Preparation of porous polyimide microspheres by thermal degradation of block copolymers
Source abstract
Abstract
Abstract A new preparation method has been developed for thermally stable porous polyimide microspheres. Porous polyimide microspheres were prepared using triblock copolymers that consisted of a thermally stable polyimide derived from pyromellitic dianhydride/4,4′-oxydianiline as the continuous phase and a thermally labile polyether as the dispersed phase. Spheres of copolymers were generated in a non-aqueous emulsion and then gradually heated to complete the imidization to form a microphase-separated structure. Subsequently, thermal treatment at a slightly reduced pressure removed the labile blocks and produced pores. Under suitable decomposition conditions, the pore size of the porous polyimide was in the range of 200–400 nm.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Synthesis and properties of polymers · Silicone and Siloxane Chemistry · Membrane Separation and Gas Transport
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (30)
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