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Merck
CN

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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About This Item

Linear Formula:
[CH2C(CH3)2]n
CAS Number:
NACRES:
NA.23
PubChem Substance ID:
UNSPSC Code:
12162002
MDL number:
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InChI

1S/C4H8/c1-4(2)3/h1H2,2-3H3

SMILES string

CC(C)=C

InChI key

VQTUBCCKSQIDNK-UHFFFAOYSA-N

form

chunks

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.)

Quality Level

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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

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves


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Yanfei Yang et al.
Journal of the American Chemical Society, 134(36), 14714-14717 (2012-08-29)
The studies described here show that a relatively low molecular weight, narrow polydispersity polyethylene (PE) wax (Polywax) can serve as a nontoxic and nonvolatile alternative to alkane solvents in monophasic catalytic organic reactions where catalysts and products are separated under
Corinne Vebert-Nardin
Chimia, 65(10), 782-786 (2011-11-08)
With this article, we wish to give an overview of our main research activities assessing the potential of a suitable polymer modification of DNA fragments to self-assemble biologically active nanostructures. Specifically, the grafting of a hydrophobic polymer segment on DNA
A Jonás et al.
Langmuir : the ACS journal of surfaces and colloids, 26(17), 14223-14230 (2010-08-05)
Diffusive mixing in a model polymer blend of limited miscibility (i.e., the pair polydimethylsiloxane/polyisobutene) is investigated. The diffusion process is followed in the actual droplet-based microstructure of the polymer blend, as opposed to the ideal planar geometry used in previous
Seyed Mojtaba Taghizadeh et al.
Drug development and industrial pharmacy, 35(4), 487-498 (2008-12-02)
In this study, the influence of the ratio of silicone (Si) to acrylic pressure-sensitive adhesive (PSA), polyvinyl pyrrolidone (PVP), and lauryl alcohol (LA) % (wt/wt) on the properties of a drug in adhesive patch containing 4% (wt/wt) fentanyl as model
C Götz et al.
Journal of the mechanical behavior of biomedical materials, 10, 206-215 (2012-04-24)
This study examines the morphology, thermal, quasi-static and long-term dynamic creep properties of one linear and three arborescent polyisobutylene-based block copolymers (L_SIBS31, D_IBS16, D_IBS27 and D_IBS33). Silicone rubber, a common biopolymer, was considered as a benchmark material for comparison. A

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