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The foam should not feel cold to the touch, then it's still drying. Pinch off the more fragile sides first to create some grip. Then pull it off carefully, pulling upwards. - Mold depth: 3 mm -- Shrinkage thickness 30-50 % -- Shrinkage width/length 0-10 % +- Shrinkage thickness: 30-50 % +- Shrinkage width/length: 0-10 % **Shrinkage and deformation control** @@ -129,7 +129,7 @@ Yes. Casting solids or smooth surface might require a different process to preve - Add a **natural colorant** such as a vegetable dye or water-based ink (e.g. hibiscus, beetroot, madder) - Add **less glycerine** for a more rigid foam, more for a more flexible foam - **Stiffeners** such as fibres or natural debris may be added for more structure and reinforcement. -- **Fillers** such as almond or sunflower oil, chak or egg shells can be added to prevent additional shrinkage. +- **Fillers** such as almond or sunflower oil, chalk or egg shells can be added to prevent additional shrinkage. ## Cultural & ecological information @@ -153,20 +153,18 @@ Bioplastic production is older than petrol based plastics. In 1500 BC, people in ### References this recipe draws from -- **Biofoam Recipe** by Cecilia Raspanti (Textile Lab, Waag), Fabricademy Class "Biofabricating", 2019 [link](https://class.textile-academy.org/classes/week05A/). +- **Biofoam Recipe** by Cecilia Raspanti (Textile Lab, Waag), Fabricademy Class "Biofabricating", 2019, [link](https://class.textile-academy.org/classes/week05A/). - **Biofoam Recipe** by Cecilia Raspanti (Textile Lab, Waag), biofoam sample from the material archive, n.d. -- **The Secrets of Bioplastic** by Clara Davis (Fabtex, IAAC, Fab Lab Barcelona), 2017,[link](https://issuu.com/nat_arc/docs/the_secrets_of_bioplastic_). +- **The Secrets of Bioplastic** by Clara Davis (Fabtex, IAAC, Fab Lab Barcelona), 2017, [link](https://issuu.com/nat_arc/docs/the_secrets_of_bioplastic_). ### Known concerns and contestations\* Needs further research -Gelatin is an animal-based ingredient. Some might find it problematic to use resources that requires killing an animal because of religious or animal welfare beliefs. Arguments are also made that as long as there's a meat industry, it is better to use product from the entire animal, including skin and bones. Some might consider gelatin to be a product that comes from a waste stream, but this is considered controversial by others. +Gelatin is an animal-based ingredient. Some might find it problematic to use resources that requires killing an animal because of religious or animal welfare beliefs. Arguments are also made that as long as there's a meat industry, it is better to use product from the entire animal, including skin and bones as to not waste anything. Some might consider gelatin to be a product that comes from a waste stream, but this is considered controversial by others. -**References** +Using plant-based ingredients is not by definition petrol-free. Imagine they have to travel long distances by plane, boat or truck: it takes fuel. Also, the effects of GMO technologies and pesticides can be harmful to the environment and it's worth using knowing the source and production standards involved. If you can afford it, buying organic ingredients is a good starting point. -- **The Secrets of Bioplastic** by Clara Davis (Fabtex, IAAC, Fab Lab Barcelona), 2017,[link](https://issuu.com/nat_arc/docs/the_secrets_of_bioplastic_). -- **Glycerin** by Materiom, n.d.[link](https://materiom.org/ingredient/30). ### Sustainability tags @@ -175,13 +173,15 @@ Gelatin is an animal-based ingredient. Some might find it problematic to use res - Made of by-products or waste: yes - Biocompostable final product: yes +Gelatine-based bioplastics can be recasted by melting them in a pot with some water. Recycling them with PET plastics contaminates the waste stream. Compost bioplastics in a warm environment with sufficient airflow. + Needs further research?: not sure ## Material properties ### Comparative qualities -The biofoam feels like the foam-like packaging materials sometimes used for shipping fragile goods or thick foamy kitchen cloth. It feels colder to the touch and is slightly stickier. The upside shows visible bubbles, but the mold-facing side feels very smooth if the mold had a smooth surface. It somewhat keeps the smell of the dishwashing liquid. +The biofoam feels like the foam-like packaging materials sometimes used for shipping fragile goods or thick foamy kitchen cloth. It feels colder to the touch and is slightly stickier. The upside shows visible bubbles, but the mold-facing side feels