Polyethersulfones containing diacetylene units in its main chain: synthesis and gas permeability properties
Year: 2025
Type: article
Abstract: A series of polymers containing diacetylene-containing polyethersulfone by oxidative coupling polymerization of dipropargyloxydiphenylsulfone (BPS) and dipropargyloxy bisphenol-A (BPA) monomers were synthesized; the reaction was carried out under mild conditions and afforded high yields. Using these copolymers, films were made to determine the permeability for the following gases: CO 2 , CH 4 , N 2 , O 2 . The copolymers were amorphous and soluble in organic solvents except that the homopolymer from bis(4-propargyloxy)diphenyl sulfone was a crystalline polymer insoluble in most organic solvents. Films of copolymers were cast from solutions of each copolymer in chloroform at room temperature. The amorphous copolymer films slowly underwent cross-linking reactions in solid state during storage given a stronger mechanical force to copolymer. The relationship between cross-linking and mechanical properties was also studied. The incorporation of the diacetylene groups in the chain backbone of copolymer caused less permeability with a factor of ten times in its comparison with the polysulfones based on bisphenol-A synthesized by nucleophilic condensation, on the other hand. Moreover, the combined ease of processing and resultant stability was highlighted.
Source: Polymer Bulletin
Authors: Sandra L. Castañón-Alonso, S. Baéz-Pimiento, T. Ogawa Murata, M. E. Hernández-Rojas
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,790
Funder: Universidad Nacional de Colombia
OpenAlex ID: W4415635388