A Novel Viscosity-Temperature Model of Glass-Forming Liquids by Modifying the Eyring Viscosity Equation
Round 1
Reviewer 1 Report
Dear authors,
The manuscript entitled 'A novel viscosity-temperature model of glass-forming liquids by modifying the Eyring viscosity equation' deals with the development of a temperature-dependent viscosity model with a new mathematical expression based on the Eyring pressure equation of viscosity and basic thermodynamic features of glass-forming liquids. The work is well carried out, well described and the proposed model was employed to predict the
viscosity of the low-temperature region of different glasses, which verified the reliability of the modified Eyring model. The results are enough interesting for the field.
Therefore I recommend the acceptance of this work at Applied Sciences Journal
Author Response
Comments:
The manuscript entitled 'A novel viscosity-temperature model of glass-forming liquids by modifying the Eyring viscosity equation' deals with the development of a temperature-dependent viscosity model with a new mathematical expression based on the Eyring pressure equation of viscosity and basic thermodynamic features of glass-forming liquids. The work is well carried out, well described and the proposed model was employed to predict the viscosity of the low-temperature region of different glasses, which verified the reliability of the modified Eyring model. The results are enough interesting for the field.
Therefore I recommend the acceptance of this work at Applied Sciences Journal.
Response ：Thank you for your comments.
Reviewer 2 Report
The authors propose a novel model for the viscosity of fragile liquids. The obtained equation is then fitted to the experimental data for several glass-forming liquids, and compared to existing widely-used fitting functions. The overall strategy of the paper is well formulated. The authors are however invited to consider the points below.
1- The authors raise in the introduction some issues concerning existing fitting models "these models with their own merits can meet limited practical purposes due to their boundary conditions in some specific glass compositions and workable temperature range". What does this mean? The functions can be fitted on any experimental data, and this has been done for a long time. What is the problem with these models, which requires the foundation of new models? Finally, the authors do not comment on how the model presented here bypasses these possible limitations and does a better work at fitting.
2- The strategy in Fig.3 is somehow opposite to what would be needed in practice. In particular, the authors choose to use the high-T data, plus the lowest temperature viscosity data to perform fitting. The authors stress in the introduction that new - predictive - models are needed. They however its an opportunity to put forward their method as more predictive than others. This could be achieved by taking the high-T data, plus one additional point around 1100K, to infer the lowest T data. This natural opportunity to compare the predictive behavior of their models is therefore missed.
3- The modeling section should be revised and made easier to read. In particular, the authors change notations: V_a, V_A, and V_0 are used for the same quantity. k(T) becomes k.
4- Concerning English, some sentences make no sense, and the authors should rephrase them in order to clarify what they mean. "From this perspective, a good practice of using data of prior arts to extract equation parameter can greatly improve the prediction" does not make sense. The expression "prior arts" (the author probably meant state-of-the-art?), is found elsewhere. Please correct this.
Author Response
December. 23, 2019
Journal of Applied Sciences
Dear editor,
We appreciate the valuable comments and suggestions by the reviewers. The manuscript (ID: applsci-633077) entitled A novel viscosity-temperature model of glass-forming liquids by modifying the Eyring viscosity equation has been carefully revised and the modifications have been highlighted accordingly. Our detailed responses to the comments and suggestions Please see the attachment . We hope that the revision is acceptable and look forward to hearing from you soon.
Thanks for handling our manuscript!
Sincerely,
Huidan Zeng, Ph.D.
Professor
School of Materials Science and Engineering
East China University of Science and Technology
Shanghai 200237, China
Phone: +86 21 64253395
E-mail: [email protected]
http://clxy.ecust.edu.cn/s/78/t/224/b0/80/info45184.html
Author Response File: 
Author Response.docx
