And you too can easily make your own "plastic" bowl and decorative stones. 100% organic and easily degradable, perfect for the environmentally conscious DIY enthusiast.
Let's go - have fun!
Why do we need a replacement for plastic at all? Is it even possible? And what exactly is bioplastics? Below you will find additional information and links to information material that we have found online on the topic!
Suitable for age group: 8 years and older
Especially interesting for: Children and young teenagers, crafters, gift seekers and environmental activists
Preparation time: about 1 ½ - 2 hours
You need (to make a small bowl i.e.) :
2 Banana peels
1 pinch thyme
1 tea spoon cinnamon
1 teaspoon vinegar
1 tea spoon glycerin (or honey)
Pot (preferably not the favourite pot, but an older one)
Wooden spoon/ chopsticks
An old fabric cloth
Bowl, egg cup, small mould ...
Possibly transparent film and rolling pin
Step 1: Blend the banana peels
Cut the banana peels into small pieces and put them in the blender with the water.
The amount of water varies, you want to have a nice mash at the end (about 220ml).
The fewer pieces left, the better. The blender will finely cut the cellulose chains that are in the banana peel.
Step 2: Add the remaining ingredients
Add glycerin, cinnamon and vinegar (1 tsp each), and a pinch of thyme. You need the vinegar to further unravel the junctions of the cellulose chains, while the glycerin makes them more flexible.
Cinnamon and thyme are food preservatives. You add them to prevent the banana peels from getting moldy.
They also give off a pleasant smell.
If you do not have a blender, you can also cut the banana peels very small and then use a hand mixer to further downsize the ingredients. But make sure to cover the whole thing well!
Step 3: Boil it up
First boil the mixture in the pot over medium heat, stirring constantly (~10min). Then continue stirring at a lower temperature for 5 min. By heating, new long starch chains are formed, the mixture becomes sticky and the cellulose is trapped in it.
In any case, do not use your best pot. The heating and the addition of the glycerine will attack the coating of the pot.
For rinsing, it is best to use cold water, then you can avoid the need for soaking.
Step 5: Shape the material according to your own imagination
You have several options to shape the mixture. You can use a bowl (egg cup, box...; covered with or without transparent film) to shape it or fill cookie cutters.
Step 6: Let it dry
Let your artwork dry in the air for about 4 days or in the oven for about 2 hrs at 80-100°C. After drying you will have a material that seems to be a mixture of plastic and rough cardboard. The starch from the banana is the skeleton, while the cellulose provides its rigidity.
discovering and exploring!
An overview of the pros and cons of biodegradable plastic, opportunities and future prospects.
© 2020 BBC, Getty Images
The journey of 14-year-old Elif Bilgin from Istanbul, who, appalled by the amount of plastic floating in the sea, set out to find a biodegradable alternative to plastic.
© WWF Deutschland
Created by Sandra Kollmansperger