Preparation of transparent polyacrylonitrile reinforced polyurethane film and application as temperature monitor

Abstract

This study proposed a new and facile technique to prepare transparent nanofiber reinforced film and evaluated light transmittance and mechanical properties of the film and film application as the temperature monitor. The technique used electrospinning composite solution and heating precursor composite nanofibrous film to package nanofibrous network with the resin. The results showed that the film with at least 90% light transmittance was facilely prepared by the technique. While when the concentration of polyacrylonitrile in the electrospun solution was 12 wt%, heating temperature was 200°C and heating time was 10 min, transparent film with above 95% light transmittance was developed, and showed desirable mechanical properties with the stress of 32.5 Mpa, strain of 51% and Young's modulus of 180 Mpa. Based on the fact that the transparent film changed the color with the temperature, the film showed a promising application as temperature monitor. POLYM. ENG. SCI., 58:1905–1910, 2018. © 2017 Society of Plastics Engineers

Preparation and Applications of Electrospun Optically Transparent Fibrous Membrane

“…After heat treatment at 500 °C for a short period of time, the nanofibers on glass slides were successfully transformed into highly transparent and conductive silver nanofibrous networks. Zhao et al [ 98 ] also used PAN as as-spun raw materials and prepared the composite nanofibrous membrane with a light transmittance of 95% by electrospinning the precursor of PAN/PU and heat treated the composite nanofibrous membrane at 200 °C for 10 min. Moreover, Cho and Kuo [ 99 ] prepared ZnO nanofibers doped with Al by electrospinning and heating.…”

“…Self-powered sensors convert wasted micromechanical energy into available electrical energy based on the principles of triboelectricity and piezoelectric [134][135][136]. Optical sensors for chromaticity detection, resistance sensors [137], temperature sensors [98], humidity sensors [138], and pressure sensors, etc. converting external stimuli into electronic signals also had been studied [139].…”

Reversible and Photochromic Peony-Shaped Hairpin Prepared from Electrospun Hybrid Nanofibers for Visualized Solar UV Radiation Detector

“…46 Because the chemical structure of TPU is very similar to MFNF, all the characteristic absorption peaks mentioned above can be observed in that of pure TPU nanofibers on MFNF as well (green curve in Figure 5a). 47 In the case of Zn-MOF@WO 3 particles (blue curve in Figure 5a), the broad peak from 3000 to 3600 cm −1 is attributed to the water molecules in Zn-MOF@WO 3 particles. The bending vibration peak of −OH bearing on W−OH is located at 1622 cm −1 .…”