Re: Colorants (masterbatch)
Hello,
I have been experimenting with using powdered pigment in the Filastruder. However, it seems that the particular colourant I want to use (I am a design research student) is not strong enough to give truly lovely colours when mixed with the PLA pellets. I ended up adding a lot, which made the melt flow really slow and resulted in unusable and very brittle filament. Reducing the amount of pigment got the melt flow back up and let me make usable filament, but the colour became really pale. Now I think I need to make concentrated masterbatch to make this colour work.
It is a special pigment, that loses its properties when heated above 230C, so a cold way of making PLA masterbatch is what I'm looking for. To make matters worse, I am not sure about compatibility with acetone - it might kill the special properties of this pigment as well. water would work, but how could I make masterbatch like that? Any ideas?