Investigation of ouzo effect colloid formation via organosilica nanoparticles

Whittemore, James H.; Jones, Andrew; Mendon, Sharathkumar K.; Rawlins, James W.

doi:10.1007/s00396-015-3657-x

Cited by 3 publications

(1 citation statement)

References 36 publications

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“…NP formation in these methods has been modeled using classical nucleation theory 18 and spinodal decomposition, 19 both of which assume a uniformly mixed initial condition. However, in the case of NP formation from polymers, the system does not start from a homogeneous state due to the inability to reach complete molecular-level mixing after adding the nonsolvent but before particle formation begins.…”

Section: ■ Introductionmentioning

confidence: 99%

Particle Formation Mechanisms in the Nanoprecipitation of Polystyrene

et al. 2020

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Numerous precipitation methods for creating nanoparticle dispersions that are based on mixing a solution with a miscible nonsolvent have been developed. Here, we show that for polymer particles, the formation is highly dependent on the rate of mixing. We also demonstrate the importance of the glass transition of the polymers on particle formation. A simple model of droplet formation during mixing provides a satisfactory description of the observed dependence of particle size on polymer molecular weight, concentration, solvent ratio, and mixing conditions.

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Section: ■ Introductionmentioning

confidence: 99%

Particle Formation Mechanisms in the Nanoprecipitation of Polystyrene

et al. 2020

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Manufacturing of cellulose-based nano- and submicronparticles via different precipitation methods

et al. 2023

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Nanoprecipitation is one of the most popular methods for producing polymer nanoparticles. However, the reported results show a large variability. In order to provide a first-hand comparative study, we prepared cellulose-based nanoparticles via different nanoprecipitation methods. Here, the influence of the coagulating solvents acetone, N,N-dimethylacetamide and tetrahydrofuran on the size and shape of the particles via precipitation using dialysis was investigated. The influence of temperature and concentration was determined by dropwise addition of the coagulation medium. Then, via rapid solvent shifting, particles were prepared from cellulose acetates with different molecular masses and the cellulose acetate propionate and cellulose acetate butyrate derivatives in the concentration range of 1–20 mg mL− 1. Thereby, it was possible to prepare spherical particles in the range from 43 to 158 nm. Furthermore, the impact of the molecular weight of these derivatives on the obtained particle size distributions was determined. It is possible to obtain pure regenerated cellulose particles in the nanometer range by a deacetylation of the derivatives. In addition, the findings were used to directly convert cellulose from a DMAc/LiCl solvent system into regenerated cellulose nanoparticles with a size of 10 ± 3 nm. Graphical abstract

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