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

被引：52
|
作者：
Park, Yeongcheol [1 ]
You, Myungil [1 ,7 ]
Shin, Jihoon [2 ,3 ]
Ha, Sumin [4 ]
Kim, Dukeun [5 ]
Heo, Min Haeng [2 ,3 ]
Nah, Junghyo [6 ]
Kim, Yoong Ahm [4 ]
Seol, Jae Hun [1 ]
机构：
[1] GIST, Sch Mech Engn, Gwangju 61005, South Korea
[2] Korea Res Inst Chem Technol, Ctr Environm & Sustainable Resources, 141 Gajeong Ro, Daejeon 34114, South Korea
[3] Univ Sci & Technol, Dept Adv Mat & Chem Engn, 217 Gajeong Ro, Daejeon 34113, South Korea
[4] Chonnam Natl Univ, Grad Sch, Dept Polymer Engn, 77 Yongbong Ro, Gwangju 61186, South Korea
[5] Korea High Tech Text Res Inst, Smart Text R&D Team, 170 Geomjun Gil, Yangju Si 11410, Gyeonggi Do, South Korea
[6] Chungnam Natl Univ, Dept Elect Engn, Daejeon 34134, South Korea
[7] Hyundai Motor Grp, Elect Power Convers Syst Engn Design Team, 150 Hyundaiyeonguso Ro, Hwaseong Si 18280, Gyeonggi Do, South Korea
来源：
SCIENTIFIC REPORTS | 2019年 / 9卷 / 1期
基金：
新加坡国家研究基金会;
关键词：
SULFURIC-ACID HYDROLYSIS; CELLULOSE NANOCRYSTALS; MICROCRYSTALLINE CELLULOSE; POLYVINYL-ALCOHOL; ELASTIC-MODULUS; POLYMER; FIBERS; ORIENTATION; MANUFACTURE; MEMBRANE;
D O I：
10.1038/s41598-019-39825-8
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
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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页数：10
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