Polyvinyl Alcohol

Listing ID #203091

Polyvinyl Alcohol supplied by our company has excellent film forming, emulsifying, and adhesive properties. It is also resistant to oil, grease and solvent. Polyvinyl Alcohol is odorless and nontoxic. It has high tensile strength and flexibility, as well as high oxygen and aroma barrier properties. It is available at a reasonable price, and is used in various industries because of its excellent features. About Polyvinyl Alcohol (PVA)

• Its properties are dependent on humidity, in other words, with higher humidity more water is absorbed. The water, which acts as a plasticizer, will then reduce its tensile strength, but increase its elongation and tear strength
• PVA is fully degradable and is a quick dissolver
• PVA has a melting point of 230^oC and 180–190^oC (356-374 degrees Fahrenheit) for the fully hydrolyzed and partially hydrolyzed grades, respectively
• It decomposes rapidly above 200^oC as it can undergo pyrolysis at high temperatures
• PVA is an atactic material but is crystalline as the hydroxyl groups are small enough to fit into the lattice without disrupting it
• PVA is close to incompressible. The Poisson's ratio has been measured to between 0.42 and 0.48

Uses

• Paper adhesive with boric acid in spiral tube winding and solid board production
• In polyvinyl acetate glues
• As 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
• In 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 mold 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 and hard contact lens solution as a lubricant
• PVA fiber, as reinforcement in concrete
• 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
• As agent in artificial Tears for treatment of dry eye