Fabrication of porous film based on poly(2,6-dimetyl-1,4-phenylene ether) block copolymer by supercritical carbon dioxide treatment
Abstract\n\t\t\t\t\n\t\t\t\t\tThe block copolymer poly(2,6-dimethyl-1,4-phenylene ether)-\n\t\t\t\t\t\tb-polydimethylsiloxane (PPE-\n\t\t\t\t\t\tb-PDMS) was prepared via hydrosilylation between poly(2,6-dimethyl-1,4-phenylene ether) (PPE) and polydimethylsiloxane (PDMS) homopolymers. The formation of block copolymer was confirmed by \n\t\t\t\t\t\t1H NMR and DSC analyses. The block copolymer films were treated by supercritical carbon dioxide (scCO\n\t\t\t\t\t\t2) at moderate temperatures under high pressure of 25\n\t\t\t\t\t\tMPa for 2\n\t\t\t\t\t\th followed by depressurization.