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Microphase separation and mechanical properties of the polyurethanes based on the high soft segment poly(bis‐azidomethyl oxetane)/tetrahydrofuran binder
Author(s) -
Jian Xiaoxia,
Song Yufang,
Zhou Weiliang,
Xiao Leqin
Publication year - 2019
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.24988
Subject(s) - oxetane , materials science , tetrahydrofuran , polyurethane , ultimate tensile strength , polymer chemistry , hydrogen bond , fourier transform infrared spectroscopy , composite material , chemical engineering , molecule , organic chemistry , solvent , chemistry , engineering
The correlation of diisocyanate structure with hydrogen bonding and microphase separation and further their influence on mechanical property was investigated in high soft segment (about 90 wt%) energetic poly(bis‐azidomethyl oxetane/tetrahydrofuran) polyurethane binder. The hydrogen bonding analysis from Fourier transform infrared spectroscopy demonstrated that the limited intersegmental hydrogen bonding can occur in the hard domain, and small‐angle X‐ray scattering results also showed that the absence of high‐order peaks in synthesized high soft segment polyurethanes. However, coplanar and symmetric diisocyanate and its inner benzene ring are favorable to ordered arrangement of hard segment, and further mircophase seperation enhance the tensile strength. POLYM. ENG. SCI., 59:724–729, 2019. © 2018 Society of Plastics Engineers