very smooth if the mold had a smooth surface. It somewhat keeps the smell of the dishwashing liquid and smells less like wet dog than other gelatin-based bioplastics. ### Technical and sensory properties @@ -257,4 +257,10 @@ Yes **Biofoam Recipe** by Cecilia Raspanti (Textile Lab, Waag Amsterdam), biofoam sample from the material archive, n.d. +##References + +- **The Secrets of Bioplastic** by Clara Davis (Fabtex, IAAC, Fab Lab Barcelona), 2017, [link](https://issuu.com/nat_arc/docs/the_secrets_of_bioplastic_). +- **Glycerin** by Materiom, n.d. [link](https://materiom.org/ingredient/30). +- **The Bioplastics Cookbook** by Fab Textiles Lab, YYYY, [link](https://issuu.com/nat_arc/docs/bioplastic_cook_book_3) + diff --git a/docs/files/recipes/biofoilextraflexible.md b/docs/files/recipes/biofoilextraflexible.md new file mode 100644 index 0000000000000000000000000000000000000000..84c619048ffe09c5d4c460c80e26ffd097ef8b41 --- /dev/null +++ b/docs/files/recipes/biofoilextraflexible.md @@ -0,0 +1,251 @@ +# BIOFOIL EXTRA FLEXIBLE + +### Images of final product + +*Caption, Image credit, Year* + +*Caption, Image credit, Year* + +*Caption, Image credit, Year* + +### Description + +A transparent, glossy and very flexible sheet of gelatine-based bioplastic. Slightly sticky. + +### Physical form + +Surfaces & Surface Treatments + +### Fabrication time + +Preparation time: 1 Hour + +Processing time: 5-7 days + +Need attention: None, just leave it to dry as long as is feasible. + +Final form achieved after: 1 week + +## Ingredients + +* **Gelatine powder - 24 gr** + * Functions as the polymeer (so it becomes a solid) +* **Glycerine - 18 gr** + * Functions as plasticizer that bonds with the gelatine (makes it flexible). This recipe has a bit more glycerine to make the foil less rigid. It doesn't have the "crackling" sound as a result. +* **Water - 200 ml/gr** + * To dissolve and mix the polymeer and plasticizer + +## Tools + +1. **Cooker or stove** (optional: temperature controlled) +1. **Pot** +1. **Scale** +1. **Acrylic sheet** (or silicon mat) for casting. The smooth surface results in a very shiny, transparent foil. +1. **Spoons** +1. Whisk (optional) + + + +## Yield before processing/drying/curing + +Approx. 200 ml + +## Method + +1. **Preparation** + + - Weigh your ingredients + - Prepare the acrylic sheet and find a place where you can leave it for a while + +1. **Mixing and dissolving the ingredients** + - bring the water to the boil + - optional: add natural dye if you wish to use color + - add the glycerine + - add the gelatine + - keep the temperature below 80 degrees celcius while stirring *very very slowly and gently* to avoid making bubbles. I prefer a simple spoon to do this, not a whisk. + +1. **Cooking the ingredients** + + - Simmer and slowly stir the mixture between 60-80 degrees celcius for 20 minutes. I turn it lower when I get bubbles. You don't want the liquid to move, don't boil it. + - Longer cooking time allows more water to evaporate. You will get a thicker, more syruppy liquid that spreads slower: resulting in a thicker sheet. + +1. **Casting the foam** + + - Let the liquid cool for a couple minutes until it gels a little but is still liquid, like syrup. + - Cast onto the acrylic sheet slowly to avoid bubbles + - Pour from the middle and hold still, let the liquid distribute itself + - Let it dry for 48-72 hours at least before releasing. If it feels cold to the touch it is still drying. Patience pays off with these sheets + + +### Drying/curing/growth process + +Peel it off the mold after 48-72 hours (enjoy the sound it makes!) +- Mold depth: N/A +- Shrinkage thickness: 30-50 % +- Shrinkage width/length: 0-10 % + +**Shrinkage and deformation control** + +Letting it dry up to a week to get to the final form. For storage: keep it flat and cover with baking paper. It gets a bit sticky and can cling onto itself when folded for longer periods of time. + +**Curing agents and release agents** + +None. + +**Minimum wait time before releasing from mold** + +3 days (up to a week is best) + +**Post-processing** + +Store flat in a dry and ventilated room. + +**Further research needed on drying/curing/growth?