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435465

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

average Mn ~5,800

Synonym(s):

Nanopatterning, Pluronic® P-123, block-copolymers, PEG-PPG-PEG

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About This Item

CAS Number:
9003-11-6
UNSPSC Code:
12352104
PubChem Substance ID:
24867236
NACRES:
NA.23
MDL number:
MFCD00082049
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vapor density

>1 (vs air)

Quality Level

100

vapor pressure

<0.3 mmHg ( 20 °C)

form

solid

feed ratio

20:70:20 (EO:PO:EO)

mol wt

average Mn ~5,800

composition

PEG, 30 wt. %

refractive index

n20/D 1.465

surface tension

34 dyn/cm, 25 °C, 0.1 wt. % in H2O

viscosity

350 cP(60 °C, Brookfield)(lit.)

transition temp

Tm (DSC) 39 °C (at peak), cloud point 90 °C (1 wt. % aqueous solution)

density

1.018 g/mL at 25 °C

HLB

7 - 9

SMILES string

O2C(C2)C.O1CC1

InChI

1S/C3H6O.C2H4O/c1-3-2-4-3;1-2-3-1/h3H,2H2,1H3;1-2H2

InChI key

RVGRUAULSDPKGF-UHFFFAOYSA-N

General description

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.

Application

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.
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.

Features and Benefits

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

Physical form

Terminal primary dihydroxy-functional oligomer.

Legal Information

Pluronic is a registered trademark of BASF

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Storage Class

11 - Combustible Solids

wgk

WGK 1

ppe

Eyeshields, Gloves, type N95 (US)

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Certificates of Analysis (COA)

Lot/Batch Number
MKCM2074
MKCL5494
MKCM9587
MKCH4375
MKCJ7781

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Articles

材料学中的聚合物分析

Sigma-Aldrich®的科学家通过1H NMR端基分析对Mn值低于3,000的聚合物进行常规测定数均分子量（Mn）。

Polymer Analysis in Materials Science

Scientists at Sigma-Aldrich® routinely determine number-average molecular weight (Mn) by 1H NMR end-group analysis for polymers having Mn values under 3,000.

Mesoporous Materials Synthesis

Mesoporous materials self-assemble from sol-gel precursors and amphiphiles, forming versatile structures for various applications.

Facile synthesis of hollow ZnS nanospheres in block copolymer solutions
Ma Y, et al.
Langmuir, 19(9), 4040-4042 (2003)
Hydrogen Bonding and Transfer in the Excited State, 2 (2011)
Formation of Nanocrystalline Phases in Sol-gel Masses in the Fe-WC (O) System and Densification up to 1100? C.
Oliver CJR, et al.
Procedia Materials Science, 1, 95-103 (2012)
View All Related Papers

Global Trade Item Number

SKUGTIN
435465-1L04061838253798
435465-250ML04061835571581