Enhanced thermal conductivity of waste sawdust-based composite phase change materials with expanded graphite for thermal energy storage

Bioresources and Bioprocessing

Table 2 Mass fraction of PEG and time required for the ethanol solution with PEG to diffuse into the supporting materials

Supporting material	Maximum mass fraction of PEG (wt%)	Time required for the ethanol solution with PEG to diffuse into the supporting material(s)
Hydroxyapatite	70 (Wang et al. 2017)	7
Calcium silicate	70 (Qian et al. 2015b)	10
Active carbon	70 (Feng et al. 2011)	11
Sawdust	80	2