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Development of Dissipative Particle Dynamics framework for modeling hydrogels with degradable bonds

Published online by Cambridge University Press:  02 March 2020

Vaibhav Palkar
Affiliation:
Department of Materials Science and Engineering, Clemson University, Clemson, SC, 29634
Chandan K. Choudhury
Affiliation:
Department of Materials Science and Engineering, Clemson University, Clemson, SC, 29634
Olga Kuksenok*
Affiliation:
Department of Materials Science and Engineering, Clemson University, Clemson, SC, 29634
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Abstract

Controlled degradation of hydrogels enables several applications of these materials, including controlled drug and cell release applications and directed growth of neural networks. These applications motivate the need of a simulation framework for modeling controlled degradation in hydrogels. We develop a Dissipative Particle Dynamics (DPD) framework for hydrogel degradation. As a model hydrogel, we prepare a network formed by end-linking tetra-arm polyethylene glycol precursors. We model bond breaking during degradation of this hydrogel as a stochastic process. The fraction of degradable bonds follows first order degradation kinetics. We characterize the rate of mass loss during degradation process.

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Copyright © Materials Research Society 2020

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