Dielectric and ionic transport properties of bio-based polyurethane acrylate solid polymer electrolyte for application in electrochemical devices by Tuan Naiwi, Tuan Syarifah Rossyidah, Min, Min Aung, Rayung, Marwah, Ahmad, Azizan, Kai, Ling Chai, Lee, Mark Wun Fui, Mohd Tarmizi, Emma Ziezie, Abdul Aziz, Nor Azah