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![Poly[4,4′-methylenebis(phenyl isocyanate)-alt-1,4-butanediol/di(propylene glycol)/polycaprolactone] pellets, MDI-polyester/polyether polyurethane.](/deepweb/assets/sigmaaldrich/product/structures/661/697/b23c24ce-15fb-4eae-a30f-786921d4c91e/640/b23c24ce-15fb-4eae-a30f-786921d4c91e.png)
General description
Polyurethanes are a broad class of polymers which have urethane group (-NHCO-O-). Urethane group is formed by isocyanate reacting with hydroxyl groups.
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Application
Polymeric membrane material for chemosensors and biosensors
Polyurethane was used as an outer coating membrane to increase stability and the linear range of the sensor during development of glutamate microbiosensor. It may also be suitable in investigating the thermal degradation of α,γ-diphenyl alkyl allophanates and carbanilates for crosslinking sites using pyrolysis-high-resolution gas chromatography/FT-IR (Py-HRGC/FT-IR).
Other Notes
Membrane material with favourable properties for sensors, e.g. long-term electrochemical stability, improved biocompatibility, etc.
Legal Information
Selectophore is a trademark of Merck KGaA, Darmstadt, Germany
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
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S Y Yun et al.
Analytical chemistry, 69(5), 868-873 (1997-03-01)
Potentiometric responses of polyurethane (PU)-based membranes containing valinomycin and varying amounts of plasticizer (DOA) and/or lipophilic additive (KTpClPB) were examined as a function of soft segment [poly(tetramethylene ether glycol)] contents in aromatic diisocyanate-based PU matrices. Upon increasing the weight percentages
Thermal degradation mechanism of a, ?-diphenyl alkyl allophanate as a model polyurethane by pyrolysis-high-resolution gas chromatography/FT-IR.
Yoshitake, Norimichi, and Mutsuhisa Furukawa.
Journal of Analytical and Applied Pyrolysis, 33, 269-281 (1995)
E. Lindner et al.
Electroanalysis, 7, 864-864 (1995)
Malika Ammam et al.
Biosensors & bioelectronics, 25(7), 1597-1602 (2009-12-26)
A highly sensitive and selective glutamate microbiosensor based on polypyrrole (PPy), multiwalled carbon nanotubes (MWCNT) and glutamate oxidase (GluOx) deposited on the transducer platinum electrode (Pt) is described. The sensor consists of a permselective membrane of polypyrrole for the rejection
Polyurethane elastomers.
Petrovic, Zoran S., and James Ferguson.
Progress in Polymer Science, 16, 695-836 (1991)
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