What is the Difference Between PVA and PVC?

PVA (polyvinyl alcohol) and PVC (polyvinyl chloride) are two distinct types of vinyl polymers with different properties and applications. The key difference between PVA and PVC is the functional group of their polymer chains: PVA has an alcohol functional group, while PVC has a halide group.

Some notable differences between PVA and PVC include:

• Chemical Composition: PVA is a polymer made up of repeating units of vinyl alcohol monomers, with the chemical formula (C2H4O)n. PVC, on the other hand, is a polymer with the chemical formula (C2H2Cl2)n, where the halide group is chlorine.
• Physical Properties: PVA is harder and stiffer, with a more wettable surface and a greater tendency to absorb water and become softer. PVC-E (a type of PVC) is softer, more rubbery, and more hydrophobic or water repellent.
• Applications: PVA is used in papermaking, textile wrap sizing, as a thickening agent, and as an emulsion stabilizer. PVC is used in the manufacture of pipes, electric cables, construction needs, clothing, and more.
• Solubility: Both PVA and PVC can be thinned with water, and both can penetrate into wood pores and fibers. However, once dried, neither glue is water-soluble, and they cannot be easily cleaned off of wood surfaces.

In summary, PVA and PVC are two different types of vinyl polymers with distinct properties and applications. PVA is typically used in papermaking, textiles, and as an emulsion stabilizer, while PVC is used in construction, pipes, and electric cables.

Comparative Table: PVA vs PVC

PVA (polyvinyl alcohol) and PVC (polyvinyl chloride) are two different types of plastic materials with distinct properties and applications. Here is a table comparing their key differences:

PVA is a non-chlorinated vinyl and has become a common substitute for PVC due to its lower health risks and environmental impact. PVA is notably used in papermaking, textile wrap sizing, as a thickening agent, and as an adhesive. On the other hand, PVC is more widely produced and used in various applications such as flooring, wire rope production, shower curtains, tablecloths, and plumbing pipes. The health risks associated with both materials are minimal, and exposure levels are generally low.