# Swelling and shrinking kinetics of a lamellar gel phase

Source: [Swelling and shrinking kinetics of a lamellar gel phase](<https://www.sota2.com/research/paper/68fa2a531e209131ce83c910>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-28T13:53:09.366Z

Authors: David J Fairhurst, Mark E Baker, Neil Shaw, Stefan U. Egelhaaf

Published: 2008-04-07T15:05:41.000Z

## Abstract

We investigate the swelling and shrinking of L\_beta lamellar gel phases composed of surfactant and fatty alcohol after contact with aqueous poly(ethylene-glycol) solutions. The height change $\\Delta h(t)$ is diffusion-like with a swelling coefficient, S: $\\Delta h = S \\sqrt{t}$. On increasing polymer concentration we observe sequentially slower swelling, absence of swelling, and finally shrinking of the lamellar phase. This behavior is summarized in a non-equilibrium diagram and the composition dependence of S quantitatively described by a generic model. We find a diffusion coefficient, the only free parameter, consistent with previous measurements.

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/0804.1052>)

[PDF](<https://arxiv.org/pdf/0804.1052.pdf>)