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. 2020 Jun 22;12(6):1393. doi: 10.3390/polym12061393

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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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(a) Chemical structures of the compounds: permethylated amino βCD (PMeAmβCD), adamantane amine (AdAm), hexamethylene diisocyanate (HDI), tetraethylene glycol (TEG), and dibutyltin diacetate (DBTBA). Chemical structures of thermoplastic polyurethane (TPU) derivatives: (b) host-guest (HG) TPU (HG(x)), (c) linear TPU (PU), and (d) guest TPU (G(x)). The proportions of the host and guest units in TPU are indicated by “x” (HG(x) and G(x)), which represent the mol% of the PMeAmβCD and AdAm units.