Polyvinyl alcohol (PVA) is a synthetic polymer that exhibits various
properties
depending on its molecular weight and degree of hydrolysis. The product properties of Polyvinyl Alcohol 100-60 include:
1. Molecular Weight: PVA 100-60 refers to the molecular weight
range of the
polymer. In this case, the molecular weight typically ranges between 100,000 to 60,000
g/mol. The
molecular weight affects the viscosity and mechanical properties of the PVA.
2. Degree of Hydrolysis: PVA is derived from the hydrolysis of polyvinyl acetate, where some
of the
acetate groups are replaced by hydroxyl groups. The degree of hydrolysis represents the
percentage of
hydroxyl groups present in the polymer chain. PVA 100-60 usually indicates a moderate degree
of
hydrolysis.
3. Solubility: PVA 100-60 is typically water-soluble, forming clear and viscous solutions
when dissolved
in water. The solubility of PVA decreases with increasing molecular weight and higher
degrees of
hydrolysis.
4. Film-Forming Properties: PVA 100-60 can be cast into films by drying its aqueous
solutions. The
resulting films are transparent, flexible, and exhibit good barrier properties against gases
and oils.
5. Adhesive Properties: PVA 100-60 is widely used as a binder or adhesive in various
applications. It
forms strong and flexible bonds with a variety of surfaces, including paper, wood, fabric,
and porous
materials.
6. Chemical Stability: PVA is generally chemically stable and resistant to most organic
solvents, acids,
and bases. However, it can undergo degradation upon exposure to high temperatures or
prolonged contact
with strong acids or alkalis.
7. Biodegradability: PVA 100-60 is considered partially biodegradable under certain
conditions.
Microorganisms such as bacteria and fungi can enzymatically degrade PVA, making it a
suitable material for
environmentally friendly applications.
8. Film Transparency: PVA 100-60 films exhibit high
transparency, allowing
them to be used as a base for various coatings, laminates, or protective layers.
9. Low Toxicity: PVA is generally considered safe for use in various applications. It is
non-toxic and
does not release harmful fumes during processing or use.
10. Applications: PVA 100-60 finds application in various industries such as adhesives,
coatings,
textiles, packaging, paper, construction, and as a component in personal care products.
