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. 2020 May 29;12(6):1240. doi: 10.3390/polym12061240

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© 2020 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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Surface contact angle images of the PVC modified by cPAM: (a) PVC, (b) PVC/cPAM, (c) PVC/cPAM-3, (d) PVC/cPAM-6, (e) PVC/cPAM-9, (f) PVC/cPAM-12, and (g) PVC/cPAM-15.