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Proceedings Paper

Modeling of hydrogel swelling in buffered solutions
Author(s): Sudipto K. De; Richard R. Ohs; Narayan R. Aluru
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Paper Abstract

In this paper, we present a meshless Finite Cloud Method (FCM) for the solution of time-dependent partial differential equations governing ionic gel swelling. Using a point distribution, FCM constructs interpolation functions without assuming any connectivity between points. A collocation approach enforces the unknowns at every point to satisfy either the governing equation of the boundary conditions. To validate the model, a cylindrical hydrogel was fabricated and subjected to step changes in solution pH to characterize the hydrogel's dynamic behavior. The hydrogel's equilibrium behavior was matched using a thermodynamic model. Numerical results show good agreement with experimental data.

Paper Details

Date Published: 16 July 2001
PDF: 7 pages
Proc. SPIE 4329, Smart Structures and Materials 2001: Electroactive Polymer Actuators and Devices, (16 July 2001); doi: 10.1117/12.432657
Show Author Affiliations
Sudipto K. De, Univ. of Illinois/Urbana-Champaign (United States)
Richard R. Ohs, Univ. of Illinois/Urbana-Champaign (United States)
Narayan R. Aluru, Univ. of Illinois/Urbana-Champaign (United States)

Published in SPIE Proceedings Vol. 4329:
Smart Structures and Materials 2001: Electroactive Polymer Actuators and Devices
Yoseph Bar-Cohen, Editor(s)

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