EADScalc 1.2.5

Scripts for calculating the DS of modified cellulose from elemental analysis results

EADScalc

Description

EADScalc is a python script that can be used to determine the degree of substitution (DS) of modified cellulose (nanomaterials) using organic elemental analysis results, inlcuding correction for water content of the typically hygroscopic cellulose samples.

Installation

Use a python virtual environment and install via pip install EADScalc

Usage

To get help with the script, run:

EADScalc -h

The minimal amount of information you need to enter to run the calculation is:

EADScalc <carbon_content> <hydrogen_content> <nitrogen_content> --nmod <number_of_modifications> --O1 <number_O_first_mod> --H1 <number_H_first_mod>

However, the water content of the sample (humidity) and likely the sulfur content will be needed in most calculations.

For example (sulfate):

EADScalc 41 6 0 --humidity 5 --sulfur 0.5 --nmod 1 --01 4 --S1 1 --H1 1

When considering the empirical formula of the modification, consider all atoms that REPLACE the hydroxyl group that you are modifying. E.g. if you create cellulose acetate, the modification would be C2H3O2.

Output

Results are output to the terminal and to the file named in the command line as a text file.

Support

If there are issues, report via https://github.com/Sustainable-Materials-Lab/EADScalc/issues

Roadmap

No updates are planned for this project and it is in a dormant state.

Recent Updates

2025: Major code refactoring completed

• Reduced code duplication by consolidating repetitive patterns into data-driven structures
• Implemented decorator factories for dynamic Click option generation
• Replaced 39+ manual option decorators with 2 reusable functions
• Consolidated 13+ atomic mass variables into a single dictionary
• Refactored residual calculation from 13 if-blocks to a single loop
• Improved code maintainability while maintaining full backward compatibility
• All command-line arguments and outputs remain identical

Contributing

Contributors are welcome.

Authors and acknowledgment

Originally authored by Samuel Eyley.

Code refactored with the help of GitHub Copilot.

License

MIT License

Project status

Dormant - I no longer use this in my day to day work, so I am not actively working on it, however, I am willing to fix problems.