Peer-Review Record
Sound Absorption Properties of Perforated Recycled Polyurethane Foams Reinforced with Woven Fabric
Polymers 2020, 12(2), 401; https://doi.org/10.3390/polym12020401
by
Roberto Atiénzar-Navarro 1,*, Romina del Rey 2
, Jesús Alba 2, VÃctor J. Sánchez-Morcillo 1 and Rubén Picó 1
, Jesús Alba 2, VÃctor J. Sánchez-Morcillo 1 and Rubén Picó 1Reviewer 1:
Reviewer 2:
Anonymous
Polymers 2020, 12(2), 401; https://doi.org/10.3390/polym12020401
Submission received: 17 January 2020
/
Revised: 31 January 2020
/
Accepted: 1 February 2020
/
Published: 10 February 2020
(This article belongs to the Special Issue Innovative Functional Textiles)
Round 1
Reviewer 1 Report
Please provide the more information about what type of RPU and textile fabrics were used in the study. Add it in the section 4. Please add the procedure about how the RPU and fabrics composites was prepared. The figure 10 shows that fabrics have lower sound absorption coefficient than RPU. But the authors have used it to improve the sound absorption of RPU. Please provide the reason for it in the results and discussion section. Please provide some hypothesis for the higher sound absorption coefficient of perforated foam in the region 2000 to 3150 Hz (Figure 9).Author Response
Please see the attachment.
Author Response File: 
Author Response.docx
Reviewer 2 Report
The sound absorption by polyurethane foams combined with fabrics was investigated, which deserves to be accepted after some minor revisions:
(1) The units of every physical quantity have to be given in all Eqs.;
(2) "analysed" or "analyzed"?
(3) Besides the measured macropore sizes, the sizes of mesoporous pores are suggested to be provided;
(4) More discussion should be given to the absorption mechanisms.
Author Response
Please see the attachment.
Author Response File: Author Response.docx
