Content of review 1, reviewed on May 05, 2021

Dear authors, The manuscript related to the Alpha and nano-crystalline cellulose isolation and characterization from the date palm (Phoenix dactylifera L) trunk mesh has been reviewed. As one of the selected reviewers, I read your manuscript carefully. While your research has addressed an important subject, I observed some issues that must be addressed in a newer version. Add some images of the experimental work done by the authors since it is a new fiber, so the readers might be interested in repeating the experiments. The authors have missed some important fibers, i.e., ficus Natalensis bark cloth fibers, that fully fit the context of this topic. The authors might read about the preparation and characterization of cellulose films from ficus Natalensis bark cloth fibers. The authors might refer to such similar less known fibers that have a high potential for application in NCC development. Is the data provided in table 1 by the authors themselves? If not, please cite the source of the data? The crystallinity index should be added to table1. Please add statistical error in table 1. The authors have added "*Not determined" under table 1. However, the * sign was not seen in table 1. I could not see "The fibril's superficial layers are packed together and display a compact structure" in Figure 5A. Please mark on the SEM image what you are going to explain. As discussed in section 3.4. Morphological analysis that the surface area was increased. Can authors calculate how much surface area was increased? or can they compare widths of Delignified DPTM or Cellulose or NC? How was Tmax calculated for Table 2? Usually, it is by the derivative curve. Can authors present the DTG curve along with TGA? Please check the typos, spelling errors, unnecessary spaces carefully. For example, check subscript on the last line of page 6. Also, check the consistency of font while writing °C; the authors might refer to the first paragraph on page 8. As it was maintained that the EDX analysis indicated the carbon content of nanocellulose was increases than that of cellulose, while oxygen was found to be lower. What was the rationale behind the highest carbon content of pristine raw date palm mesh? As presented on the 5th page of supplementary information. Please discuss it in the manuscript as well. Though the article is technically acceptable, yet the article is written in poor English. Please improve the manuscript's language or get it revised by a native speaker with good knowledge of the subject. I look forward to receiving the revision and reviewing the newer version. Best of luck."

Source

    © 2021 the Reviewer.

References

    M., S. H., Arfat, A., Manjaly, P. A., M., A. S., Ahamad, M. N., Abdullah, A., Asif, A. M. 2021. Isolation and Characterization of Alpha and Nanocrystalline Cellulose from Date Palm (Phoenix dactylifera L.) Trunk Mesh. Polymers.