Self-Healing Performance of Cellulose-Based Gel Coating with Highly Loaded Hybrid Inhibitor
Round 1
Reviewer 1 Report
Comments and Suggestions for AuthorsDetailed information including (mechanism and types of corrosion inhibitors) of extrinsic coating should be intensively provided in an introduction or discussed in results & discussion part inorder to attract reader interests. Other points include as follow:
1. Nyquist plots should be expanded in the range of imaginary resistance to compare the effect of inhibitor contents.
2. sample damage tesr should be carried out to prove the hypothesis of self-healing of inhibitor addition
Author Response
Detailed information including (mechanism and types of corrosion inhibitors) of extrinsic coating should be intensively provided in an introduction or discussed in results & discussion part in order to attract reader interests. Other points include as follow:
- Nyquist plots should be expanded in the range of imaginary resistance to compare the effect of inhibitor contents.
Response: Thank you for your suggestion. Figure 2 shows the Nyquist plots of scratched coating with various inhibitor content. The variation of impedance of coatings was modified as below.
Line 207-221: “For the ethyl-cellulose based gel coating investigated in this work, the coating has a 3D network structure. Cross-linked cellulose molecular acts as the polymer matrix, and the small molecular oil acts as dispersed phase [22]. The intact gel coating would physically isolate of corrosive medium from metal substrate, and the added inhibitor would enhance the corrosion protection effect [9,10]. For the scratched coating, the fast release of inhibitor from coating could suppress the corrosion reactions by forming an adsorption inhibitor film at the scratched area, which leading to the impedance value of gel coating with inhibitor was higher than that of coating without inhibitor. On the other hand, the release of inhibitor would lead to the reduction in the dispersed phase in gel coating structure, especially for the coating with high inhibitor content. In addition, the release of inhibitor from gel coating would also have a decrease of the adhesive force. The degradation of coating structure or decrease of adhesive force could both lead to a significant decrease in the capacitive loop radius of EIS plots. And this is why there are only 7 days results for the coating with 31% inhibitor, and 3 days results for the coating with 33% inhibitor.”
The authors also use the variation of low-frequency modulus values and accumulative release rate to explain the self-healing performance of the gel coatings.
- sample damage tesr should be carried out to prove the hypothesis of self-healing of inhibitor addition
Response: Thank you for your comments. The self-healing performance of various prepared coatings was based on the artificial scratch on the coating surface. The scratch was made by a knife on the coating, which is deep to substrate steel. And related description was in 2.3.1 section. Authors have modified the sentence to make the preparation method more clearly.
Line 152-154: “In order to understand the self-healing performance of the gel coating with inhibitor, a 10 mm length artificial scratch was made by a knife on the coating, which is deep to substrate steel.”
Reviewer 2 Report
Comments and Suggestions for AuthorsIn this work, an ethyl-cellulose based gel coating with various contents of alkyl imidazoline was prepared to investigate the influence of inhibitor on the self-healing effect of the gel coating. The work is of mainly practical interest. The study provides convincing evidence of the effectiveness of the self-healing performance of ethyl-cellulose based gel coating with different corrosion inhibitors
Comments:
1. On lines 90, 93, 130, 137, 170, 173, 233, 243, 262, 264, 387, 391, 403 it is necessary to remove the author’s corrections.
2. The “Materials” section does not indicate the origin and properties of the materials and reagents used, including oxylene and amhydrous ethanol. In addition, the structure and properties of ethylcellulose as the main component of the gel coating should be described in more detail.
3. The manuscript does not provide any mechanical and adhesive characteristics of coatings. This indicators are important for coatings.
4. In Figure 5a, it is necessary to indicate the bands that are described in the article.
5. The authors should provide a gelation scheme. Are there any analogues for the corrosion inhibitors used? It is necessary to compare the studied inhibitors with known industrial analogues.
Author Response
In this work, an ethyl-cellulose based gel coating with various contents of alkyl imidazoline was prepared to investigate the influence of inhibitor on the self-healing effect of the gel coating. The work is of mainly practical interest. The study provides convincing evidence of the effectiveness of the self-healing performance of ethyl-cellulose based gel coating with different corrosion inhibitors
Comments:
- On lines 90, 93, 130, 137, 170, 173, 233, 243, 262, 264, 387, 391, 403 it is necessary to remove the author’s corrections.
