# Molecular Insights into the Motion of Oil Droplets in Aqueous Solutions of Ester- and Amide-Containing Cationic Surfactants

https://mdr.nims.go.jp/datasets/09dd0e03-520f-4e74-827c-3bc606706df2

## File

- [1-s2.0-S0167732225005197-main.pdf](https://mdr.nims.go.jp/filesets/acddb879-aa03-4bf5-8436-164e31074e3c/download) ([Detail](https://mdr.nims.go.jp/filesets/acddb879-aa03-4bf5-8436-164e31074e3c.md))

## Id

09dd0e03-520f-4e74-827c-3bc606706df2

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-03-16T23:19:48.702433Z

## Updated at

2025-03-26T08:25:46.026246Z

## Published at

2025-03-26T08:25:46.846375Z

## Doi



## First published url

https://doi.org/10.1016/j.molliq.2025.127352

## Date published

2025-03-10

## Recorded date published

2025-5

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Molecular Insights into the Motion of Oil Droplets in Aqueous Solutions of
    Ester- and Amide-Containing Cationic Surfactants
  title_type: original
  lang: en

## Description

- description: The study of self-propelled motion in soft matter systems has garnered
    significant interest owing to its potential applications in microfluidics, soft
    robotics, and autonomous system design. Understanding the molecular mechanisms
    underlying motility is crucial for advancing these applications. This study investigates
    the self-propelled motion of lauronitrile oil droplets in aqueous surfactant solutions,
    focusing on the impact of different surfactant molecular structures on droplet
    dynamics. This study compares surfactants with ester and amide linkages, highlighting
    their critical role in modulating interfacial tension and driving Marangoni convection,
    a key factor behind droplet movement. Surfactants with ester linkages exhibit
    a high affinity for lauronitrile and rapidly adsorb at the oil–water interface,
    generating strong Marangoni flows and driving fast droplet motion. In contrast,
    amide-containing surfactants exhibit slower adsorption and weaker interactions
    with lauronitrile, leading to reduced or absent motion. These findings provide
    new insights into the molecular mechanisms underlying the self-propelled droplet
    behavior in non-equilibrium systems and contribute to a deeper understanding of
    self-organizing phenomena.
  description_type: abstract
  lang: eng

## Creator

- name: Kazuki Ueno
  role: author
  organization: Keio University
- name: Yuuki Ishiwatari
  role: author
  organization: Keio University
- name: Ken Sasaki
  role: author
  organization: Keio University
- name: Tomoya Kojima
  role: author
  organization: Keio University
- name: Atsuro Takai
  role: author
  orcid: https://orcid.org/0000-0003-3457-3352
  organization: National Institute for Materials Science
  department: Research Center for Macromolecules and Biomaterials/Macromolecules Field/Molecular
    Design and Function Group
  ror: https://ror.org/026v1ze26
- name: Kouichi Asakura
  role: author
  organization: Keio University
- name: Noriyoshi Arai
  role: author
  organization: Keio University
- name: Taisuke Banno
  role: author
  organization: Keio University

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Self-propelled motion
  schema: not_defined
- subject: Oil droplet
  schema: not_defined
- subject: Cationic surfactant
  schema: not_defined
- subject: Intermolecular interaction
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: JOURNAL OF MOLECULAR LIQUIDS
  issn: '01677322'
  volume: '426'
  article_number: '127352'

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## Specimen



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## Fileset

- id: acddb879-aa03-4bf5-8436-164e31074e3c
  filename: 1-s2.0-S0167732225005197-main.pdf
  content_type: application/pdf
  size: 5059950
  md5: 021ff5a883e1596398f8cdf857cb0475

## Thumbnail

fileset_id: acddb879-aa03-4bf5-8436-164e31074e3c
filename: 1-s2.0-S0167732225005197-main.pdf