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.pdf
182877
Polystyrene-block-polybutadiene-block-polystyrene
styrene 30 wt. %, average Mw ~140,000 by GPC, contains <0.5 wt. % antioxidant
About This Item
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form
chunks
Quality Level
mol wt
average Mw ~140,000 by GPC
contains
<0.5 wt. % antioxidant
composition
styrene, 30 wt. %
intrinsic viscosity
1.0(lit.)
density
0.94 g/mL at 25 °C (lit.)
SMILES string
c1(ccccc1)C=C.C(=C)C=C
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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This Item | 432415 | 432407 | 432393 |
|---|---|---|---|
| form chunks | form - | form beads | form beads |
| density 0.94 g/mL at 25 °C (lit.) | density 0.93 g/mL at 25 °C | density 0.92 g/mL at 25 °C | density 0.92 g/mL at 25 °C |
| mol wt average Mw ~140,000 by GPC | mol wt - | mol wt Mn 1,900 | mol wt - |
| contains <0.5 wt. % antioxidant | contains phenolic as antioxidant | contains phenolic as antioxidant | contains phenolic as antioxidant |
| composition styrene, 30 wt. % | composition styrene, 22 wt. % | composition styrene, 17 wt. % | composition styrene, 14 wt. % |
| intrinsic viscosity 1.0(lit.) | intrinsic viscosity - | intrinsic viscosity - | intrinsic viscosity - |
Application
- Polystyrene-block-Polybutadiene-block-Polystyrene Triblock Copolymer Meets Silica: From Modification of Copolymer to Formation of Mesoporous Silica: Describes the preparation of mesoporous silica materials assisted by a PS-b-PB-b-PS triblock copolymer. This work involves functionalizing the copolymer with (3-mercaptopropyl) triethoxysilane via a thiol-ene radical addition, which is then employed to perform sol–gel reactions with tetraethoxysilane, providing insights into the multifunctional capabilities of these materials (R Yu, S Zheng, 2015).
Storage Class Code
11 - Combustible Solids
WGK
nwg
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
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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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