Response: Thank you for your suggestion. Authors sincerely apologize for the carelessness and appreciate that you had pointed this out. Authors have removed the corrections in manuscript, and also double checked to avoid this kind of mistake. All changes in the above lines were marked in blue in the manuscript.
- The “Materials” section does not indicate the origin and properties of the materials and reagents used, including oxylene and amhydrous ethanol. In addition, the structure and properties of ethylcellulose as the main component of the gel coating should be described in more detail.
Response: Thank you for your suggestion. Authors have added the materials and reagents’ origin in the materials section as below.
Line 113-114: “The inhibitors were provided by Shanghai Aladding Biochemical Technology Co., Ltd, and the chemical structure of inhibitors is presented in Figure 1.”.
Line 117-119: “The chemicals for gel coating preparation were supplied by Chengdu Kelong Chemical Reagent Company, and no pre-process for all chemicals before use.”.
Line 122-123: “A 20# steel coupon (provided by Taiyuan Iron & Steel Group Co., Ltd., China) with a size of 40 mm×15 mm×2 mm was used as substrate to prepare coating samples.”.
Ethyl cellulose (EC) is a commonly used cellulose derivative, which has the characteristics of the thermoplastic polymer and can be prepared by etherification of natural cellulose. It has excellent film-forming properties, chemical resistance, and degradability [1-2]. It is reported that ethyl cellulose has good compatibility with mineral oil and castor oil to form a stable oil gel, and the mechanical strength of the oil gel can be adjusted by changing the proportion of oil components [3]. Yu et al. [4] prepared a series of thermoplastic elastomers with different strengths and toughness from ethyl cellulose, fatty acids, and furfural. And authors had published a series articles based on EC-gel coatings [2, 5-7] and achieved coatings with good corrosion protection and self-healing effect. Therefore, this work further investigated the synergistic effect between different inhibitors and the interaction between hybrid inhibitor and EC coating to enhance the self-healing performance of coating with inhibitors.
- The manuscript does not provide any mechanical and adhesive characteristics of coatings. This indicators are important for coatings.
Response: Thank you for your suggestion. Authors have added the mechanical and adhesive characteristics of coatings in section 2.2 Preparation of gel coating with inhibitors. As a recyclable anti-corrosive type coating [2], the EC-based gel coatings with various inhibitors have appropriate mechanical properties and adhesive force.
Line 136-140: “To test the tensile strength of the coating, the coating material was solidified into a column shape with diameter of 7 mm according to the GB/T 5210 standard of China. A universal testing machine (GNT100, NCS Testing Technology Co., Ltd.) was employed to measure the tensile strength with a 0.5 mm/s extension rate, 3 parallel samples were tested for each condition, and the average value is listed in Table 1.”
Line 143-146: “And the thickness for all coatings prepared in this research is about 300±10 µm. The adhesive force between gel coating and steel was measured by a DeFelsko Positest AT-A pull-out adhesion tester. For each coating, 5 parallel samples were tested, and the average value is listed in Table 1.”
Line 138: “Table 1 Mechanical and adhesive characteristics of prepared coatings”
|
Coating Type |
Tensile strength (MPa) |
Adhesive force (MPa) |
|
EC coating |
1.86±0.03 |
1.24±0.02 |
|
EC coating with 25% IMO-11 |
1.54±0.08 |
1.07±0.04 |
|
EC coating with 25% IMO-11+6.25% Thiourea |
1.45±0.06 |
1.06±0.04 |
|
EC coating with 25% IMO-11+12.5% Thiourea |
1.32±0.11 |
1.01±0.03 |
|
EC coating with 25% IMO-11+6.25% Sodium Oleate |
1.47±0.05 |
1.02±0.05 |
|
EC coating with 25% IMO-11+12.5% Sodium Oleate |
1.28±0.09 |
0.94±0.02 |
- In Figure 5a, it is necessary to indicate the bands that are described in the article.
Response: Thank you for your suggestion. Authors have modified Figure 5a and added the discussed peak values in the figure. And the modified figure is as below.
Figure 5 FT-IR spectra of gel coating without and with different inhibitors, a. without and with 25% IMO-11
- The authors should provide a gelation scheme. Are there any analogues for the corrosion inhibitors used? It is necessary to compare the studied inhibitors with known industrial analogues.
