Natural dyes

Natural dyes of fabrics & bioplastics samples (Fabricademy, FabTextiles, Fab Lab Barcelona, 2017)


PROJECT : To experiment natural dyes on different fabrics, fibers and bioplastics.


PROCESSES:
# Fabric dyes :
(1) Mordant the fabrics & fibers
(2) Dye the fabrics & fibers
(3) Let dry & Wash the dyed fabrics & fibers


# Bioplastics :
(1) Cook the gelatin & agar bioplastic
(2) Add the additive(s) : colors from the dyes
(3) Let the bioplastics samples dry


MATERIAL :
# For dyeing :
- cotton, wool fabrics & fibers
- mineral & natural pigments
- pH papers
- alum
- spoons, pots, jars...
- hotplates


# For bioplastics :
- gelatin
- agar agar
- glycerin
- water
- spoons, pots, jars
- plastic or acrylic sheet (for molding the bioplastic)
- hotplates


#FABRIC NATURAL DYES
(1) Mordant the fabrics & fibers
Start by weighting all the fabric pieces you want to dye. Natural dyeing works usually better on natural fibers.
For dyeing the totallity of your fabrics, put 15% grammes of alum inside enough warm water to cover completely the textiles. (total grammes of fabrics x 15) / 100 = grammes of alum
If you are dyeing only vegetable fibers you don't need to add some acid tartaric to the preparation.


(2) Dye the fabrics & fibers
When the mixture is done, put in several pots the different pigment and the textile you choose.
Wait couple of hours to let the color going inside the fibers. Then, when you feel it's ready, took the textile out of the pot, and put it to dry on a clean acrylic board (for not dyeing the tables in the lab).


(3) Let dry & Wash the dyed fabrics & fibers
When the samples are dry, wash them in warm clean water, starting by the lighter color to not contaminate the other colors.
After the second drying process you can iron the samples for fixing the color.


#BIOPLASTIC NATURAL DYES
Use the colored water from the dyes to make your bioplastic recipe.