Physicochemical Analysis of Coacervates and Premicellar Aggregates in Amino Acid-Based Surfactant Systems

Abstract

Coacervates are ionic complexes that provide lubrication during hair washing. In this study, hair shampoo models containing amino acid-based surfactants, including sodium lauroyl methylaminopropionate (LMA), were prepared to compare their composition ratios and rheological properties. Mixtures of coacervates and premicellar aggregates precipitated from diluted LMA solutions exhibited viscous behavior. Furthermore, the premicellar aggregates enhanced the shear and strain resistance of the coacervates by forming crosslinks with surfactants and polymers. The use of coacervates and premicellar aggregates represents a new strategy for enhancing product value by providing superior lubrication during hair washing.

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BibTeX RIS

BibTeX

@article{hiranuma2026physicochemical,
  title = {{Physicochemical Analysis of Coacervates and Premicellar Aggregates in Amino Acid-Based Surfactant Systems}},
  author = {Takenaga Hiranuma and Yoshiaki Yamamoto and Yoshimune Nonomura},
  journal = {Journal of Oleo Science},
  year = {2026},
  month = oct,
  doi = {10.5650/jos.ess26077},
  url = {https://www.jstage.jst.go.jp/article/jos/75/10/75_jos.ess26077/_article},
  note = {CC BY-SA},
}

RIS

TY  - JOUR
TI  - Physicochemical Analysis of Coacervates and Premicellar Aggregates in Amino Acid-Based Surfactant Systems
AU  - Takenaga Hiranuma
AU  - Yoshiaki Yamamoto
AU  - Yoshimune Nonomura
PY  - 2026
DA  - 2026/10/07
JO  - Journal of Oleo Science
DO  - 10.5650/jos.ess26077
UR  - https://www.jstage.jst.go.jp/article/jos/75/10/75_jos.ess26077/_article
AB  - Coacervates are ionic complexes that provide lubrication during hair washing. In this study, hair shampoo models containing amino acid-based surfactants, including sodium lauroyl methylaminopropionate (LMA), were prepared to compare their composition ratios and rheological properties. Mixtures of coacervates and premicellar aggregates precipitated from diluted LMA solutions exhibited viscous behavior. Furthermore, the premicellar aggregates enhanced the shear and strain resistance of the coacervates by forming crosslinks with surfactants and polymers. The use of coacervates and premicellar aggregates represents a new strategy for enhancing product value by providing superior lubrication during hair washing.
SN  - 1347-3352
SN  - 1345-8957
ER  -

Abstract

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