{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,11]],"date-time":"2026-07-11T04:40:44Z","timestamp":1783744844906,"version":"3.55.0"},"reference-count":24,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2023,5,8]],"date-time":"2023-05-08T00:00:00Z","timestamp":1683504000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Science Committee of Kazakhstan\u2019s Ministry of Science and Higher Education","award":["AP19679844"],"award-info":[{"award-number":["AP19679844"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>New polymeric materials formation by controlling their properties is the primary and most challenging problem in developing a methodology for synthesizing a chosen technology and its use. The combined effect of high-energy electron radiation and tensile stress will cause a decrease in crystallinity and the breakage of chemical bonds in polyimide film macromolecules and is a new approach in their production technology. The effect of uniaxial tension and electron irradiation on the modification of polyimide film at room temperature was studied. Irradiation of the films caused an increase in the intensity of the IR spectrum by ~2\u20136 times and an increase in the width of the bands. The intensity in the range of 1700\u20133500 cm\u22121 increased, indicating an increase in the content of radicals as a result of irradiation. The amplitudes of the electron paramagnetic resonance signal from non-irradiated films increased from 3 \u00d7 103 to 5 \u00d7 103 as a result of uniaxial tension to fracture, indicating an increase in radicals in the material. The lines of the electron paramagnetic resonance spectrum shifted from 3475.0 cm\u22121 to 3512.5 cm\u22121, with a simultaneous decrease in the signal\u2019s amplitude from 6 \u00d7103 to 4 \u00d7 103, as a result of the electron irradiation of the films, followed by their subjection to tension. This was due to a decrease in the concentration of the radicals of the =N-H and \u2013N-H2 groups until their disappearance and the formation of new ones.<\/jats:p>","DOI":"10.3390\/polym15092223","type":"journal-article","created":{"date-parts":[[2023,5,8]],"date-time":"2023-05-08T05:09:19Z","timestamp":1683522559000},"page":"2223","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Modification of Macromolecules of Polyimide Films by Electron Irradiation"],"prefix":"10.3390","volume":"15","author":[{"given":"Roza","family":"Abdulkarimova","sequence":"first","affiliation":[{"name":"Institute of Experimental and Theoretical Physics, Al-Farabi Kazakh National University, 71, Al-Farabi Ave., Almaty 050040, Kazakhstan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Abyl","family":"Muradov","sequence":"additional","affiliation":[{"name":"Institute of Experimental and Theoretical Physics, Al-Farabi Kazakh National University, 71, Al-Farabi Ave., Almaty 050040, Kazakhstan"},{"name":"Research Centre \u201cKazAlfaTech LTD\u201d, Karasu Str., 41A, Almaty 050020, Kazakhstan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kanat","family":"Mukashev","sequence":"additional","affiliation":[{"name":"Institute of Experimental and Theoretical Physics, Al-Farabi Kazakh National University, 71, Al-Farabi Ave., Almaty 050040, Kazakhstan"},{"name":"Research Centre \u201cKazAlfaTech LTD\u201d, Karasu Str., 41A, Almaty 050020, Kazakhstan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5642-3481","authenticated-orcid":false,"given":"Gulmira","family":"Yar-Mukhamedova","sequence":"additional","affiliation":[{"name":"Institute of Experimental and Theoretical Physics, Al-Farabi Kazakh National University, 71, Al-Farabi Ave., Almaty 050040, Kazakhstan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nursultan","family":"Japashov","sequence":"additional","affiliation":[{"name":"Institute of Experimental and Theoretical Physics, Al-Farabi Kazakh National University, 71, Al-Farabi Ave., Almaty 050040, Kazakhstan"},{"name":"Faculty of Education and Humanities, Suleyman Demirel University, Almaty 040900, Kazakhstan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,5,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"23","DOI":"10.35164\/0554-2901-2019-9-10-23-26","article-title":"Formation of the properties of the structure of disperse-filled polymer composites","volume":"9\u201310","author":"Gabibov","year":"2019","journal-title":"Plast. 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