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Synthesis and characterization of poly (1,6‐hexamethylene oxamide‐co‐m‐xylene oxamide) copolymers
Author(s) -
Yang Tingting,
Mutua Fredrick Nzioka,
Gao Yuanbo,
Li Shuxiu,
Dong Hao,
Zhu Bo,
He Yong
Publication year - 2018
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.4414
Subject(s) - oxamide , materials science , thermal stability , fourier transform infrared spectroscopy , copolymer , crystallinity , polymer chemistry , polyamide , polymer , nuclear chemistry , chemical engineering , chemistry , organic chemistry , composite material , engineering
To modify the properties of poly (hexamethylene oxamide) (PA62), m‐xylylene diamine (MXD) was introduced into the polyamide main chain. A series of high molecular weight PA62/MXD2 were synthesized via a two‐step method. The chemical structure of polymer was analyzed by Fourier transform infrared spectroscopy and proton nuclear magnetic resonance spectroscopy, and the results confirmed the formation of PA62/MXD2. DSC test showed that the T m of the copolymers were decreased as the molar contents of MXD in the range of 10 to 50 mol %. TGA analysis revealed that the thermal stability of the copolymers compared well with commercial PA6. Wide‐angle X‐ray diffraction studies suggested the copolymers with MXD content of 0 to 10 mol % possessed high crystallinity. The water uptake measurements were monitored, and the saturated water absorptions were found to be lower than 2.5 wt %. These properties gave them a competitive edge for application where precise dimensional stability and high thermal resistance properties are required.