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Applied Sciences
Volume 9
Issue 17
10.3390/app9173551
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Article
Peer-Review Record

Poly(phenylene methylene)-Based Coatings for Corrosion Protection: Replacement of Additives by Use of Copolymers

Appl. Sci. 2019, 9(17), 3551; https://doi.org/10.3390/app9173551
by Marco F. D’Elia 1,*, Mirko Magni 2, Stefano P. M. Trasatti 2,*, Thomas B. Schweizer 1, Markus Niederberger 1 and Walter Caseri 1
Reviewer 1: Anonymous
Reviewer 2: Anonymous
Appl. Sci. 2019, 9(17), 3551; https://doi.org/10.3390/app9173551
Submission received: 17 July 2019 / Revised: 26 August 2019 / Accepted: 27 August 2019 / Published: 29 August 2019
(This article belongs to the Special Issue Advances in Organic Corrosion Inhibitors and Protective Coatings)

Round 1

Reviewer 1 Report

The work as presented in this research shows how modification of PPM-based coatings can be used for corrosion protection. The manuscript is well written and shows an interesting application for PPM materials. As such, I believe this work is suitable for publication, after some minor corrections:

In this work, 6.1 and 13.4 %mol/mol were chosen as copolymers. It seems from all results that 13.4 %mol/mol show the desired properties. What is the reason for only choosing these relatively low copolymer percentages? It would be interesting to see what the effect is of higher amounts  of n-octyloxy side chains on the corrosion protection. Corrosion test were performed at pH values of roughly 7. Is it normal to use these neutral pH values, as corrosion is induced under basic conditions (pH 9 or higher). 6.1 % mol/mol showed worsened current density graphs, which, according to the authors is because of the limited protection ability of the copolymer. It could be an option in this case to increase the thickness of the coatings to enhance the protection.

Author Response

Please see the attachment.

Author Response File: Author Response.docx

Reviewer 2 Report

1.       The corrosion morphologies (i.e. surface and cross-sectional morphologies) after corrosion tests should be provided to identify the corrosion features and how these corrosion features were correlated to the coating structure.

2.       The present corrosion results are not enough to prove whether or not the coating can provide protection

3.       The resolution of the images (i.e., Figure 2, Figure 5, Figure 6(b) and (c)) was too low.

 


Author Response

Please see the attachment.

Author Response File: Author Response.docx

Round 2

Reviewer 2 Report

no more comments

Author Response

We would thank to the reviewer for kind suggestions and evaluation. we went through the manuscript to fix some imperfections in the English language and style.

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