Response: Thank you for your suggestion. In the field of corrosion protection, the unique properties of gel materials have gradually attracted the attention of scholars, and the anti-corrosion gel coating has become one of the emerging corrosion protection materials. The advantages and disadvantages of different preparation methods of gel materials can be concluded as below.
|
Method |
characteristic |
Advantages and disadvantages |
|
|
chemical crosslinking |
Free radical polymerization |
Simple and commonly used |
High strength and good stability, Initiators are toxic |
|
Radiation polymerization |
Energy saving, pollution-free, easy to operate |
||
|
Crosslinking of water-soluble polymers |
Many choices of monomer and synthesis technology, and subsequent characterization and statistical theory are convenient |
||
|
physical crosslinking |
Electrostatic interaction |
The reaction conditions are mild and easy to implement |
No initiator, thermally reversible |
|
Crystal crosslinking |
Thermally reversible |
||
|
Hydrogen bond crosslinking |
pH and temperature affect the rate of drug release |
||
|
Hydrophobic association |
Concentration have a great influence on the gel state |
||
Authors’ research group has focused on the cellulose-based gel coatings development and functionalization, adding inhibitors in gel coating to achieve self-healing ability. And the inhibitor type also plays a key factor in this research field.
[1] Yuan, W.; Yuan, J.; Zhang, F.; et al. Syntheses, characterization, and in vitro degradation of ethyl cellulose-graft-poly(-caprolactone)-block-poly(L-lactide) copolymers by sequential ring-opening polymerization. Biomacromolecules 2007, 8, 1101–1108.
[2] Zhang, H.; Tang, J.; Han, H.; et al. Study on a Novel Recyclable Anticorrosion Gel Coating Based on Ethyl Cellulose and Thermoplastic Polyurethane. Coatings 2019, 9, 618.
[3] Gravelle, A.J.; Davidovich-Pinhas, M.; Zetzl, A.K.; et al. Influence of solvent quality on the mechanical strength of ethylcellulose oleogels. Carbohydr. Polym. 2016, 135, 169–179.
[4] Yu,J.; Lu, C.; Wang, C.; Wang, J.; Fan, Y.; Chu, F. Sustainable thermoplastic elastomers derived from cellulose, fatty acid and furfural via ATRP and click chemistry. Carbohydr. Polym. 2017, 176, 83–90.
[5] Zhang, H.; Lin, B.; Tang, J.; et al. An ethyl cellulose-based supramolecular gel composite coating for metal corrosion protection and its self-healing property from electromagnetic heating effect, Surf. Coat. Tech. 2021, 424, 127647.
[6] Wang, J.; Tang, J.; Zhang, H.; et al. A. CO2-responsive, anti-corrosion ethyl cellulose coating based on the pH-response mechanism, Corros. Sci. 2021, 180, 109194.
[7] Lin, B.; Wang, J.; Zhang, H.; et al. Self-healing performance of ethyl-cellulose based supramolecular gel coating highly loaded with different carbon chain length imidazoline inhibitors in NaCl corrosion medium, Corros. Sci. 2022, 197, 110084.
Author Response File: 
Author Response.pdf
Reviewer 3 Report
Comments and Suggestions for AuthorsSuggestions for improving your contribution can be found in the attached file.
Comments for author File: Comments.pdf
Author Response
The manuscript must be checked thoroughly, attentively, to ensure correctness of sentences structure, grammar and words usage.
Examples:
Abstract - rows 17-18, rows 23-24
Response: Thank you for your suggestion. Authors have modified the related sentences as follows.
Line 17-19: “While, the increased inhibitor content would also affect the filming forming ability and mechanical properties of composite coating, and lead to the accelerated failure of coating.”.
Line 24-27: “The high content of hybrid inhibitor could enhance the corrosion protection effect of intact gel coating. Once the coating is damaged, the fast released inhibitor could extend the corrosion protection time. While, the synergistic effect difference of thiourea and sodium oleate with IMO-11 did not show much difference on coating self-healing effect in this work.”.
- Introduction
Rows 37-38 – We suggest considering removing numbering in the list of effects due to corrosion
Response: Thank you for your suggestion. Authors have removed the numbering in these sentences, and modified the relevant content to improve the readability.
