Preparation of Mullite/PU Nanocomposites by Double Waste Co-Recycling

Round 1

Reviewer 1 Report

Mullite/PU nanocomposites have been prepared by double waste co-recycling method.  I think that the manuscript would be publishable in Sustainability after the following minor revisins：

a) In Fig. 2, "Transmitance" and "Wavbnumber" must be carefully corrected.

b) In Table 1, why is the thermal conductivity at the mullite whisker content of 0.15% the lowest?  More discussions are required.

c) In Fig. 6, "The weight loss" must be carefully corrected to "Weight" or "Mass".

d) 4) More detailed discussion about the results shown in Figs. 2, 5, and 6 is required. It seems that some closely related references just like those suggested below are also needed to be cited to support the discussion regarding TG/IR results. Currently, there is no supporting reference in this section.

[1] Effective role of eco-friendly acetyl tributyl citrate in large-scale catalyst-free synthesis of waterborne polyurethanes without volatile organic compounds. Journal of Cleaner Production 2019, 237, 117543.
[2] Development of clean performance-tunable waterborne polyurethane using acetyl tributyl citrate for transferable holographic films. Journal of Cleaner Production 2021, 279, 123496.

Author Response

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Author Response File: Author Response.pdf

Reviewer 2 Report

Please, verify the space between words through the text.

Is the section 2.2. based on some reference? How these procedures were found?

Section 3.2 and through the text: Please verify "-1" to be superscript 

Some comparison with previous studies should be included to improve the discussion (a Table with results of this work versus another found in literature).

The conclusion section should bring some words about possible applications for the obtained materials.

Author Response

Please see the attachment

Author Response File: Author Response.pdf