What is the chemical formula for PVA?
(C2H4O)x
Polyvinyl alcohol/Formula
What is the monomer of PVA?
monomer vinyl acetate
PVA is a vinyl polymer, as if you couldn’t guess from the name. It’s made by free radical vinyl polymerization of the monomer vinyl acetate.
What is the molecular weight of poly vinyl alcohol?
Polyvinyl alcohol has a melting point of 180 to 190°C. It has a molecular weight of between 26,300 and 30,000, and a degree of hydrolysis of 86.5 to 89%. The primary raw material used in the manufacture of polyvinyl alcohol is vinyl acetate monomer.
How is PVA made?
PVA is manufactured by the hydrolysis of polyvinyl acetate in the presence of acids or alkalis. PVA, unlike many polymers, is soluble in water. It dissolves in cold water at a slow rate, but the dissolution is fast at higher temperatures, especially around 90°C.
Is PVA soluble in methanol?
PVA is soluble in water and in methanol. Of course dependent on the molecular weigh of the polymeric material. PVA is soluble in water methanol mixture at a temperature ranging from 60 to 80 degrees centigrade.
What type of polymer is PVA?
vinyl polymer
PVA is a vinyl polymer. Polyvinyl acetate is prepared by the polymerization of vinyl acetate monomer (free-radical vinyl polymerization of the monomer vinyl acetate).
How do you make poly vinyl alcohol?
Weigh 40 grams of polyvinyl alcohol into a 1-L borosilicate glass beaker. Fill the beaker to the 1-L mark with hot tap water; stir. Cover with microwaveable plastic wrap. Microwave on high for about 3 minutes; stir and heat for an additional 3 minutes.
How do you make polyvinyl acetate into polyvinyl alcohol?
In accordance with the present invention, stable polyvinyl alcohol solutions are formed by polymerizing a vinyl ester such as vinyl acetate at a temperature of at least 135 C. to form polymeric vinyl ester. The polymeric vinyl ester, e.g., polyvinyl acetate, is then saponified to produce product polyvinyl alcohol.
What is the molar mass of acetate?
60.052 g/mol
Acetic acid/Molar mass
How do you solve PVA in water?
Steps to dissolve PVA:
- Use 1 gram of PVA in 100 ml of water.
- Use a hot plate with a magnetic stirrer for proper mixing.
- Maintain the temperature at 100-degree centigrade.
- Keep speed at 3000 rpm.
- Wait for 2 hours.