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

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

doi:10.1038/pj.2013.39

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 journal › Article › peer-review

8 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	1115-1119
Number of pages	5
Journal	Polymer Journal
Volume	45
Issue number	11
DOIs	https://doi.org/10.1038/pj.2013.39
Publication status	Published - Nov 2013
Externally published	Yes

All Science Journal Classification (ASJC) codes

Polymers and Plastics
Materials Chemistry

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10.1038/pj.2013.39

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title = "Physical properties of poly(tetrahydrofuran)-block-poly(2-ethyl-2- oxazoline) triblock copolymer",

abstract = "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.",

author = "Suguru Motokucho and Mutsuhisa Furukawa and Masahiro Kawashima and Ken Kojio and Kohji Yoshinaga",

year = "2013",

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T1 - Physical properties of poly(tetrahydrofuran)-block-poly(2-ethyl-2- oxazoline) triblock copolymer

AU - Motokucho, Suguru

AU - Furukawa, Mutsuhisa

AU - Kawashima, Masahiro

AU - Kojio, Ken

AU - Yoshinaga, Kohji

PY - 2013/11

Y1 - 2013/11

N2 - 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.

AB - 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.

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

Abstract

All Science Journal Classification (ASJC) codes

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