Simple Cornstarch Bioplastic
Create your own biodegradable bioplastic using cornstarch, water, and vinegar. A soothing, hands-on project that results in flexible, customizable sheets perfect for craft projects.
- Prep Time: 10 minutes
- Cook Time: 20 minutes
- Total Time: 30 minutes
- Yield: 1 bioplastic sheet
- Category: Craft
- Method: Stirring and Heating
- Cuisine: N/A
- Diet: N/A
Ingredients
Scale
- 1 cup cornstarch
- 4 cups water, divided
- 1 tablespoon white vinegar
- 1 teaspoon glycerin (optional)
- Saucepan
- Wooden spoon or heat-proof spatula
- Baking sheet or flat tray
- Parchment paper or silicone mat
- Measuring cups and spoons
- Cookie cutter or rolling pin (optional)
- Clean damp cloth and bowl of cool water
Instructions
- Measure and mix the dry and wet parts slowly.
- Warm 3 cups of water in your saucepan over low heat.
- Pour the cornstarch slurry into the saucepan while stirring slowly.
- Stir patiently as the mixture thickens.
- Remove the pan from heat when the mass pulls away from the sides.
- Spread and smooth with damp tools or a spatula.
- Let it cool and form a skin.
- Trim, cut, or press textures once mostly cool.
- Cure or finish as desired.
Notes
For added colors, rub in natural pigments like turmeric or beet powder. Pieces can soften in humid spaces; store properly.
Find it online: https://www.cozyhandsdiy.com/simple-cornstarch-bioplastic/