A well-defined diamine from lignin depolymerization mixtures for constructing bio-based polybenzoxazines
نویسندگان
چکیده
The demand for high-performance materials is increasing, and most of these are petrol based. Therefore, the development highly efficient selective catalytic methods that allow access to industrially relevant polymer building blocks from complex biomass depolymerization mixtures essential. Here, we report on a robust strategy obtain 4,4?-methylenebiscyclohexanamine (MBCA) lignin oxidation its use constructing fully bio-based polybenzoxazines. consists two challenging steps: 1) funneling lignin-derived bisphenol into 4,4?-methylenebiscyclohexanol (MBC) 2) amination MBC with ammonia MBCA. renewable polybenzoxazines were prepared MBCA phenolic platform chemicals. promising, cured poly (S-MBCA), shows high glass transition temperature Tg 315°C, outstanding thermal stability (T10% = 400°C), good storage modulus (E?25°C 3.8 GPa), which competitive commercial resins.
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ژورنال
عنوان ژورنال: Chem catalysis
سال: 2021
ISSN: ['2667-1093', '2667-1107']
DOI: https://doi.org/10.1016/j.checat.2021.10.022