Line 39-45: “Many researchers focus on the direct addition of corrosion inhibitors into coatings, and concluded the influence of inhibitors on coatings’ self-healing effect. The inhibitors should not react with the coating substrate, to make sure they can all play a part in corrosion protection. The total content of the inhibitor loaded in the coating could determine the self-healing effect and duration. Finally, the effective content of inhibitor could release to the damaged area of the coating to achieve a self-healing effect.”.
Rows 52-55 – Reformulation is imperative to emphasis authors contribution/solution of the previously cited paper(s) that may open other research directions.
Response: Thank you for your suggestion. Authors have modified the relative description, and summarized the influence factors for the development of this kind ethyl cellulose-based gel coating. The modified sentences are as below.
Line 59-63: “Based on the 3D network of gel materials, organic inhibitors could pre-load into the gel material to enhance the anti-corrosion performance and self-healing effect of gel [10]. The 3D network in gel coating would also control the release rate of inhibitor once the gel was damaged. Therefore, improving the adaptability of inhibitors and gel coating structure plays a key factor in the development of this kind coating.”.
Rows 59 – ‘lower use costs’ – bring evidence on the affirmation and/or cite appropriately
Response: Thank you for your suggestion. Authors have added references about the anti-corrosion characteristic of corrosion inhibitor as below.
- Fan, B.; Zhu, H.; Li, H.; Tian, H.; Yang, Biao. Penetration of imidazoline derivatives through deposited scale for inhibiting the under-deposit corrosion of pipeline steel. Corrosion Science 2024, doi:10.1016/j.corsci.2024.112209.
- Verma, C.; Quraishi, M.A.; Rhee, K.Y. Hydrophilicity and hydrophobicity consideration of organic surfactant compounds: Effect of alkyl chain length on corrosion protection. Advances in Colloid and Interface Science 2022, doi:10.1016/j.cis.2022.102723.
Rows 88-95 – Please reconsider reformulating the purpose of the manuscript.
Response: Thank you for your suggestion. The purpose of this research has been added in the last paragraph of the introduction section.
Line 98-99: “To further develop the corrosion protection technology based on supramolecular gel material, enhance the anti-corrosion performance and self-healing property of gel coating.”.
Line 106-109: “And this novel coating could be used for the corrosion protection of flange and valve connections in pipelines, bolting connections in various industrial corrosive mediums, especially in the marine environment.”.
- Experimental details
2.1 Materials
page 3, row 98 – Provide details on source of provenience for the raw materials deployed.
Response: Thank you for your suggestion. Authors have added the materials and reagents’ origin in the materials section as below.
Line 113-114: “The inhibitors were provided by Shanghai Aladding Biochemical Technology Co., Ltd, and the chemical structure of inhibitors is presented in Figure 1.”.
Line 117-119: “The chemicals for gel coating preparation were supplied by Chengdu Kelong Chemical Reagent Company, and no pre-process for all chemicals before use.”.
Line 122-123: “A 20# steel coupon (provided by Taiyuan Iron & Steel Group Co., Ltd., China) with a size of 40 mm×15 mm×2 mm was used as substrate to prepare coating samples.”.
2.2 Preparation of gel coating with inhibitors
Ensure sub-section title correctness
Response: Thank you for your suggestion, authors have checked and modified the section title as below.
Line 128: “2.2 Preparation of gel coating with inhibitors”
Supplementary information on DOE is necessary, along with the number of representative samples generated.
Response: Thank you for your suggestion. This manuscript tries to investigated the self-healing performance of cellulose based gel coating with highly loaded inhibitor. The experimental design of this work includes two parts. In the first, authors added different amount of inhibitor into gel coating. EIS test was employed to figure out the self-healing performance of gel coating with highly content of inhibitor. And then, hybrid inhibitors (IMO with thiourea or sodium oleate) were added into the gel coating. The structure features, electrochemical performance, and surface morphology of the tested coatings were measured by SEM, FT-IR, and EIS measurements.
