| 학회 |
한국공업화학회 |
| 학술대회 |
2014년 가을 (11/12 ~ 11/14, 엑스코(대구)) |
| 권호 |
18권 2호 |
| 발표분야 |
에너지저장변환-포스터 |
| 제목 |
Fabrication of electrospun nanofiber mats of polyethylene glycol/polyvinylidene fluoride (PEG/PVDF) core/sheath structure used for thermal energy storage |
| 초록 |
The nanofiber mats with core/sheath structure based on polyethylene glycol/polyvinylidene fluoride (PEG/PVDF) were successfully fabricated via coaxial electrospinning. In this study, the mixture of PEG600 and PEG1000 (PEGs) was prepared as a phase change material (PCM) in the core and PVDF acts as the sheath, which was helped prevent PEGs leakage from the fibers. FE-SEM and TEM images indicated that cylindrical and smooth surface nanofibers are obtained and PEGs mixture is encapsulated completely by PVDF sheath. The composition of the sheath layer was further confirmed by XPS analysis and water contact angle (WCA) testing. The DSC thermograms shown that the fusion heat values of the nanofibers were increased with the increasing of PEGs content in the fibers. Furthermore, the temperatures of phase transitions and fusion heat values were insignificantly changed after 100 heating/cooling cycles, which meant that the nanofibers have high thermal stability. In term of mechanical properties, the stress-strain curves of the nanofiber mats shown outstanding tensile properties. The results demonstrated that the PEGs/PVDF core/sheath structure nanofiber mats have extensive applications in thermal energy storage and the manufacture of thermo-regulating textiles. |
| 저자 |
박준서1, Thu Thi Dang1, 정옥희2
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| 소속 |
1한경대, 2순천대 |
| 키워드 |
phase change material; electrospinning; PEG; PVDF
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| E-Mail |
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