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

被引：9

作者：

Motokucho, Suguru ^{[1
]}

Furukawa, Mutsuhisa ^{[2
]}

Kawashima, Masahiro ^{[3
]}

Kojio, Ken ^{[1
]}

Yoshinaga, Kohji ^{[1
]}

机构：

[1] Nagasaki Univ, Grad Sch Engn, Nagasaki 8528521, Japan

[2] Nagasaki Univ, Nagasaki 8528521, Japan

[3] Nagasaki Univ, Grad Sch Sci & Technol, Nagasaki 8528521, Japan

来源：

POLYMER JOURNAL | 2013年 / 45卷 / 11期

关键词：

block copolymer; phase separation; poly(tetrahydrofuran); ring-opening polymerization; MICROPHASE SEPARATION;

D O I：

10.1038/pj.2013.39

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

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.

引用

页码：1115 / 1119

页数：5

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