Mixing polyethylene glycol, a hygroscopic liquid oligomer, with polypropylene glycol, which is more hydrophobic than polyethylene glycol, promotes the desorption of adsorbed water molecules. This is expected to lead to the development of energy-efficient adsorbents; this research is being led by Ikegawa.

“Accelerated Water Desorption of Oligomeric Poly(ethylene glycol) by Addition of Poly(propylene glycol) for Energy-Efficient Water Recovery Systems”
Open Access ACS Omega, 9, 1, 1084-1091(2024)
https://doi.org/10.1021/acsomega.3c07310