The coatings numbers for various test methods are concluded as below.
|
Coating type |
Test method |
Sample quantities |
|
Gel coating without inhibitor |
Mechanical property |
6 |
|
EIS |
6 |
|
|
Surface observation |
2 |
|
|
FT-IR |
1 |
|
|
Gel coating with 25% IMO-11 |
Mechanical property |
6 |
|
EIS |
6 |
|
|
Surface observation |
2 |
|
|
FT-IR |
1 |
|
|
Gel coating with 27% IMO-11 |
EIS |
3 |
|
Gel coating with 29% IMO-11 |
EIS |
3 |
|
Gel coating with 30% IMO-11 |
EIS |
3 |
|
Gel coating with 31% IMO-11 |
EIS |
3 |
|
Gel coating with 25% IMO-11+6.25% Thiourea |
Mechanical property |
6 |
|
EIS |
3 |
|
|
Surface observation |
2 |
|
|
FT-IR |
1 |
|
|
Gel coating with 25% IMO-11+12.5% Thiourea |
Mechanical property |
6 |
|
EIS |
3 |
|
|
Surface observation |
2 |
|
|
FT-IR |
1 |
|
|
Gel coating with 25% IMO-11+6.25% Sodium Oleate |
Mechanical property |
6 |
|
EIS |
3 |
|
|
Surface observation |
2 |
|
|
FT-IR |
1 |
|
|
Gel coating with 25% IMO-11+12.5% Sodium Oleate |
Mechanical property |
6 |
|
EIS |
3 |
|
|
Surface observation |
2 |
|
|
FT-IR |
1 |
Page 3, row 111 – use identical number format for values provided
Response: Thank you for your suggestion. The number format was unified into keep one decimal place. And authors also over checked the manuscript to make sure the identical number format.
Line 129: “Using a hot-melt blending process, 0.5 g TiO2, 10.0 g castor oil, and 10.0 g ethyl cellulose were combined to form gel material.”
Page 3, rows 112-113, rows 119-120 – sentences reformulation is needed
Response: Thank you for your suggestion. The related sentences have been modified.
Line 130-133: “Mix all the ingredients for the gel coating material, and heat with stirring at 170℃ until the ingredients completely melted. Cool down the mixed solution at room tem-perature to obtain the ethyl-cellulose based gel coating material.”.
Line 143: “And the thickness for all coatings prepared in this research is about 300±10 µm.”.
2.3.1 Electrochemical impedance spectroscopy (EIS) measurement
Page 3, row 130 – provide details on the software deployed (provider/developer)
Response: Thank you for your suggestion. The details of the software were supplied as below.
Line 162: “Furthermore, ZSimpWin V3.0 software (AMETEK Scientific Instruments) was used to fit the EIS results.”.
2.3.3 Surface characterization
Page 4, row 140 – details on the magnification is required
Response: Thank you for your suggestion. The magnification details have been added as below.
Line 173-177: “Magnify 150 and 1000 times to observe the cross-section of prepared gel coating with various inhibitors. Optical microscope (Axio Zoom.V16, ZEISS, Germay) combined with SEM (magnify 120 times) were used to observe the corrosion morphology of scratched area on the gel coating with various inhibitors.”.
- Results and Discussion
3.1 Effect of IMO-11 inhibitor content on the gel coating self-healing behavior
Page 4, row 153 – provide details on how long the samples were immersed in the solution
Response: Thank you for your suggestion. The samples were immersed in the corrosion solution for 15 days. And the EIS test was carried out on 1, 3, 7, 10 and 15 days to investigate the variation of anti-corrosion performance. The related description was added in the first paragraph of 3.1 section.
Line 186-189: “Figure 2 displays the electrochemical impedance spectroscopy (EIS) results of prepared samples that were submerged in a 3.5 weight percent NaCl solution with saturated CO2 for different times. The EIS test was measured on the 1, 3, 7, 10 and 15 days to investigate the anti-corrosion performance of coatings.”.
Page 4, fig 2 – provide additional information on the curves (e.g. meaning of d) to be understood for readers
Response: Thank you for your suggestion. Authors have modified Figure 2 and figure caption as below.
Figure 2. Nyquist plots of artificial scratched gel coating with various contents of IMO-11 inhibitor immersed in test solution for different times: a. without, b. 25%, c. 27%, d. 29%, e. 31%, f. 33%.
Page 5, rows 170-175 – Reformulation is needed to bring clarity to the statements.
Page 5, rows 177-178 – Reformulation is needed to bring clarity to the statement.
Response: Thank you for your suggestion. Authors have modified the related sentences as below.
