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435503 Sigma-Aldrich

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

average Mn ~3,300

Synonym: PPG-PEG-PPG, Pluronic® 31R1

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Properties

Related Categories Amphiphilic Block Copolymers, Biomaterials, Block Copolymers, Materials Science, Micro/NanoElectronics,
Quality Level   100
mol wt   average Mn ~3,300
composition   PEG, 10 wt. %
refractive index   n20/D 1.454
surface tension   34 dyn/cm, 25 °C, 0.1 wt. % in H2O
viscosity   660 cP(25 °C, Brookfield)(lit.)
transition temp   softening point −25 °C
  cloud point 25 °C (1 wt. % aqueous solution)
density   1.018 g/mL at 25 °C
HLB   2.0 - 7.0

Description

General description

Surface activity of the polymer is dependent on the EO/PO ratio. PPG-PEG-PPG exhibits lower foaming, greater defoaming and reduced gelling tendencies relative to Pluronic® surfactants. Terminal secondary hydroxyl groups of PPG-PEG-PPG have lower reactivity and acidity than the primary hydroxyl groups in Pluronic surfactants.

Application

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.

PPG-PEG-PPG Pluronic® 31R1 can be used as surface cleaners (soft and hard), defoamers in coatings, in water treatment, lubricant in metal working, anti-foaming aid and extender for linear and cross-linked polyesters and polyurethanes.

Packaging

250 mL in poly bottle

Features and Benefits

Surface activity is dependent on the EO/PO ratio. Lower foaming, greater defoaming and reduced gelling tendencies relative to Pluronic® surfactants. Terminal secondary hydroxyl groups have lower reactivity and acidity than the primary hydroxyl groups in Pluronic® surfactants.

Legal Information

Pluronic is a registered trademark of BASF

Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
1

Documents

Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles

Articles

Polyethylene Glycol (PEG) Selection Guide

Poly(ethylene glycol) (PEG) is a synthetic, hydrophilic, biocompatible polymer with widespread use in biomedical and other applications. PEGs are synthesized using a ring-opening polymerization of et...
Keywords: Adhesion, Bacterial conjugations, Click chemistry, Molecular biology, PEGylations, Polymerization reactions, Ring-opening polymerization

Synthesis of Mesoporous Materials

Mespoporous materials, also known as mesoporous molecular sieves, are a class of 3D-nanostructures with well-defined mesoscale (2–50 nm diameter) pores and surface areas up to 1000 m2/g.1 In terms of...
Material Matters 2008, 3.1, 17.
Keywords: Absorption, Catalysis, Condensations, Diffusion, Sol-gel

Peer-Reviewed Papers
15

References

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