Poly(ethylene oxide), commonly known as PEO or polyethylene glycol (PEG) in its linear form, is a semicrystalline synthetic polymer composed of repeating ethylene oxide units. It is valued for its excellent water solubility, biocompatibility, and ability to form stable complexes with other molecules, making it distinctly different from most commodity plastics. PEO is widely used in pharmaceuticals (drug delivery systems and solid dispersions), cosmetics, personal care products, and industrial applications including adhesives and lubricants; engineers select it over alternatives when water solubility, low toxicity, and polymer chain flexibility are critical design requirements.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Elongation at Break(εf) | 144.5 | - | — | ||
Ultimate Tensile Strength(σUTS) | 18.70 | MPa | — | ||
Young's Modulus(E) | 30.50 | MPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Glass Transition Temperature(Tg) | 218.3 | K | — | ||
Melting Point / Solidus(Tm) | 336.3 | K | — | ||
Maximum Service Temperature(Tmax) | 513.2 | K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 2.530 | eV | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Refractive Index(n) | 1.577 | - | — |