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- W2123654813 abstract "Abstract Telechelic poly(ether ketone)s (PEKs) and polyisobutylenes (PIBs) were combined to form PIBPEKPIB triblock copolymers and (PIBPEK) n multiblock copolymers via the formation of urea linkages. Monovalent and bivalent amino telechelic PIBs were prepared quantitatively from allyl telechelic PIBs by a newly developed reaction sequence featuring nucleophilic reaction steps. Telechelic PEKNCO polymers were prepared from the corresponding amino telechelic PEKs via a reaction with diphosgene. The highly reactive PEKNCO and PIBNH 2 telechelics formed PEKPIB block copolymers only quantitatively when appropriately reactive primary amino groups were present on the amino telechelic PIBs. The obtained block copolymers were microphase‐separated and featured mostly lamellar structures, as determined by small‐angle X‐ray scattering (SAXS). Temperature‐dependent SAXS measurements revealed ordered polymers in the melt up to 210 °C. © 2004 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 43: 188–202, 2005" @default.
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- W2123654813 date "2004-11-22" @default.
- W2123654813 modified "2023-10-10" @default.
- W2123654813 title "Poly(ether ketone)-polyisobutylene block copolymers: Synthesis and phase behavior" @default.
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- W2123654813 doi "https://doi.org/10.1002/pola.20483" @default.
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