Fabrication of trans-1,4-polyisoprene nanofibers by electrospinning and its crystallization behavior and mechanism |
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| Authors: | Hua-feng Shao Zhi-lu Li Ai-hua He Chen-guang Liu Wei Yao |
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| Affiliation: | Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization, Key Laboratory of Rubber-Plastics,Ministry of Education, Qingdao University of Science and Technology, Qingdao 266042, China |
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| Abstract: | Trans-1,4-polyisoprene (TPI) nanofibers have been fabricated successfully through electrospinning technology. Through the control of electrospinning parameters, highly crystallized TPI fresh fibers composed mainly by β phase were produced. Morphology and diameter of TPI nanofibers can be controlled by adjusting the electrospinning conditions. The in situ observations of FTIR spectra revealed that the crystallinity of the TPI fibers decreased with aging. While for TPI nanofibers aging at 45 °C for 24 h, a decrease in crystallinity as well as β to α transformation was observed with aging and these changings happened in the first 50 h during aging. The mechanism for β-TPI formation during electrospinning process and the reduced crystallinity with aging were proposed. |
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| Keywords: | Electrospinning Trans-l,4-polyisoprene Crystallization Transformation βphase |
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