公开(公告)号：US12104283B2

公开(公告)日：2024-10-01

申请号：US16701553

申请日：2019-12-03

Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE

Inventor： Izumi Ichinose ,  Xinsheng Peng ,  Sadaki Samitsu ,  Rui Zhang

IPC: D01D5/00 ,  B01D53/02 ,  B01J20/26 ,  B01J20/28 ,  B01J20/30 ,  B29C35/16 ,  B29C67/20 ,  B82Y30/00 ,  B82Y40/00 ,  C08J9/26 ,  D01F6/22

CPC classification number: D01D5/00 ,  B01D53/02 ,  B01J20/262 ,  B01J20/28007 ,  B01J20/28023 ,  B01J20/28057 ,  B01J20/3085 ,  B29C35/16 ,  B29C67/202 ,  B82Y30/00 ,  C08J9/26 ,  D01F6/22 ,  B01D2253/202 ,  B01D2257/504 ,  B01D2257/7025 ,  B82Y40/00 ,  C08J2201/0482 ,  Y02C20/20 ,  Y02C20/40 ,  Y02P70/62 ,  Y10T428/2975

Abstract: The invention provides networked polymeric nanofibers having a structure in which amorphous polymeric fibers are branched at multiple sites and having a diameter of from 1 nanometer to 100 nanometers.
A solution of a polymer such as polystyrene in a good solvent thereof is rapidly frozen to form a nanoscale phase-separation structure of the polymer and the frozen solvent. The networked polymeric nanofibers can then be obtained upon removing the frozen solvent.