Abstract
The method of one-stage catalytic polycyclocondensation according to the B4 + AB scheme was used to synthesize new tetraarm star-shaped oligoimides (SOIs) with terminal amino groups and a variable average arm’s length. A new tetraamine obtained by condensation of m-phenylenediamine with a di-Boc derivative of 3,5-diaminobenzoic acid was used as a branching center (B4). 4-(3-Aminophenoxy)phthalic acid was used as the AB heteromonomer. The end amino groups were converted into carboxyl groups by treatment of the resulting reaction SOIs with trimellitic anhydride. The subsequent grafting of an oligoalkylene oxide oligomer with a terminal amino group onto them yielded the stars with block copolymer arms. The chemical and morphological structure of new block copolymer stars has been studied by IR and 1H NMR spectroscopies, TGA and SEM. It was established by the SEM method that the synthesized objects have a two-phase morphology.
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Based on the materials of the XVII International scientific-practical conference “New polymer composite materials. Mikitaev Readings” (July 5–10, 2021, Nalchik, Russia).
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 4, pp. 777–786, April, 2022.
The work was financially supported by the Russian Foundation for Basic Research (Project No. 19-03-00820A), and also by Ministry of Science and Higher Education of the Russian Federation (Topic FFSM-2021-0006).
The instrumental base of the Center for Collective Use “Center for Research of Polymers” of N. S. Enikolopov Institute of synthetic polymer materials, Russian Academy of Science was used.
No human or animal subjects were used in this research.
The authors declare no competing interests.
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Soldatova, A.E., Tsegelskaya, A.Y., Semenova, G.K. et al. Synthesis of tetraarm stars with polyetherimide-polyether block copolymer arms. Russ Chem Bull 71, 777–786 (2022). https://doi.org/10.1007/s11172-022-3478-2
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DOI: https://doi.org/10.1007/s11172-022-3478-2