Please look at the following below links which may help you in your analysis:

https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0203558&type=printable

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5603859/pdf/ijpr-16-498.pdf

Thanks

Dear all, molecular weight doesn't help too much rather than the equivalent of acid groups in a given mass of the copolymer. My Regards

Please see the links below:

https://doi.org/10.1016/j.carbpol.2008.11.008

https://doi.org/10.1016/j.ijbiomac.2014.01.009

https://doi.org/10.1007/s00396-010-2307-6

My Best Regards