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Peer-Review Record

A Novel ZnO Nanoparticles Enhanced Surfactant Based Viscoelastic Fluid Systems for Fracturing under High Temperature and High Shear Rate Conditions: Synthesis, Rheometric Analysis, and Fluid Model Derivation

Polymers 2022, 14(19), 4023; https://doi.org/10.3390/polym14194023
by Mahesh Chandra Patel 1,*, Mohammed Abdalla Ayoub 1, Anas Mohammed Hassan 2 and Mazlin Bt Idress 1
Reviewer 1:
Reviewer 2: Anonymous
Polymers 2022, 14(19), 4023; https://doi.org/10.3390/polym14194023
Submission received: 24 July 2022 / Revised: 11 August 2022 / Accepted: 15 August 2022 / Published: 26 September 2022

Round 1

Reviewer 1 Report

In this paper, the authors proposed a viscoelastic fluid system based on cationic cetrimonium bromide surfactants and modified it by adding ZnO nanoparticles. The author argued that adding nanoparticles could improve the rheology of the fluid at the high shear rate and temperature and investigated the performance of different fluids to support their hypothesis.  Before this paper could be published, I have several comments,

1. The word "innovative" should be avoided either in the title or in the context of the manuscript.

2. How the range of shear rate and temperature are selected in this paper? Need to be clarified in the introduction or results part.

3. Figures 1 and 2 can be combined into a single figure as they are actually illustrating the same thing.

4. More details, like the name of contents and solutions, and the key processing techniques should be provided in figures 3 and 4.

5.  Figure 7 is replotting the data in Figure 6 when C=0.8M? if so, why don't plot Figure 6 in the form of Figure 7? why 0.8M is the optimum concentration?

6. To get a better, comparison, Figures 6, 9, 11, and 12 may be plotted as the ratio between improved and unimproved fluid.

Author Response

Please see the attachment

Author Response File: Author Response.pdf

Reviewer 2 Report

I recommend accepting the manuscript after the authors do the major revisions included in the review report in the attachment file.

Comments for author File: Comments.pdf

Author Response

Please see the attachment

Author Response File: Author Response.pdf

Round 2

Reviewer 1 Report

The authors have addressed all my concerns. I would like to recommend the acceptance.

Reviewer 2 Report

After reviewing the revised version, it was found that the authors made the required improvements. They also responded to many concerns. We now believe that the manuscript can be accepted for publication in the esteemed Journal. The final decision is yours and the academic editor.

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