Research:
For project one we have been given a material to work with. Polyvinyl alcohol (PVA) is the material we will use for project one to create a new product
Polyvinyl alcohol (PVOH, PVA, or PVAl) is a water-soluble synthetic polymer (not to be confused with polyvinyl acetate, a popular wood glue). It has the idealized formula [CH2CH(OH)]n. It is used in papermaking, textiles, and a variety of coatings. It is white (colourless) and odorless. It is sometimes supplied as beads or as solutions in water.
Polyvinyl alcohol is used as an emulsion polymerisation aid, as protective colloid, to make polyvinyl acetate dispersions. This is the largest market application in China. In Japan its major use is vinylon fiber production.
Some other uses of polyvinyl alcohol include:
- Paper adhesive with boric acid in spiral tube winding and solid board production
- Thickener, modifier, in polyvinyl acetate glues
- Textile sizing agent
- Paper coatings, release liner,
- As a water-soluble film useful for packaging. An example is the envelope containing laundry detergent in "liqui-tabs".
- Feminine hygiene and adult incontinence products as a biodegradable plastic backing sheet.
- Carbon dioxide barrier in polyethylene terephthalate (PET) bottles
- As a film used in the water transfer printing process
- As a form release because materials such as epoxy do not stick to it
- Movie practical effect and children's play putty or slime when combined with borax
- Used in eye drops (such as artificial tears to treat dry eyes) and hard contact lens solution as a lubricant
- PVA fiber, as reinforcement in concrete
- Raw material to polyvinyl nitrate (PVN). an ester of nitric acid and polyvinyl alcohol.
- As a surfactant for the formation of polymer encapsulated nanobeads
- Used in protective chemical-resistant gloves
- Used as a fixative for specimen collection, especially stool samples
- When doped with iodine, PVA can be used to polarize light
- As an embolization agent in medical procedures
- Carotid phantoms for use as synthetic vessels in Doppler flow testing
- Used in 3D printing as support structure that can then be dissolved away.
Task:
Carry out ten experiments to investigate the properties of PVA, applying imaginative process to create something different hopefully generating ideas about what I want to produce and differentiate a idea into a product
Experiment Ideas:
- Boiling water, seeing how long it takes to dissolve
- Water at room temp, see how long it takes to dissolve
- Melting with a heat gun
- Heating in the microwave
- Dissolving in alcohol
- Dissolving in acid
- Grinding in a blender
- Lighting on fire
- Adding liquid to fabric and observing the way it solidifies
- Freeze in liquid form and then melt to normal temperature to see if it is still a liquid or solid
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