公开(公告)号：WO2022198169A1

公开(公告)日：2022-09-22

申请号：PCT/US2022/070956

申请日：2022-03-04

Applicant: VIRGINIA TECH INTELLECTUAL PROPERTIES INC.

Inventor： LIU, Guoliang ,  XU, Zhen ,  ESKER, Alan Roger ,  LIU, Gehui

IPC: B01D67/00 ,  B01J20/26

Abstract: In one aspect, the disclosure relates to azide-containing poly(ether imide) polymers (PEIs; N3-PEI-N3) synthesized via a heterogenous diazotizationazidation reaction. In one aspect, the azide-containing PEIs can be solution-cast into films and then thermally crosslinked. In a further aspect, the crosslinked PEIs (X-PEIs) exhibit superior thermal and mechanical properties. In a still further aspect, X-PEIs display outstanding resistance to classical solvents for conventional PEI, including THF, DCM, chloroform, DMF, and NMP. In another aspect, with an initial number average molecular weight (Mn) of 8.9 kDa, the disclosed azide-containing PEIs have a high crosslinking density and thus possess desirable thermal, mechanical, and solvent resistance properties.