** + +Yes. Casting onto textured surfaces is likely to require a different technique and/or molds that have walls to ensure even distribution. + + +### Process + +*Mixing the ingredients at 80 degrees, Loes Bogers, 2020* + +*The gelatin is dissolved: stirring very very slowly, Loes Bogers, 2020* + +*, Releasing the sheet from the acrylic, Loes Bogers, 2020* + +## Variations on this recipe + +- Add a **natural colorant** such as a vegetable dye or water-based ink (e.g. hibiscus, beetroot, madder) +- Add **less glycerine** for a more rigid foil +- **Stiffeners** such as fibres, yarn or natural debris may be added for more structure and reinforcement. +- **Fillers** such as almond or sunflower oil, can be added to prevent additional shrinkage but might affect stickyness. + +## Cultural & ecological information + +### Where are the ingredients locally abundant? + +Gelatin is collagen extracted from the skin, bones, and connective tissues of animals (e.g. cattle, chicken, pigs, fish). It can be produced almost anywhere, so try finding a local supplier. In the Netherlands, Jacob Hooy sells gelatine made from cow's skin. + +Glycerin is a sugar alcohol derived from animal products, plants or petroleum. As such it can be produced almost anywhere. Try to find a vegetable-based glycerine that is produced locally. In the Netherlands, Orphi is an affordable vegetable-based glycerin brand. + +Water quality is not of the essence for this recipe. Most tap water will be fine. The PH level of the water might affect PH sensitive natural colorants (e.g. ink or dye extracted from blueberries, red cabbage or other vegetables rich in anthocyanins). + +**Needs further research?** Not sure + +### Cultural origins of this recipe + +Bioplastic production is older than petrol based plastics. In 1500 BC, people in Egypt were already using glues based on gelatin, casein and albumin for furniture constructions. + +**Needs further research?** Not sure + +### References this recipe draws from + +- **Biofoil (gelatin) Recipe** by Cecilia Raspanti (Textile Lab, Waag), Fabricademy Class "Biofabricating", 2019, [link](https://class.textile-academy.org/classes/week05A/). +- **The Bioplastics Cookbook** by + +### Known concerns and contestations\* + +Needs further research + +Gelatin is an animal-based ingredient. Some might find it problematic to use resources that requires killing an animal because of religious or animal welfare beliefs. Arguments are also made that as long as there's a meat industry, it is better to use product from the entire animal, including skin and bones. Some might consider gelatin to be a product that comes from a waste stream, but this is considered controversial by others. + +Acrylic is a petrol based plastic but results in very shiny foils and sheets and can be reused endlessly for casting high quality bioplastic sheets. + + +### Sustainability tags + +- Renewable ingredients: yes +- Vegan: no +- Made of by-products or waste: yes +- Biocompostable final product: yes + +Needs further research?: not sure + +Gelatine-based bioplastics can be recasted by melting them in a pot with some water. Recycling them with PET plastics contaminates the waste stream. Compost bioplastics in a warm environment with sufficient airflow. + +## Material properties + +### Comparative qualities + +The biofoam feels like the foam-like packaging materials sometimes used for shipping fragile goods or thick foamy kitchen cloth. It feels colder to the touch and is slightly stickier. The upside shows visible bubbles, but the mold-facing side feels very smooth if the mold had a smooth surface. It somewhat keeps the smell of the dishwashing liquid. + +### Technical and sensory properties + +- **Strength**: medium +- **Hardness**: flexible +- **Transparency**: translucent +- **Glossiness**: satin +- **Weight**: light +- **Structure**: closed +- **Texture**: smooth +- **Temperature**: cool +- **Shape memory**: medium +- **Odor**: moderate +- **Stickiness**: medium +- **Weather resistance:** poor +- **Acoustic properties:** needs further research +- **Anti-bacterial:** needs further research +- **Non-allergenic:** needs further research +- **Electrical properties:** no +- **Heat resistance:** low +- **Water resistance:** low +- **Chemical resistance:** needs further research +- **Scratch resistance:** poor +- **Surface friction:** sliding + +### Tactility & sound impression + +[youtube embed here] + +## About this entry + +### Maker(s) of this sample + +- Name: Loes Bogers +- Affiliation: Fabricademy student at Waag Textile Lab Amsterdam +- Location: Amsterdam, the Netherlands +- Date: 19-02-2020 – 26-02-2020 + +### Environmental conditions + +- Humidity: 75 – 85 % +- Outside temp: 5-11 degrees Celcius +- Room temp: 18 – 22 degrees Celcius + +PH tap water: 7-8 + +### Recipe validation + +Has recipe been validated? Yes + +By Cecilia Raspanti, Textile Lab, Waag Amsterdam, 9 March 2020 + +### Estimated cost (consumables) in local currency + +0,50 Euros for a yield of approx 150 ml + +### Local supplier/sourcing info + +Gelatin powder - Jacob Hooy (online