TY - JOUR
T1 - Sequence Structure, Morphology and Viscosity Behavior of 3,3-bis(azidomethyl) Oxetane-tetrahydrofuran Random Copolyether
AU - Zhai, Jinxian
AU - Jia, Honghui
AU - Guo, Xiaoyan
N1 - Publisher Copyright:
© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2017/6
Y1 - 2017/6
N2 - In order to reveal the relationship between 3,3-bis(azidomethyl) oxetane-tetrahydrofuran copolyether (P(BAMO-THF)) microstructure and its macro properties, the segment sequence structure of a kind of P(BAMO-THF) was characterized using quantitative 13C-NMR analysis. It was found that the P(BAMO-THF) is composed of equimolar comonomers whose randomness factor (R) is 1.09, belonging to a quasi-ideal random copolymer. Combining DSC and polarizing optical microscopy, it was verified that the thermal-effect between 28 °C and 41 °C attributes to the melting of the P(BAMO-THF)spherulites. Using WAXRD, it was suggested that the aggregation of BAMO micro-blocks among P(BAMO-THF) polymeric chains causes the formation of spherulites. The viscosity measurement clearly demonstrated that, below 30 °C or above 40 °C, the P(BAMO-THF) viscosities change slowly as a function of temperature. Conversely, between 30 °C and 40 °C, its viscosities sharply decline with the increase in temperature because of the changes in its morphology.
AB - In order to reveal the relationship between 3,3-bis(azidomethyl) oxetane-tetrahydrofuran copolyether (P(BAMO-THF)) microstructure and its macro properties, the segment sequence structure of a kind of P(BAMO-THF) was characterized using quantitative 13C-NMR analysis. It was found that the P(BAMO-THF) is composed of equimolar comonomers whose randomness factor (R) is 1.09, belonging to a quasi-ideal random copolymer. Combining DSC and polarizing optical microscopy, it was verified that the thermal-effect between 28 °C and 41 °C attributes to the melting of the P(BAMO-THF)spherulites. Using WAXRD, it was suggested that the aggregation of BAMO micro-blocks among P(BAMO-THF) polymeric chains causes the formation of spherulites. The viscosity measurement clearly demonstrated that, below 30 °C or above 40 °C, the P(BAMO-THF) viscosities change slowly as a function of temperature. Conversely, between 30 °C and 40 °C, its viscosities sharply decline with the increase in temperature because of the changes in its morphology.
KW - Morphology
KW - P(BAMO-THF)
KW - Sequence structure
KW - Viscosity
UR - http://www.scopus.com/inward/record.url?scp=85017657589&partnerID=8YFLogxK
U2 - 10.1002/prep.201700027
DO - 10.1002/prep.201700027
M3 - Article
AN - SCOPUS:85017657589
SN - 0721-3115
VL - 42
SP - 643
EP - 648
JO - Propellants, Explosives, Pyrotechnics
JF - Propellants, Explosives, Pyrotechnics
IS - 6
ER -