ABS = Acrylonitrile Butadiene Styrene
PLA = Poly Lactic Acid
these materials are used in 3D printer. the final part is combining of two materials that are mentioned before. I want to destroy PLA while ABS isn't corrosion.
Acetone and dimethyl ethyl ketone should dissolve them.
The part which i dont understand is that you want to destroy PLA? what do you mean by that? Also, can you explain about the corrosion part?
dear ankur, thanks alot.
this sample is acombination of PLA and ABS. I want to dissolve PLA in order to have just ABS as result.
So if i understand, you are looking at solvent leaching process?
I dont really have good knwoledge about solvent chemistry but i think this might help.
PLA, being an polyester will underdo hydrolysis in the presence of H or OH ions. I would suggest you to make a strong solution of KOH or NaOH (few trails, .1M to .5M) in distilled water and suspending your sample in it for few hours ( sonicating it will ensure quicker hydrolysis). Since, ABS is resistant to even strong acids, it will not be attacked by the basic solvent.
Just for trial, maybe you have a very small smaple, say 2-5 grams (not in powder form) and try the above method. You will know before hand the ABS:PLA ratio. You can correlate that with weight loss.
Try making Alkalie solvent using different salts. Also try using organic acid or low concentration HCl as ABS is stable and resistant to HCL
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