Peo mw

Manufactured by Merck Group

Sourced in United States

PEO Mw is a laboratory equipment product from Merck Group. It is a polyethylene oxide material with a specified molecular weight. The core function of this product is to provide a well-defined macromolecular material for research and analytical applications.

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Lab products found in correlation

Litfsi, by Merck Group (2 mentions) Poly ethylene glycol methyl ether peg, by Merck Group (1 mentions) 1 ethyl 3 methylimidazolium bis, by Merck Group (1 mentions) D α tocopherol polyethylene glycol 1000 succinate tpgs, by Merck Group (1 mentions) Urea, by Thermo Fisher Scientific (1 mentions)

Close spelling variants of this product

Polyethylene oxide (PEO; Mw, 400,000 g/mol)

2 protocols using peo mw

Preparation of Solid Polymer Electrolytes

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PEO M_w = 5 × 10⁶ g·mol⁻¹ from Sigma-Aldrich (Sigma-Aldrich, St. Louis, MO, USA) was used to prepare the composites. LiTFSI, from Aldrich and neat sepiolite, kindly supplied by TOLSA S.A. (TOLSA, Madrid, Spain), were dried under a vacuum for 24 h. d-α-tocopherol polyethylene glycol 1000 succinate (TPGS), used to prepare the modified sepiolite TPGS–S, was purchased from Aldrich and used as received. Details on the preparation of TPGS-S have appeared elsewhere [14 (link)]. The RTILs employed to prepare the electrolytes listed in Table 1 were purchased from Solvionic (Solvionic, Toulouse, France), all of them with 99.5% purity. They are the following: 1-ethyl-3-methylimidazolium bis(fluorosulfonyl)imide (EMIFSI), N-propyl-N-methylpyrrolidinium bis(fluorosulfonyl)imide (PMPFSI); N-propyl-N-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide (PMPTFSI), 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl) imide (EMITFSI).
Solutions of LiTFSI with RTILs and poly(ethylene glycol) methyl ether (PEG), M_n = 550 g·mol⁻¹ from Sigma-Aldrich (Sigma-Aldrich, St. Louis, MO, USA) were prepared by magnetic stirring for 30–120 min, as model liquid phases for the solid polymer electrolytes.

González F., Gregorio V., Rubio A., Garrido L., García N, & Tiemblo P. (2018). Ionic Liquid-Based Thermoplastic Solid Electrolytes Processed by Solvent-Free Procedures. Polymers, 10(2), 124.

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Preparation and Characterization of PEO-based Polymer Gel Electrolytes

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To prepare the electrolytes, PEO MW = 5 × 10 6 g mol -1 from Sigma-Aldrich (Missouri, USA) and uralumina 150 (U150), a DES prepared with AlCl3:urea at a molar ratio 1.5:1, from Scionix Ltd. (London, UK) were used. urea (99.5%) from Fischer Scientific (New Hampshire, USA) was employed to prepare the inclusion compound (IC) with PEO, which has been used as a reference. All materials were used as received.
Preparation procedure U150 was placed in a glass beaker on top of a heating plate inside a glovebox under an argon atmosphere ([O2] < 1 ppm, [H2O] < 1 ppm), and PEO powder was added stepwise while stirring with a glass rod and rising the temperature up to 70 o C. As soon as the temperature got close to 60 o C, the change in the viscosity revealed the melting and mixing of the polymer and the PGE formed.
The PEO:urea 1:1 inclusion compound (IC), used as a reference for the interpretation of the FT-IR spectrum of PEO50-1/U150, has been prepared as reported in the literature [9] by adding the desired quantity of urea to 100 mL of MilliQ water. Under vigorous stirring at 70 o C, 0.5 g of PEO were added stepwise. Once the polymer was dissolved, the mixture was let to cool down at ambient temperature. Then, 10 mL aliquots were frozen for 12 hours at -20 o C and freeze-dried to eliminate the water. The IC obtained were white solids.

Miguel Á., Fornari R.P., García N., Bhowmik A., Carrasco-Busturia D., García-Lastra J.M, & Tiemblo P. (2020). Understanding the Molecular Structure of the Elastic and Thermoreversible AlCl₃ : Urea/Polyethylene Oxide Gel Electrolyte. ChemSusChem, 13(20).

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