i really can not offer any advice concerning your flaking- recipe for home made bubblejet??? have not heard of a homemade variety.
i dye and print alot of fabrics. i use PFD fabrics (prepared for dyeing) or i prepare my own by prewashing with detergent (no fabric softener) to remove any chemical/oils/sizing from the fabric. then i soak the fabric in a soda ash solution, hang until almost dry- then finish drying when pressing it to freezer paper to run through the printer- i also let the ink cure/soak into the fibers for at least 24 hours before heat setting. good quality permenent ink is also important.