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- W2954005860 abstract "Electrospun polyimide (PI) nanofibers with excellent mechanical and thermal properties are highly required in composites, filtration, battery separators, proton exchange membranes, dielectric materials, oil-water separation, and functional sponges, because of their high mechanical strength, high porosity, good chemical and heat-resistance. In this work, a ternary polyamic acid composite precursor was used to achieve this aim. The resultant ternary PI aligned electrospun composite nanofibers (PI-AENFs) were composed of rigid moiety, soft moiety and pyrimidine-containing moiety. When the molar ratio was 40/36/24, the ternary composite PI-AENFs showed a highest tensile strength of 962 MPa, and a high modulus of 9.17 GPa. Because of the existence pyrimidine rings, the ternary composite PI-AENFs showed a 5% and 10% weight loss temperatures in the range of 537–551 °C and 577–583 °C, respectively. In addition, dynamic mechanical analysis indicated that the ternary composite PI-AENFs possessed good compatibility with each moiety because of the only one peak in the range of 294–333 °C in the dynamic mechanical analysis curves, suggesting a high glass transition temperature for all the ternary composite PI-AENF samples. These PI-AENFs with outstanding mechanical and thermal properties will provide good opportunity for applications in the high-temperature fields, such as filtration, fiber reinforced composites, battery, and so on." @default.
- W2954005860 created "2019-07-12" @default.
- W2954005860 creator A5020127989 @default.
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- W2954005860 date "2019-10-01" @default.
- W2954005860 modified "2023-10-14" @default.
- W2954005860 title "Robust strong electrospun polyimide composite nanofibers from a ternary polyamic acid blend" @default.
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- W2954005860 doi "https://doi.org/10.1016/j.coco.2019.07.001" @default.
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