6. BioFabricating Materials¶
Biomaterials may be natural or synthetic and are used in medical applications to support, enhance, or replace damaged tissue or a biological function. The first historical use of biomaterials dates to antiquity, when ancient Egyptians used sutures made from animal sinew.
References & Inspiration¶
- [Slides&Materials](https://class.textile-academy.org/classes/2022-23/week06/) - [LectureVideo](https://drive.google.com/file/d/1SDN_uftETXYroRoIYWHrzDLO3TYyXwyf/view) - [Bioplastic Cookbook](https://issuu.com/nat_arc/docs/bioplastic_cook_book_3)
Ingredients & Recipes¶
Have the following ingredients ready, as well as, measuring cups and spoons, towel, pots, electric stove top, digital weight balance and some glass and plastic containers.
* Bio -plastics -resins -silicones * gelatine * agar * alginate * fruitwaste * tapioca * calcium chloride * starch * glycerine * water * vinegar * pigments & dyes * sodium carbonate * yeast * malt
- GELATINE CHAPTER
Process and workflow¶
My first step was to pull out of the fridge the remaining Logwood dye water with modifiers from Biochromes week. I pulled out my notebook, materials and exact measurements I was gonna be working with which all came from the recipes from the lecture. I did most of my explorations with gelatine.
Documenting and comparing experiments¶
TEST SERIE BIO-PLASTIC¶
|Material pic||Material name||polymer||plastifier||filler||emulsifier/pigment|
|bio-foam||gelatine powder 48 gr||glycerine 12 gr||water 240 ml||soap 10 ml +food colouring to taste|
|bio-silicone||gelatine powder 48 gr||glycerine 48 gr||water 240 ml||food colouring to taste|
|bio-plastic||gelatine powder 48 gr||glycerine 12 gr||water 240 ml||food colouring to taste|
|bio-resine||gelatine 48 gr||glycerine 8 gr||water 240 ml||food colouring to taste|
- BIO-FOAM Mix all the ingredients cold except soap in a saucepan until there are no lumps and the mixture looks homogeneous (10 minutes) 2- Bring to medium heat and keep moving 3- When you see the white foam remove 4- Add soap and mix with an electric milk foamer until desired volume.
- BIO-SILICONE Mix all the ingredients cold except in a saucepan until there are no lumps and the mixture looks homogeneous (10 minutes) 2- Bring to medium heat and keep moving 3- When you see the white foam remove 4- Remember to add more glycerine for the desired texture. In this case I used 48 gr, the maximum.
- BIO-PLASTIC Mix all the ingredients cold except in a saucepan until there are no lumps and the mixture looks homogeneous (10 minutes) 2- Bring to medium heat and keep moving 3- When you see the white foam remove 4- Spray alcohol in the mould before pouring the liquid to avoid mold, spray throughout the drying process to avoid mold like you can see happened in the image below.
- BIO-RESIN This recipe should be all mixed at 60 degrees and then boiled at 100 degrees for 5-10 minutes. I boiled for 10 minutes. The result was a hard resin. The material deformed in the drying process.
In conclusion, in the image on the left you can see the experiments being dried with the sun because in Bilbao there´s a lot of humidity so I decided to leave them outside one afternoon. In the image on the right you can see the experiments after four months, how they changed colour, deformed, became harder or shrunk to some degree.
Growing a material¶
- KOMBUCHA CHAPTER
Scoby placed in a solution of:
- 4 tea bags
- 7 cups of water
- 4 cups of sugar
- 1 cup of logwood dye water
_Post processing and treatment¶
_ The durability of the materials may depend on:
- Its components or raw materials
- Storage conditions (climate, temperature, humidity, etc)
Deteriorations in textiles are changes that affect the characteristics of the material from stains, tears, dirt, chromatic alteration to contamination.
Mold prevention tips:
- Do not expose the biomaterial excessively to direct light
- Do not leave the material in a humid place or come leave it in contact with moisture. (Ideal temperature between 18 and 21 degrees)
- Do not let in a place with polluted air (for example in a bathroom cabinet)
- Avoid places with a lot of dust, dust attracts microorganisms and insects.
Conclusion All textiles deteriorate due to the intervention of light, insects, microorganisms and air pollution that, alone or together, cause a considerable loss of tensile strength and flexibility. Oxygen in the atmosphere affects all organic substances to varying degrees. The rate of deterioration varies according to the environment and the nature of the textile biomaterials. The main factors that favor the deterioration of textiles can be categorized into three groups: