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The swelling ratio of hydrogels was assessed by weighting the mass of fully hydrated and dried hydrogel. The swollen cylindrical-shaped samples as described were fist weighted as Ws. Then, the samples were rinsed with DI water and dried in oven for 1 day and weighted as Wd. The swelling ratio of the samples was calculated by the equation as below:
All data recorded were averaged from three repeated experiments.
Copyright and License information: ©2019 by the authors.
Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
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