Electrospun Polyethylene Glycol/Polyvinyl Alcohol Composite Nanofbrous Membranes as Shape-Stabilized Solid–Solid Phase Change Materials
writer：Junwen Huang，Houyong Yu，Somia Yassin Hussain Abdalkarim，Jaromir Marek，Jiri Militky，Yingzhan Li，Jumi
keywords：Solid-solid PCMs，Electrospinning，Polyethylene glycol
source：期刊
specific source：Advanced Fiber Materials
Issue time：2020年
In this work, shape-stabilized solid-solid phase change materials (PCMs)
were fabricated by simply electrospinning poly-ethylene glycol (PEG) and
polyvinyl alcohol (PVA). Owing to the strong hydrogen bonds and entanglement
between those molecular chains of PEG and PVA, PEG was packaged by PVA. The
morphological structures, thermal stability and thermal energy storage
properties of those fbers were investigated. SEM results showed that those
electrospun PVA/PEG composite membranes hold a three-dimensional nonwoven web
structure even the content of PEG as high as 70%. The thermal energy storage
ability of those composite fbers increased with the increase of the content of
PEG. The heat enthalpies of PEG/PVA=7/3 were as high as 78.806 J/g. Moreover,
those composite fbers had excellent thermal stability. After 100 heating and
cooling cycles, there was almost no obvious change in the melting enthalpy and
crystallization enthalpy. Those fbers still maintained good thermal regulation.
The simple preparation process, low cost of raw materials and excellent
stability