On February 29, 2020, Jikei, Mitsutoshi; Sato, Ai; Ha, Lam Tho; Takeda, Mao; Matsumoto, Kazuya; Sugimoto, Masataka; Sato, Hiroaki; Matsuba, Go published an article.Safety of 4,4′-Sulfonylbis(chlorobenzene) The title of the article was Synthesis and properties of long-chain-branched poly(aryl ether sulfone)-poly(tetrahydrofuran) multiblock copolymers. And the article contained the following:
Long-chain-branched poly(aryl ether sulfone)-poly(tetrahydrofuran) multiblock copolymers (PES-BPTHF) composed of hard linear and soft branching segments were synthesized from bromo-terminated poly(tetrahydrofuran) and hydroxy-terminated poly(aryl ether sulfone). A study on the effect of concentration on polymerization behavior revealed that soluble powder was obtained at the optimized reaction concentration of 7 wt%. Gelation and intramol. cyclization were observed at high and low concentrations, resp. The microphase-separated morphol. of PES-BPTHF was confirmed by at. force microscopy, small-angle X-ray scattering, and dynamic mech. anal. measurements. Fewer entangled poly(tetrahydrofuran) segments were detected in PES-BPTHF than in PES-PTHF by SAXS, DMA and tensile measurements. Rheol. measurements suggested high chain entanglement of PES-BPTHF in its melt phase. It is interesting to note that the polymer chains in the soft domains become less entangled and more reminiscent of hyperbranched architectures, whereas the overall chain entanglements are increased due to the long-chain-branched structure. The experimental process involved the reaction of 4,4′-Sulfonylbis(chlorobenzene)(cas: 80-07-9).Safety of 4,4′-Sulfonylbis(chlorobenzene)
The Article related to branched polyaryl ether sulfone polytetrahydrofuran multiblock copolymer preparation property, Chemistry of Synthetic High Polymers: Organic Condensation and Step Polymerization and other aspects.Safety of 4,4′-Sulfonylbis(chlorobenzene)
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics