Preparation of ultra-fine polyimide fibers containing silver nanoparticles via in situ technique |
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| Affiliation: | 1. Key Laboratory of Carbon Fiber and Functional Polymers (Beijing University of Chemical Technology) Ministry of Education, Beijing 100029, China;2. Department of Mechanical & Materials Engineering, University of Denver, Denver, CO 80208, USA;1. State Key Laboratory of Organic–Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China;2. Changzhou Institute of Advanced Materials, Beijing University of Chemical Technology, Changzhou, Jiangsu Province 213164, China |
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| Abstract: | Ultra-fine polyimide fibers containing silver nanoparticles were prepared by electrospinning from poly(amic acid)/(trifluoroacetylacetonoto)silver(I) (PAA/AgTFA) solution. Thermal curing of the silver(I)-containing fibers led to cycloimidization of the poly(amic acid) into polyimide with concomitant silver(I) reduction. The polyimide–silver fibers were characterized by FT-IR, X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. The average diameters of silver nanoparticles and ultra-fine PI fibers electrospun from solutions with different amounts of AgTFA were studied, and the crystal structure of silver nanoparticles was also presented. |
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