The Process of Making Botanical Lake Pigments
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- Опубліковано 16 сер 2022
- In this video I show how to extract dye from the flower petals of the Delphinium plant and create a lake pigment.
I 'cooked' the flower petals in 500ml of water and then sieved them. Stirred in 10gr of Alum and 5gr of Bicarbonate, the water became quite clear so I got most pigment out and it seems it's a good ratio.
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The sound of you plucking the flowers into the pot was very satisfying to hear lol. This is an amazing video!🙌
Awww thank you so much!
Great video 👏
Thanks for sharing
Nice video
Why backing soda and Alum? Can't you have used chalk instead? Just a curious question. Im learning. You made a beautiful color. Would've loved seeing it mixed with oil.
Hi! Yes, chalk could have been used too. I am still researching and have come to this conclusion. A lake pigment is formed when alum (a mordant and acidic) is added to a dye and precipitates in a chemical reaction with an alkali. The chemical reaction causes the alkali to bind to and neutralise acids. There are many alkali carriers (or substrates) and baking soda and chalk are just two of them. The first creates a more transparent pigment and the latter an opaque pigment.
Thanks guys, this has been a very informative conversation
@@yvonne9198 is that Alum Stearate? Where do I get Alum? 😊
@@sebastiaantheartartistyou can get it in most grocery store spice aisles
Would crushed egg shells work??
Hello, can i ask for some studies you look onto for the process of pigment extraction in this video?. I'll try and use it onto our school's research paper
How could you retain that gorgeous beep blue?
What would happen if you dried the petals, ground them up with Cilicia or mica and added to oil?
How long did you leave it to sit after mixing the alum and baking soda? Would washing soda work?
Hi Riley, it takes just a couple of minutes really. As the alkaline soda neutralizes the acidic dye solution, it releases carbon dioxide as a gas causing the solution to foam. Continue stirring and knocking back the foam. Add soda until the reaction ceases or the soda solution is exhausted.
Baking or washing soda do have some differences, it may effect pigments differently as it will have a slightly different pH but the main difference I have noticed is that baking soda will cause more frothing and foaming than sodium carbonate.
Did you add the pigment to a medium after to make paint? What did you do with it?
Thank you for your comment, I made some water colours with them to test their lightfastness. It is still a process.
😮
Hello, did you put the coffee filter with the pigment on the oven to dry it?
Hi! No I let it airdry. Higher temperatures may effect the final colour outcome.
do you add the same amounts of soda and alun? or more of one than the other?
I don't measure out the equations of alum/bicarbonate rather add it on intuition. In this video I did 10 gr Alum and 5 gr of Bicarbonate but you could also use Calcium hydroxide too which is a substrate in itself and does not require alum.
Oh... I had no foam, barely a fizz after adding the soda...
Wish me luck, ill try to work with it regardless!
Ah... mmmh...did you add alum?
Awesome video! By any chance do you know if the lake pigment can later be used in the making of pastels?
Yes, lake pigments can indeed be used to make pastels :)
How much plant material did you use if yoi dont mind me asking?
I don't mind. 🙂 about 30 grams of flowers yielded 2 grams of pigment.
hello can i ask, how long do u boil the flowers?
I take it off the stove when most of the colour of the petals have seeped into the water.
I tried it and all the mixture passed through the filter paper, nothing remained! Do you know why?
Yes, it is possible the pigments do not bond. I reckon it has to do with the substances in the plant and how it reacts with the substrate. It's worth exploring different substrates. Try using calcium hydroxide, it is a base, alum is not needed and works like a suspension. Let me know if this helps.
im from mexico. can you help me? what other name more universal had the "alum" i dont know what is it :(
aluminium??? ahhhhggg
"Potassium alum or potassium aluminum sulfate (also called Neapolitan alum or Alum)" is this?
Hi there, I googled and found that it translates to 'sulfato de aluminio', the images do very much look like it's the same thing!
@@yvonne9198 "alumbre"
Is it food colour?
Do not use this in food, it is not edible.
Can dye clothes with this?
No, lake pigments are insoluble and are generally not suitable for dyeing clothes.
This powder alum is different from solid alum? Because when ever I have used Solid alum, the color changes.., for example i boiled onion peels and thn added alum to it.., the result was green color. But I see no change in color over here. Any specific reason for that?
Hi Nimisha, alum is a chemical compound and I don't think your solid or my powdered form are any different. The color of this Delphinium slightly changes. The liquid was a dark blue purple and changed into an icy blue however I do not expect or guarantee the same results as many aspects are contingent on environmental phenomena and on which of the pigment groups a plant contains but also Ph of the solution.
I was having the same problem just 2 days ago making my first lake pigments! Boiled red onion peels, added calcium to neutralise it, after adding alum it turned green! And I was like oh no! 😂
Can i try it with vegetable like carrots?