Matches in SemOpenAlex for { <https://semopenalex.org/work/W3048761258> ?p ?o ?g. }
- W3048761258 endingPage "13480" @default.
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- W3048761258 abstract "Commercialpolyether polyols are usually obtained by the ring-openingpolymerization of epoxides or tetrahydrofuran. 2-Methyl-tetrahydrofuran(2-MeTHF) could be an alternative bio-based building block for thesynthesis of these polyols. Although 2-MeTHF cannot be polymerized,we did achieve the copolymerization of 2-MeTHF with propylene oxide(PO) using Lewis and Bronsted acids as catalysts and water ordiols as initiators. The resulting polyether polyols have a molecularweight range, which allows their use as components for adhesives.The molar content of 2-MeTHF in the oligomers can be up to 48%. A1:1 copolymer of 2-MeTHF and PO is produced when stoichiometric amountsof BF3·OEt2 are used. Here, the monomericunits in the chains alternate, but also cyclic or other nondiol productsare formed that are detrimental to its further use in adhesives. Lineardihydroxyl-terminated polyether chains were formed when the heteropolyacidH3PW12O40·24H2O wasused as a catalyst and a diol as an initiator. The formation of cyclicproducts can be drastically reduced when the accumulation of propyleneoxide during the reaction is avoided. 1H NMR experimentsindicate that the step of 2-MeTHF incorporation is the alkylationof 2-MeTHF by protonated PO. It was shown that the 2-MeTHF/PO copolymerhad increased tensile strength compared to polypropylene glycol ina two-component adhesive formulation." @default.
- W3048761258 created "2020-08-18" @default.
- W3048761258 creator A5007056143 @default.
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- W3048761258 creator A5083197318 @default.
- W3048761258 date "2020-08-10" @default.
- W3048761258 modified "2023-09-26" @default.
- W3048761258 title "Co-Oligomers of Renewable and “Inert” 2-MeTHF and Propylene Oxide for Use in Bio-Based Adhesives" @default.
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