High‐Performance Vitrimeric Benzoxazines for Sustainable Advanced Materials: Design, Synthesis, and Applications
نویسندگان
چکیده
Polybenzoxazines are high-performance materials capable of replacing conventional thermosets such as phenolics, epoxies, and bismaleimides in composites manufacturing due to their excellent thermomechanical chemical behavior. Their versatility compatibility with biobased precursors make them an attractive option composite matrices. Like other thermosets, polybenzoxazines not recyclable cannot be reprocessed. Incorporating dynamic bonds benzoxazine monomers can produce vitrimeric polybenzoxazines, which potentially overcome this limitation tuned exhibit smart functionalities self-healing shape memory. Dynamic bond exchange mechanisms for vitrimer development transesterification, imine bond, disulfide exchange, transamination, transcarbamoylation, transalkylation, olefin metathesis, transcarbonation, siloxane-silanol boronic ester, silyl ether dioxaborolane metathesis applicable chemistry, transesterification having successfully vitrimerized benzoxazines topological transitions at −8.5 88 °C, respectively. Benzoxazine vitrimers featuring glass 193, 224, 222–236 °C now known. These place the forefront reprocessable thermosetting polymers
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ژورنال
عنوان ژورنال: Macromolecular Materials and Engineering
سال: 2022
ISSN: ['1439-2054', '1438-7492']
DOI: https://doi.org/10.1002/mame.202200534