Physical properties of poly(tetrahydrofuran)-block-poly(2-ethyl-2- oxazoline) triblock copolymer

Suguru Motokucho, Mutsuhisa Furukawa, Masahiro Kawashima, Ken Kojio, Kohji Yoshinaga

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


ABA-type triblock copolymers (PEOxz-PTHF-PEOxz) composed of poly(tetrahydrofuran) (PTHF) and poly(2-ethyl-2-oxazoline) (PEOxz) were synthesized by cationic sequential polymerization. Differential scanning calorimetry and wide-angle X-ray diffraction analyses revealed that PEOxz-PTHF-PEOxzs produced a microphase separation structure, which consisted of a partially crystallized amorphous PTHF phase containing PEOxz chains on both ends. Tensile testing showed that PEOxz-PTHF-PEOxz exhibited tough mechanical properties that differed from those of the brittle PTHF homopolymer. Thus, it was suggested that the amorphous PTHF/PEOxz phase played a role in physically cross-linking the moieties via entanglement, resulting in a PEOxz-PTHF-PEOxz material with tough mechanical properties and the ability to be cold-drawn.

Original languageEnglish
Pages (from-to)1115-1119
Number of pages5
JournalPolymer Journal
Issue number11
Publication statusPublished - Nov 2013
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Materials Chemistry


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