What question did this study set out to answer?

To determine whether polyelectrolyte complexes formed from oppositely charged, fully water-soluble synthetic polymers lacking inherent surface activity can effectively stabilize oil-in-water emulsions.

December 12, 2017Soft MatterOpen Access

Emulsion stabilisation by complexes of oppositely charged synthetic polyelectrolytes

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Authors

ARAna Maria Bago RodriguezUniversity of Hull BBBernard P. BinksJiangnan University TSTomoko SekineThe University of Osaka

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Implication

Experimental study demonstrates that liquid coacervate droplets stabilize oil-in-water emulsions against coalescence, highlighting the critical role of interfacial wetting and spreading.

Key Points

To determine whether polyelectrolyte complexes formed from oppositely charged, fully water-soluble synthetic polymers lacking inherent surface activity can effectively stabilize oil-in-water emulsions.
Mixed cationic PDADMAC and weak anionic PAANa across various concentrations, mixing ratios, and pH levels to map complex coacervation and solid precipitate regimes.
Homogenized dodecane and other oils with the resulting polyelectrolyte complex dispersions to evaluate emulsion stability against coalescence and determine interfacial spreading coefficients.
Dispersions containing liquid coacervate droplets formed at low and high pH successfully stabilized oil-in-water emulsions against coalescence.
Dispersions containing solid particle complexes formed at intermediate pH failed to produce stable emulsions due to large precursor particle aggregation or excessive hydrophilicity.
Emulsion stability matched theoretical spreading coefficient predictions, with the coacervate phase fully engulfing droplet surfaces for certain oils while failing to spread on others.

Cite This Study

Rodriguez et al. (2017) studied this question.

synapsesocial.com/papers/6a02ccd359ea043e4c9e2ec8 https://doi.org/10.1039/c7sm01845b

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Implication

Experimental study demonstrates that liquid coacervate droplets stabilize oil-in-water emulsions against coalescence, highlighting the critical role of interfacial wetting and spreading.

Emulsion stabilisation by complexes of oppositely charged synthetic polyelectrolytes

Discussion

Member takes

Implication

Key Points

Cite This Study

Emulsion stabilisation by complexes of oppositely charged synthetic polyelectrolytes

Discussion

Member takes

Implication

Key Points

Cite This Study

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