Publikation:

Evaporative phase separation in polymer microdroplets with confinement and internal flow

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Datum

2024

Autor:innen

Kumar, Mukesh
Pugalneelam Parameswaran, Senthan
Joshi, Prerak
Mampallil, Dileep

Herausgeber:innen

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URI (zitierfähiger Link)
http://nbn-resolving.de/urn:nbn:de:bsz:352-2-piz2j2xgvtb81
DOI (zitierfähiger Link)
https://doi.org/10.1016/j.jciso.2023.100101
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CC BY-NC-ND 4.0

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Open Access-Veröffentlichung
Open Access Gold

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Physik: Publikationen
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Published

Erschienen in

JCIS Open. Elsevier. 2024, 13, 100101. ISSN 2666-934X. Verfügbar unter: doi: 10.1016/j.jciso.2023.100101

Zusammenfassung

Evaporation can drive initially homogeneous multiphase liquid systems out of equilibrium to induce liquid-liquid phase separation (LLPS). Here, we demonstrate evaporative LLPS in microfluidic-generated emulsion microdroplets of polymer mixtures. The evaporation produces distinct polymer phases within the microdroplets. Phase separation occurs even with polymer combinations that do not form distinct phases in sessile droplet evaporation. We attribute this aspect to evaporation-driven solutal Marangoni flows and the interface capture accumulating the nuclei at the apex where the evaporation rate is the maximum. A fast coalescence and growth of the accumulated polymer nuclei occurs inside the droplets, unlike the capillary-flow-induced spread-out of the nuclei along the contact line in sessile drops. Our method of evaporation of the droplet cluster may facilitate studying LLPS in volume-limited environments and have implications for understanding LLPS in biological systems.

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
530 Physik

Schlagwörter

Liquid-liquid phase separation, Evaporation, Emulsion, Confinement, Marangoni flow

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ISO 690KUMAR, Mukesh, Maheshwar Reddy GOPU, Senthan PUGALNEELAM PARAMESWARAN, Prerak JOSHI, Dileep MAMPALLIL, 2024. Evaporative phase separation in polymer microdroplets with confinement and internal flow. In: JCIS Open. Elsevier. 2024, 13, 100101. ISSN 2666-934X. Verfügbar unter: doi: 10.1016/j.jciso.2023.100101
BibTex
@article{Kumar2024-04Evapo-71786,
  year={2024},
  doi={10.1016/j.jciso.2023.100101},
  title={Evaporative phase separation in polymer microdroplets with confinement and internal flow},
  volume={13},
  issn={2666-934X},
  journal={JCIS Open},
  author={Kumar, Mukesh and Gopu, Maheshwar Reddy and Pugalneelam Parameswaran, Senthan and Joshi, Prerak and Mampallil, Dileep},
  note={Article Number: 100101}
}
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