Synthesis and characterization of hierarchical porous structure of polydimethylsiloxane (PDMS) sheets via two-step phase separation method

This paper reports the synthesis and characterization of the hierarchical porous structure of polydimethylsiloxane (PDMS) sheets. A two-step phase separation synthesis protocol is designed based on a ternary solution of PDMS that contains both a nonsolvent and solvent. Tetrahydrofuran (THF) and Toluene with various mixing ratios are utilized as a solvent phase for inducing two-step phase separation. Two distinct pore size distributions are...