Line 207-221: “inhibitor and with 33% IMO-11 are almost the same, which is mainly attributed to the prototyping ability and adhesive force of gel coating. For the ethyl-cellulose based gel coating investigated in this work, the coating has a 3D network structure. Cross-linked cellulose molecular acts as the polymer matrix, and the small molecular oil acts as dispersed phase [22]. The intact gel coating would physically isolate of corrosive medium from metal substrate, and the added inhibitor would enhance the corrosion protection effect [9,10]. For the scratched coating, the fast release of inhibitor from coating could suppress the corrosion reactions by forming an adsorption inhibitor film at the scratched area, which leading to the impedance value of gel coating with inhibitor was higher than that of coating without inhibitor. On the other hand, the release of inhibitor would lead to the reduction in the dispersed phase in gel coating structure, especially for the coating with high inhibitor content. In addition, the release of inhibitor from gel coating would also have a decrease of the adhesive force. The degradation of coating structure or decrease of adhesive force could both lead to a significant de-crease in the capacitive loop radius of EIS plots. And this is why there are only 7 days results for the coating with 31% inhibitor, and 3 days results for the coating with 33% inhibitor.”.
Page 6, rows 214-215 - Reformulation is needed to bring clarity to the statement. Reconsider to be inserted into Section 2.
Response: Thank you for your suggestion. Authors have modified the related sentences and inserted them into section 3.2.
Line 256-260: “According to the EIS results of scratched gel coating with various inhibitor content, the fast release of inhibitor in aqueous corrosion medium would lead to the decrease of adhesive force and shorten the service time. To avoid the influence of corrosion inhibitors in gel coating, the following research was carried out for gel coating with a 25% IMO-11 inhibitor.”.
3.2
Page 6 – Figure 4 – Reconsider inserting the original image from the acquisition process, including magnification and other details that usually are provided
Response: Thank you for your suggestion. In Figure 4, magnify 150 and 1000 times to observe the cross-section of prepared gel coating with various inhibitors. Authors have added the magnification information in 2.3.3 section, and re-inserted the images in the manuscript.
3.3
Page 8, rows 294-295 – Reformulation is imperative.
Response: Thank you for your suggestion. The related sentence was modified as below.
Line 340-341: “The equivalent circuit as shown in Figure 7 could be used to fit the EIS results for scratched gel coating with various hybrid inhibitors.”.
Page 10, row 330, rows 339-340 – reformulation is imperative
Response: Thank you for your suggestion. The related sentence was modified as below.
Line 376-378: “Figure 8c presents the variation of Rpore value for tested coatings during different immersion times. Rpore reflects the accumulation situation of corrosion products at the scratched area.”.
Line 385-386: “And for this work, there are little difference in self-healing performance between different synergistic inhibitor types.”
Page 11, rows 348-349 – reformulation is imperative
Response: Thank you for your suggestion. The related sentence was modified as below.
Line 395-398: “The optical microscope and SEM were employed to observe the corrosion morphology of the scratched area of the gel coating with various inhibitors after 15 days of immersion. And the surface morphology of immersed gel coating without inhibitor was observed.”
Page 12 – Figure 9 - Reconsider inserting the original image from the acquisition process, including magnification and other details that usually are provided
Response: Thank you for your suggestion. Thank you for your suggestion. In Figure 9, an optical microscope (Axio Zoom.V16, ZEISS, Germay) combined with SEM (magnify 120 times) were used to observe the corrosion morphology of scratched area on the gel coating with various inhibitors. Authors have added the magnification information in 2.3.3 section, and re-inserted the images in the manuscript.
Section 3.4 – Please consider inserting within the Conclusions section.
Response: Thank you for your suggestion. 3.4 section focuses on the self-healing mechanism of as-prepared gel coatings with various hybrid inhibitors. The inhibitor added in gel coating would enhance the barrier effect of intact coating. Once the coating is damaged, the release behavior of inhibitor could further protect the steel at scratched area. The hybrid inhibitor acts as an important effect in this self-healing process.
The conclusions section has summarized the additive amount of inhibitor and the hybrid inhibitor effect on the self-healing effect of gel coating. therefore, authors hold that it’s better not to insert section 3.4 within the conclusions section.
Author Response File: Author Response.pdf
Round 2
Reviewer 1 Report
Comments and Suggestions for AuthorsThe revised version is fullfilled.
Reviewer 2 Report
Comments and Suggestions for AuthorsThe authors have made significant additions to certain sections and have made all the necessary changes to the manuscript, significantly improving its readability and quality. The work is suitable for publication in Polymers.
