181455

Polyisobutylene

average M_w ~500,000, average M_n ~200,000 by GPC/MALLS, average M_v ~420,000

• Synonym(s): PIB, polyisobutene
• Linear Formula: [CH₂C(CH₃)₂]_n
• CAS Number: 9003-27-4
• MDL number: MFCD00084436
• UNSPSC Code: 12162002
• PubChem Substance ID: 24850935
• NACRES: NA.23

Properties

• form: chunks
• mol wt: average M_n ~200,000 by GPC/MALLS; average M_v ~420,000; average M_w ~500,000
• refractive index: n20/D 1.5045
• transition temp: T_g −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

Description

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).

Safety Information

• Storage Class Code: 10 - Combustible liquids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves