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Enhancing the Biomimetic Mechanics of Bottlebrush Graft‐Copolymers through Selective Solvent Annealingстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 27 ноября 2024 г.
- Авторы: Umarov Akmal Z., Collins Joseph, Nikitina Evgeniia A., Moutsios Ioannis, Rosenthal Martin, Dobrynin Andrey V., Sheiko Sergei S., Ivanov Dimitri A.
- Журнал: Macromolecular Rapid Communications
- Год издания: 2024
- Издательство: John Wiley & Sons Ltd.
- Местоположение издательства: United Kingdom
- Номер статьи: 1022-1336
- DOI: 10.1002/marc.202400569
- Аннотация: Self-assembled networks of bottlebrush copolymers are promising materials for biomedical applications due to a unique combination of ultra-softness and strain-adaptive stiffening, characteristic of soft biological tissues. Transitioning from ABA linear-brush-linear triblock copolymers to A-g-B bottlebrush graft copolymer architectures allows significant increasing the mechanical strength of thermoplastic elastomers. Using real-time synchrotron small-angle X-ray scattering, it is shown that annealing of A-g-B elastomers in a selective solvent for the linear A blocks allows for substantial network reconfiguration, resulting in an increase of both the A domain size and the distance between the domains. The corresponding increases in the aggregation number and extension of bottlebrush strands lead to a significant increase of the strain-stiffening parameter up to 0.7, approaching values characteristic of the brain and skin tissues. Network reconfiguration without disassembly is an efficient approach to adjusting the mechanical performance of tissue-mimetic materials to meet the needs of diverse biomedical applications.
- Добавил в систему: Умаров Акмаль Зокиржонович