Dear Malik,

For a short answer, I will concern only your first question!

Please consider that some silver derivatives are between the strongest antibacterial additives that can be used with different (bio)polymers. I have tried in the past the silver nanoparticles with PLA matrix even at lower wt% than 1%. The antibacterial protection was confirmed for both gram-positive and gram-negative bacteria on films and fibres.

I’m assuming that at low content of antibacterial additive (your case) there are not significant changes in the properties of biodegradation of PLA or PCL.

Good luck in your research and best regards,

Marius

PS: For eventual interest:

Antimicrobial Activity of Silver Nanoparticles in Polycaprolactone Nanofibers against Gram-Positive and Gram-Negative Bacteria, Ind. Eng. Chem. Res. 2016, 55, 49, 12532–12538, https://doi.org/10.1021/acs.iecr.6b02300

Erick Pazos-Ortiz, et al.. Dose-Dependent Antimicrobial Activity of Silver Nanoparticles on Polycaprolactone Fibers against Gram-Positive and Gram-Negative Bacteria. Journal of Nanomaterials 2017, 2017 , 1-9. https://doi.org/10.1155/2017/4752314

Liu, H. H., et al (2016) Antibacterial polycaprolactone electrospun fiber mats prepared by soluble eggshell membrane protein–assisted adsorption of silver nanoparticles. J. Appl. Polym. Sci., 43850. doi: 10.1002/app.43850

Can you identify the source of these claims?