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Issue 12, 2017
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Comment on “Relating side chain organization of PNIPAm with its conformation in aqueous methanol” by D. Mukherji, M. Wagner, M. D. Watson, S. Winzen, T. E. de Oliveira, C. M. Marques and K. Kremer, Soft Matter, 2016, 12, 7995

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Abstract

In a recent paper, Mukherji et al. describe the collapse of poly(N-isopropyl acrylamide) in methanol–water mixtures based on experiments and molecular dynamics simulations. The conclusion of their work is that chain collapse is dominated by enthalpic bridging interactions while entropic effects play no major role. Here we show that this claim arises from an improper interpretation of preferential binding and the corresponding thermodynamic data presented. When interpreted correctly, the data instead provide evidence for repulsive enthalpic interactions of methanol with the polymer, supporting the emerging view of entropic chain collapse.

Graphical abstract: Comment on “Relating side chain organization of PNIPAm with its conformation in aqueous methanol” by D. Mukherji, M. Wagner, M. D. Watson, S. Winzen, T. E. de Oliveira, C. M. Marques and K. Kremer, Soft Matter, 2016, 12, 7995

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Publication details

The article was received on 19 Sep 2016, accepted on 15 Feb 2017 and first published on 20 Feb 2017


Article type: Comment
DOI: 10.1039/C6SM02139E
Citation: Soft Matter, 2017,13, 2289-2291
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    Comment on “Relating side chain organization of PNIPAm with its conformation in aqueous methanol” by D. Mukherji, M. Wagner, M. D. Watson, S. Winzen, T. E. de Oliveira, C. M. Marques and K. Kremer, Soft Matter, 2016, 12, 7995

    N. F. A. van der Vegt and F. Rodríguez-Ropero, Soft Matter, 2017, 13, 2289
    DOI: 10.1039/C6SM02139E

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