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. 2016 Apr 23;8(4):162. doi: 10.3390/polym8040162

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© 2016 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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Plot of the intensity ratio $I_{1} / I_{3}$ as a function of temperature for PNNPAM microgel solutions with different concentrations (left). Additionally, the concentration dependent change in $I_{1} / I_{3}$ for the swollen and collapsed microgel is shown (right).