435465

Poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol)

average M_n ~5,800

• Sinónimos: Pluronic^® P-123, PEG-PPG-PEG
• Número de CAS: 9003-11-6
• Número MDL: MFCD00082049
• Código UNSPSC: 12352104
• ID de la sustancia en PubChem: 24867236
• NACRES: NA.23

Propiedades

• densidad de vapor: >1 (vs air)
• presión de vapor: <0.3 mmHg ( 20 °C)
• formulario: solid
• cociente alimentación: 20:70:20 (EO:PO:EO)
• mol peso: average M_n ~5,800
• composición: PEG, 30 wt. %
• índice de refracción: n20/D 1.465
• tensión superficial: 34 dyn/cm, 25 °C, 0.1 wt. % in H₂O
• viscosidad: 350 cP(60 °C, Brookfield)(lit.)
• temperatura de transición: T_m (DSC) 39 °C (at peak); cloud point 90 °C (1 wt. % aqueous solution)
• densidad: 1.018 g/mL at 25 °C
• HLB: 7 - 9
• InChI: 1S/C3H6O.C2H4O/c1-3-2-4-3;1-2-3-1/h3H,2H2,1H3;1-2H2
• Clave InChI: RVGRUAULSDPKGF-UHFFFAOYSA-N

Descripción

Descripción general

PEG-PPG-PEG (Pluronic P123) symmetric triblock copolymer constitutes of poly(ethylene oxide)(PEO) and poly (propylene oxide) (PPO). The unique characteristic of PPO block exhibiting hydrophobicity at temperatures above 288K and solubility in water at temperatures below 288K lead to formation of micelle consisting of PEO-PPO-PEO triblock copolymers. Some studies report that the hydrophobic core contains PPO block and a hydrophilic corona is comprised of PEO block. In 30wt% aqueous solution Pluronic P123^® forms a cubic gel phase.

Aplicación

Hard and soft surface cleaners, defoamers in coatings and water treatment. Lubricant in metal working, anti-foaming aid and extender for linear and cross-linked polyesters and polyurethanes.

PEG-PPG-PEG is used in the preparation and coating of Fe-W-C(O) nanoparticles by sol gel technique. Also, employed as sacrificial templates to prepare ZnS nanospheres, nanoporous silica.

Características y beneficios

Surface active material whose properties are dependent on the hydrophilic (EO)/hydrophobic (PO) ratio. High EO content gives better o/w stabilizers.

Forma física

Terminal primary dihydroxy-functional oligomer.

Información legal

Pluronic is a registered trademark of BASF

Información de seguridad

• Código de clase de almacenamiento: 11 - Combustible Solids
• Clase de riesgo para el agua (WGK): WGK 1
• Equipo de protección personal: Eyeshields, Gloves, type N95 (US)