Polyvinyl alcohol (PVA) is a synthetic semicrystalline polymer produced by hydrolyzing polyvinyl acetate, valued for its excellent film-forming properties, water solubility, and strong hydrogen bonding between chains. It is widely used in packaging films, textile sizing, adhesives, and biodegradable applications where water-soluble or compostable performance is required; engineers select PVA over conventional plastics when environmental end-of-life management, dissolvability in processing, or barrier properties to organic solvents are critical design constraints.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Compressive Strength(σc) | 1.491 | MPa | — | ||
Elongation at Break(εf) | 156.9 | - | — | ||
Flexural Strength (MOR)(σf) | 16.47 | MPa | — | ||
Hardness (Vickers)(HV) | 127.3 | HV | — | ||
Ultimate Tensile Strength(σUTS) | 29.52 | MPa | — | ||
Young's Modulus(E) | 1.029 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Glass Transition Temperature(Tg) | 347.4 | K | — | ||
Melting Point / Solidus(Tm) | 482.4 | K | — | ||
Maximum Service Temperature(Tmax) | 560.2 | K | — | ||
Thermal Conductivity(k) | 0.8920 | W/(m·K) | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 4.349 | eV | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Refractive Index(n) | 1.502 | - | — |