retailers) +Glycerine 1.23 - Orphi/Chempropack (online retailers) +Eco dishwasing soap - any (eco)supermarket +Lego sheet - second hand/flea market/thrift shop + +## Copyright information + +### This recipe is in the public domain (CC0) + +No + +### This recipe was previously published by someone else + +Yes + +**Biofoam Recipe** by Cecilia Raspanti (Textile Lab, Waag Amsterdam), biofoam sample from the material archive, n.d. + +##References + +- **The Secrets of Bioplastic** by Clara Davis (Fabtex, IAAC, Fab Lab Barcelona), 2017, [link](https://issuu.com/nat_arc/docs/the_secrets_of_bioplastic_). +- **Glycerin** by Materiom, n.d. [link](https://materiom.org/ingredient/30). + + diff --git a/docs/files/recipes/recipe_TEMPLATE.md b/docs/files/recipes/recipe_TEMPLATE.md index fcac290384b15b6bb8484ee8267b5dff6ebbf9dc..828acb0edf515d0e36dbf21dd8e412015314ca2a 100644 --- a/docs/files/recipes/recipe_TEMPLATE.md +++ b/docs/files/recipes/recipe_TEMPLATE.md @@ -3,7 +3,9 @@ ### Images of final product *Caption, Image credit, Year* + *Caption, Image credit, Year* + *Caption, Image credit, Year* ### Description @@ -128,11 +130,9 @@ Yes/No/Not sure [Notes] -### References this recipe draws from +### This recipe draws together information from these other recipes -- **[Title of publication 1]** by [First Name, Last Name Author]\([Affiliation/Institution]\), [YYYY], [Publication name or channel],[link](put URL here). -- **[Title of publication 1]** by [First Name, Last Name Author]\([Affiliation/Institution]\), [YYYY], [Publication name or channel],[link](put URL here). -- **[Title of publication 1]** by [First Name, Last Name Author]\([Affiliation/Institution]\), [YYYY], [Publication name or channel],[link](put URL here). +- **[Title of publication 1]** by [First + Last Name Author]\([Affiliation/Institution]\), [Publication name or channel], [YYYY], [link](put URL here). ### Known concerns and contestations\* @@ -142,10 +142,6 @@ Yes/No/Needs further research [Describe them here free text] -**References** - -- **[Title of publication 1]** by [First Name, Last Name Author]\([Affiliation/Institution]\), [YYYY], [Publication name or channel],[link](put URL here). - ### Sustainability tags - Renewable ingredients: yes/no/needs further research @@ -193,7 +189,7 @@ Needs further research?: Yes/No/Not sure ## About this entry -### Maker(s) of this sample +### Maker of this sample - Name: Loes Bogers - Affiliation: Fabricademy student at Waag Textile Lab Amsterdam @@ -205,12 +201,13 @@ Needs further research?: Yes/No/Not sure - Humidity: 75 – 85 % - Outside temp: 5-11 degrees Celcius - Room temp: 18 – 22 degrees Celcius - -PH tap water: 7-8 +- PH tap water: 7-8 ### Recipe validation -Has recipe been validated? Yes +Has recipe been validated? + +Yes By Cecilia Raspanti, Textile Lab, Waag Amsterdam, 9 March 2020 @@ -243,3 +240,8 @@ If no, please state that you agree to publish this recipe under a Creative Commo **By submitting this recipe I agree to publish it under a CC BY-SA 2.0 Creative Commons license. Please mention to these details for attributions:** [Title of publication 1] by [First Name, Last Name Author]\([Affiliation/Institution]\), [YYYY], [Publication name or channel],[link](put URL here). + +##References + +- **[Title of publication 1]** by [First + Last Name Author]\([Affiliation/Institution]\), [Publication name or channel], [YYYY], [link](put URL here). + diff --git a/docs/images/final_biofoil_extraflexible.jpg b/docs/images/final_biofoil_extraflexible.jpg new file mode 100644 index 0000000000000000000000000000000000000000..cc94805f4f3e9f4e6af4bef9da67b1f6228d2c5b Binary files /dev/null and b/docs/images/final_biofoil_extraflexible.jpg differ diff --git a/docs/projects/final-project.md b/docs/projects/final-project.md index cd9acf13250a10fabc9ddeeef3cb0ae253157f35..bc362620fd67f470a0e6de73b53e2e59df69e7e8 100644 --- a/docs/projects/final-project.md +++ b/docs/projects/final-project.md @@ -14,8 +14,8 @@ Intro intro intro | Nr | Title | Price | Form | Link | |-----|-----------------|---------|--------------------------|--------| -| 1 | Biofoam (textured) | € 0,50 | Sheet | [Recipe](../files/recipes/biofoam.md) | -| 2 | Biofoil (agar) | € 0,00 | Foil | [Recipe](../files/recipes/biofoam.md) | +| 1 | Biofoam (sheet) | € 0,50 | Sheet | [Recipe](../files/recipes/biofoam.md) | +| 2 | Biofoil Extra Flexible | € 0,00 | Foil | [Recipe](../files/recipes/biofoam.md) | | 3 | Name | € 0,00 | Form | [Recipe](../files/recipes/FILENAME.md) | | 4 | Name | € 0,00 | Form | [Recipe](../files/recipes/FILENAME.md) | | 5 | Name | € 0,00 | Form | [Recipe](../files/recipes/FILENAME.md) |