Caustic Soda vs Soda Ash, using to clean a bast (stem) fiber. Do they have the same affect on the strength of the fiber?
I'm working on a project to clean (dissolve) bark off of some fiber that adheres to the inside of the bark. I've used caustic soda (sodium hydroxide) successfully but it weakens the fiber. Soda ash (sodium carbonate) also works and seems to have less affect on strength but I'm wondering, chemically, if there's any real difference. I don't have access to any gear to accurately measure the real tensile strength.
Thanks for your help.