This product is supplied as clear blocks or slabs.
181455
Polyisobutylene
average Mw ~500,000, average Mn ~200,000 by GPC/MALLS, average Mv ~420,000
Synonym(s):
PIB, polyisobutene
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100 G
$201.00
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$363.00
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100 G
$201.00
250 G
$363.00
About This Item
Linear Formula:
[CH2C(CH3)2]n
CAS Number:
MDL number:
UNSPSC Code:
12162002
PubChem Substance ID:
NACRES:
NA.23
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form
chunks
Quality Level
mol wt
average Mn ~200,000 by GPC/MALLS
average Mv ~420,000
average Mw ~500,000
refractive index
n20/D 1.5045
transition temp
Tg −64 °C
density
0.92 g/mL at 25 °C (lit.)
SMILES string
CC(C)=C
InChI
1S/C4H8/c1-4(2)3/h1H2,2-3H3
InChI key
VQTUBCCKSQIDNK-UHFFFAOYSA-N
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This Item | 181463 | 202398 | 1546966 |
|---|---|---|---|
| refractive index n20/D 1.5045 | refractive index n20/D 1.51 | refractive index n20/D 1.466 | refractive index - |
| form chunks | form solid (or Chunk(s)) | form viscous liquid | form - |
| density 0.92 g/mL at 25 °C (lit.) | density 0.92 g/mL at 25 °C (lit.) | density 1.128 g/mL | density 0.92 g/mL at 25 °C (lit.) |
| mol wt average Mn ~200,000 by GPC/MALLS | mol wt average Mn ~600,000 by GPC/MALLS, average Mv ~1,200,000, average Mw ~1,000,000 | mol wt Mn 380-420, average Mn 400 | mol wt Mw ~37000 |
| transition temp Tg −64 °C | transition temp - | transition temp - | transition temp - |
| Quality Level 100 | Quality Level 100 | Quality Level 200 | Quality Level - |
General description
Polyisobutylene is a non-toxic hydrophobic polymer that exhibits excellent flexibility at ambient temperatures, biostability, and biocompatibility. It can be used as a polymer matrix to encapsulate quantum dots and for various biomedical applications.
Application
- The use of polyisobutylene-based polymers in ophthalmology: Discusses the application of polyisobutylene-based polymers in ophthalmologic devices, highlighting its potential in biomedical applications (L Pinchuk, 2022).
- Synthesis of a polyisobutylene-tagged fac-Ir (ppy) 3 complex and its application as recyclable visible-light photocatalyst in a continuous flow process: Presents a novel use of polyisobutylene as a support for photocatalysts, enhancing recyclability and efficiency in light-driven chemical reactions (D Rackl, P Kreitmeier, O Reiser, 2016).
- Polyisobutylene-based thermoplastic elastomers for manufacturing polymeric heart valve leaflets: In vitro and in vivo results: Explores the use of polyisobutylene-based elastomers in the production of heart valve leaflets, assessing their physical properties and compatibility (E Ovcharenko et al., 2019).
- Polyisobutylene—new opportunities for medical applications: Reviews the potential of polyisobutylene in various medical applications, focusing on its properties and benefits for healthcare materials (D Barczikai et al., 2021).
- Homogeneous and heterogeneous catalysts for the synthesis of highly reactive polyisobutylene: discovery, development and perspectives: Discusses advancements in catalyst technology for producing high-reactivity polyisobutylene, crucial for high-performance materials (IV Vasilenko, SV Kostjuk, 2021).
Storage Class
10 - Combustible liquids
wgk_germany
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves
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I would like to ask whether this product is in a gel form or a solid block.
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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.
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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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I would like to purchase the Poly Isobutylene (100 gm).However from the product sheet I came to know that it is in solid form .Please explain how we can convert into coating films (dry form ) or liquid forms .
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The melting point of this item is not determined. However, according to research this product should melt around 54-56C. Literature indicates to me that this product is often solubilized in something like toluene prior to being used as a coating (Maltanava, H.; Shiman, D.; Ovodok, E.; Svito, I.; Makarevich, M.; Kostjuk, S.; Poznyak, S.; Aniskevich, A. Polymer Coatings Based on Polyisobutylene, Polystyrene and Poly(styrene-block-isobutylene-block-styrene) for Effective Protection of MXenes. Coatings 2022, 12, 1477. https://doi.org/10.3390/coatings12101477).
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Hi, does this come as a powder or suspension?
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This item is a solid, the typical physical form is 'chunks', as mentioned in the PROPERTIES section of the product page.
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