Try blending in some rabbit or other long soft fur. The long, soft hairs will help to hold and somewhat "tame" your synthetic.
I would use a blender half full of water with a few drops of liquid detergent (any brand) and "blend" the two materials for about 15 -20 seconds.
Drain in a wire strainer and rinse well under the faucet.
Pat dry with a few paper towels and allow to dry.
This would not chop the materials too much and will evenly blend the two materials.