Polyvinyl alcohol (PVA) is a synthetic polymer produced by hydrolyzing polyvinyl acetate, characterized by excellent film-forming ability, water solubility, and strong hydrogen bonding between chains. It is widely used in packaging films, textile sizing, adhesives, and pharmaceutical applications where its biodegradability and controllable water solubility are critical advantages over conventional plastics. Engineers select PVA when water-resistance, transparency, or environmental degradation profiles are design constraints, particularly in single-use or soluble applications where standard polyolefins are unsuitable.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Compressive Strength(σc) | 16.37 | MPa | — | ||
Elongation at Break(εf) | 280.2 | - | — | ||
Flexural Strength (MOR)(σf) | 16.90 | MPa | — | ||
Ultimate Tensile Strength(σUTS) | 29.50 | MPa | — | ||
Young's Modulus(E) | 6.080 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Glass Transition Temperature(Tg) | 345.3 | K | — | ||
Melting Point / Solidus(Tm) | 464 | K | — | ||
Maximum Service Temperature(Tmax) | 593 | K | — | ||
Thermal Conductivity(k) | 1.402 | W/(m·K) | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 3.348 | eV | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Refractive Index(n) | 2.162 | - | — |