Modeling of ionic hydrogel kinetics in buffered solutions

Richard R. Ohs; K. De Sudipto; N. R. Aluru

Modeling of ionic hydrogel kinetics in buffered solutions

Richard R. Ohs, K. De Sudipto, N. R. Aluru

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In this paper, we present the meshless Finite Cloud Method (FCM) for the solution of a time-dependent partial differential equation governing ionic gel swelling. Using a point distribution, FCM constructs interpolation functions without assuming any connectivity between points. A collocation approach forces the unknowns at every point to satisfy the governing equation or boundary condition. 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.

Original language	English (US)
Title of host publication	2001 International Conference on Modeling and Simulation of Microsystems - MSM 2001
Editors	M. Laudon, B. Romanowicz
Pages	7-10
Number of pages	4
State	Published - Dec 1 2001
Event	2001 International Conference on Modeling and Simulation of Microsystems - MSM 2001 - Hilton Head Island, SC, United States Duration: Mar 19 2001 → Mar 21 2001

Publication series

Name	2001 International Conference on Modeling and Simulation of Microsystems - MSM 2001

Other

Other	2001 International Conference on Modeling and Simulation of Microsystems - MSM 2001
Country	United States
City	Hilton Head Island, SC
Period	3/19/01 → 3/21/01

Keywords

Experiments
Hydrogels
Meshless method
Simulation
Swelling

ASJC Scopus subject areas

Engineering(all)

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Ohs, R. R., De Sudipto, K., & Aluru, N. R. (2001). Modeling of ionic hydrogel kinetics in buffered solutions. In M. Laudon, & B. Romanowicz (Eds.), 2001 International Conference on Modeling and Simulation of Microsystems - MSM 2001 (pp. 7-10). (2001 International Conference on Modeling and Simulation of Microsystems - MSM 2001).

Modeling of ionic hydrogel kinetics in buffered solutions. / Ohs, Richard R.; De Sudipto, K.; Aluru, N. R.

2001 International Conference on Modeling and Simulation of Microsystems - MSM 2001. ed. / M. Laudon; B. Romanowicz. 2001. p. 7-10 (2001 International Conference on Modeling and Simulation of Microsystems - MSM 2001).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Ohs, RR, De Sudipto, K & Aluru, NR 2001, Modeling of ionic hydrogel kinetics in buffered solutions. in M Laudon & B Romanowicz (eds), 2001 International Conference on Modeling and Simulation of Microsystems - MSM 2001. 2001 International Conference on Modeling and Simulation of Microsystems - MSM 2001, pp. 7-10, 2001 International Conference on Modeling and Simulation of Microsystems - MSM 2001, Hilton Head Island, SC, United States, 3/19/01.

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AU - De Sudipto, K.

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N2 - In this paper, we present the meshless Finite Cloud Method (FCM) for the solution of a time-dependent partial differential equation governing ionic gel swelling. Using a point distribution, FCM constructs interpolation functions without assuming any connectivity between points. A collocation approach forces the unknowns at every point to satisfy the governing equation or boundary condition. 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.

AB - In this paper, we present the meshless Finite Cloud Method (FCM) for the solution of a time-dependent partial differential equation governing ionic gel swelling. Using a point distribution, FCM constructs interpolation functions without assuming any connectivity between points. A collocation approach forces the unknowns at every point to satisfy the governing equation or boundary condition. 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.

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KW - Simulation

KW - Swelling

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