The percent weight of approximately 29% by weight .
200565
Polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene
mol wt 65-115 kDa by GPC, powder or chunks
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| Size/SKU | Availability | Price |
|---|---|---|
250 g | Check Cart for Availability | $276.00 |
About This Item
Linear Formula:
[-CH2CH(C6H5)-]W(-CH2CH2-)x[-CH2CH(C2H5)-]y[-CH2CH(C6H5)-]Z
CAS Number:
NACRES:
NA.23
PubChem Substance ID:
UNSPSC Code:
12162002
MDL number:
Quality Segment
form
powder or chunks
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
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.
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This Item | |||
|---|---|---|---|
| description mol wt 65-115 kDa by GPC, powder or chunks | description powder, average Mw ~118,000 by GPC, contains >0.03% antioxidant as inhibitor | description melt index ~21 g/10 min (230°C/5.0kg) | description analytical standard, suitable for gel permeation chromatography (GPC), 4,000 |
| viscosity 550 cP, 20 % in toluene, Brookfield(lit.) | viscosity 1,500 cP, 20 % in toluene, Brookfield(lit.) | viscosity 12.5 poise, 15 wt. % in toluene(25 °C, Brookfield)(lit.) | viscosity - |
| form powder (Coarse) | form powder | form pellets | form powder |
| density 0.91 g/mL at 25 °C (lit.) | density 0.91 g/mL at 25 °C (lit.) | density 0.91 g/mL at 25 °C (lit.) | density - |
| Quality Level 100 | Quality Level 100 | Quality Level 200 | Quality Level 100 |
| mol wt 65-115 kDa by GPC | mol wt average Mw ~118,000 by GPC | mol wt - | mol wt average Mw 4,000 (Typical) |
| contains <1% antioxidant as inhibitor | contains >0.03% antioxidant as inhibitor | contains - | contains - |
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Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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What is the weight percent of polystyrene (composition) in this co-polymer?
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How can I determine the shelf life / expiration / retest date of this product?
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If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdfHelpful?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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