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. 2019 Dec 24;25(1):75. doi: 10.3390/molecules25010075

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© 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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Effect of calcium concentration and water content on the burst strength and extensibility of LMP films. (A) In films with identical degrees of methoxylation and a similar hydration state, the addition of calcium resulted in decreased burst strength. (B) The burst strength of the LMP films was generally less than that of HMP, regardless of the calcium concentration or water content. (C) Increasing the water content of LMP films (without calcium) resulted in a decreased burst strength, but increased extensibility. (D) Similar to burst strength, the extensibility of the HMP films was greater than that of LMP films, regardless of the calcium concentration or water content.