Thermal conductivity enhancement in electrospun poly(vinyl alcohol) and poly(vinyl alcohol)/cellulose nanocrystal composite nanofibers

被引：0
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作者：
Yeongcheol Park
Myungil You
Jihoon Shin
Sumin Ha
Dukeun Kim
Min Haeng Heo
Junghyo Nah
Yoong Ahm Kim
Jae Hun Seol
机构：
[1] Gwangju Institute of Science and Technology (GIST),School of Mechanical Engineering
[2] Korea Research Institute of Chemical Technology (KRICT),Center for Environment & Sustainable Resources
[3] University of Science & Technology (UST),Department of Advanced Materials & Chemical Engineering
[4] Chonnam National University,Department of Polymer Engineering, Graduate School
[5] Smart Textile R&D team,Department of Electrical Engineering
[6] Korea High Tech Textile Research Institute,undefined
[7] Chungnam University,undefined
[8] Electric Power Conversion System Engineering Design Team,undefined
[9] Hyundai Motor Group,undefined
来源：
Scientific Reports | / 9卷
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摘要：
The thermal conductivity enhancement of neat poly(vinyl alcohol) and poly(vinyl alcohol) (PVA)/cellulose nanocrystal (CNC) composite was attempted via electrospinning. The suspended microdevice technique was applied to measure the thermal conductivity of electrospun nanofibers (NFs). Neat PVA NFs and PVA/CNC NFs with a diameter of approximately 200 nm showed thermal conductivities of 1.23 and 0.74 W/m-K, respectively, at room temperature, which are higher than that of bulk PVA by factors of 6 and 3.5, respectively. Material characterization by Fourier transform infrared spectroscopy, differential scanning calorimetry, and thermogravimetric analysis confirmed that the thermal conductivity of the PVA/CNC NFs was enhanced by the reinforcement of their backbone rigidity, while that of the neat PVA NFs was attributed to the increase in their crystallinity that occurred during the electrospinning.
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