4D Printing of Shape-Memory Semi-Interpenetrating Polymer Networks Based On Aromatic Heterochain Polymers

Bardakova, K.N.; Kholkhoev, B.C.; Farion, I.A.; Epifanov, E.O.; Korkunova, O.S.; Efremov, Y.M.; Minaev, N.V.; Solovieva, A.B.; Timashev, P.S.; Burdukovskii, V.F.

Статья опубликована в высокорейтинговом журнале

Информация о цитировании статьи получена из Web of Science, Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 8 декабря 2021 г.

Авторы: Bardakova Kseniia N., Kholkhoev Bato Ch, Farion Ivan A., Epifanov Evgenii O., Korkunova Olga S., Efremov Yuri M., Minaev Nikita V., Solovieva Anna B., Timashev Peter S., Burdukovskii Vitaliy F.
Журнал: ADVANCED MATERIALS TECHNOLOGIES
Год издания: 2021
Первая страница: 2100790
DOI: 10.1002/admt.202100790
Аннотация: Most of the presently known thermosensitive shape-memory polymers suitable for 4D printing have insufficient mechanical strength and thermal stability that restricts their potential areas of application. Here, new photosensitive compositions (PSCs) based on aromatic heterochain polymers – poly-N,N′-(m-phenylene)isophthalamide (MPA) or poly-2,2′-(p-oxydiphenylene)-5,5′-dibenzimidazole (OPBI) – for DLP printing are proposed. Thermal post-curing and supercritical carbon dioxide (scCO2) are used for post-processing of the structures. During the scCO2 treatment the removal of unreacted monomeric component (N,N-dimethylacrylamide) and its uncrosslinked oligomers is accompanied by the preservation of the initial degree of crosslinking. The more stable shrinkage is observed for the combined post-processing method (T°+scCO2) in the case of OPBI-PSC and after the heat treatment for MPA-PSC specimens. The method of post-processing and the nature of the heterochain polymer strongly affect the mechanical properties and thermal resistance of the structures. The tensile strength has the maximum value after the thermal post-treatment (101.1 ± 7.1 and 78.4 ± 5.1 MPa of OPBI-PSC and MPA-PSC, respectively). The intense destruction of the materials is observed at 393 and 408 °C for MPA-PSC and OPBI-PSC, respectively. Moreover, the 4D-printed structures exhibit excellent shape memory performance at transition temperatures >100 °C, thus have a great potential for the use in aerospace, robotics, sensorics.
Добавил в систему: Тимашев Петр Сергеевич

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4D Printing of Shape-Memory Semi-Interpenetrating Polymer Networks Based On Aromatic Heterochain Polymersстатья

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