminants of emerging concern. The interaction between nanoplastics and proteins may significantly influence the environmental behavior and fate of nanoplastics. Here, we employed time-resolved dynamic light scattering to explore the aggregation kinetics and stability of polystyrene nanoparticles (PSNPs) exposed to a model globular protein (bovine serum albumin, BSA) in the presence of a number of typical electrolytes (NaCl, CaCl, and NaSO). With the increase of the BSA concentration, the amount of BSA adsorbed on the surface of negatively charged PS-Bare (non-modified) and PS-COOH (carboxyl-modified) increased, resulting in higher dispersibility in comparison to the treatment without BSA. This stabilization effect derived from the protein corona structure was revealed by combining characterization techniques and visualized by transmission electron microscopy. Upon addition of NaCl and CaCl, the aggregation of positively charged PS-NH (amino-modified) was inhibited by the BSA addition possibly due to the screening of the attractive patch-charge force and the competition for adsorption of cations between PS-NH and the protein. When NaSO was present in the suspension, BSA addition significantly increased PS-NH aggregation rate due to patch-charge attraction and the high performance of SO in attaching to particles and charge neutralization. These findings shed light on the interactions between PSNPs and proteins, which were shown to vary with the composition of the surface coatings of PSNPs. The newly gained knowledge will help us to forecast the transport and fate of PSNPs in natural aqueous systems.

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