摘要:
Disclosed herein is a foam that includes a polysiloxane block copolymer; the polysiloxane block copolymer including a first block that comprises a polysiloxane block and a second block that includes an organic polymer; the second block not containing a polysiloxane; the polysiloxane block being about 5 to about 45 repeat units; the foam having average pore sizes of less than or equal to about 100 nanometers.