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Sigma-Aldrich

Polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene

mol wt 65-115 kDa by GPC, powder (Coarse)

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Linear Formula:
[-CH2CH(C6H5)-]W(-CH2CH2-)x[-CH2CH(C2H5)-]y[-CH2CH(C6H5)-]Z
CAS Number:
66070-58-4
MDL number:
MFCD00134026
UNSPSC Code:
12162002
PubChem Substance ID:
24851971
NACRES:
NA.23

form

powder (Coarse)

Quality Level

100

mol wt

65-115 kDa by GPC

contains

<1% antioxidant as inhibitor

viscosity

550 cP, 20 % in toluene, Brookfield(lit.)

density

0.91 g/mL at 25 °C (lit.)

SMILES string

C=C.C=CC=C.C=Cc1ccccc1

InChI

1S/C8H8.C4H6/c1-2-8-6-4-3-5-7-8;1-3-4-2/h2-7H,1H2;3-4H,1-2H2

InChI key

MTAZNLWOLGHBHU-UHFFFAOYSA-N

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General description

Polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene, also known as SEBS polymer, is used as a thermoplastic elastomer. It has good thermal and chemical stability with tunable mechanical properties.

Application

SEBS can be used in the formation of an anion exchange membrane with an energy efficiency of ~ 86% for the fabrication of redox flow batteries. It can also be used to form sulfonated membranes with high water permeability and thermomechanical stability for HVAC applications. SEBS finds its usage as an ion exchange membrane with a capacity of ~1.91 mmol g-1 for fuel cells.

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Soluble Polystyrene-b-poly (ethylenebutylene)-b-polystyrene Based Ionomer for Anion Exchange Membrane Fuel Cells Operating at 70? C
Gupta G, et al.
Fuel Cells, 18(2), 137-147 (2018)
Macromolecular Symposia, 245(1), 450-456 (2006)
Preparation, structure, and properties of styrene-ethylene-butylene-styrene block copolymerclay nanocomposites: Part II fracture behaviors
Lai SM, et al.
European Polymer Journal, 44(11), 3535-3547 (2008)
Polystyrene-block-poly (ethylene-ran-butylene)-block-polystyrene triblock copolymer separators for a vanadium-cerium redox flow battery
Wang Z, et al.
Journal of the Electrochemical Society, 164(4), F372-F372 (2017)

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