Development of sustainable and antimicrobial film based on polybenzoxazine and cellulose

Recent development on bio‐based thermosetting resins

“…173 The amine group in chitosan could directly participate in the synthesis of benzoxazine as well, the resulting film showed anti-microbial and anti-fungal performance. 174 The reactivity of aldehyde group in vanillin render it has the ability to trigger other addition reactions, which provides the possibility for introducing heteroatoms and electrochemical application potential. [175][176][177] Liu et al 175 once prepared a bifunctional vanillin-derived benzoxazine via Knoevenagel condensation reaction (Scheme 18), in which the cyan and unsaturated bonds were introduced to prepare porous carbon materials for supercapacitors.…”

“…When the reaction occurs between vanillin and chitosan, the curing temperature can be greatly reduced (about 70 °C), 172 and with the integration of imine group, furfuryl amine and chitosan, the improved antibacterial properties were observed (about 125 times higher) 173 . The amine group in chitosan could directly participate in the synthesis of benzoxazine as well, the resulting film showed anti‐microbial and anti‐fungal performance 174 . The reactivity of aldehyde group in vanillin render it has the ability to trigger other addition reactions, which provides the possibility for introducing heteroatoms and electrochemical application potential 175–177 .…”

Eugenol, a Promising Building Block for Biobased Polymers with Cutting-Edge Properties

“…Interestingly, they observed that allyl moiety from eugenol also participates in the curing process improving the cross-linking density of the obtained polymers as depicted in Scheme , resulting in a surprisingly high thermal stability and char yield. Furthermore, eugenol-based polybenzoxazines showed antimicrobial properties and therefore have potential applications as films in food packaging industry. , …”

“…Furthermore, eugenol-based polybenzoxazines showed antimicrobial properties and there- fore have potential applications as films in food packaging industry. 201,202 This research group then published the synthesis of fully biobased benzoxazines synthesized from eugenol, stearyl amine, and furfurylamine by an ecofriendly process without solvents. 203,204 Additionally, the authors noted that the furan ring increased the cross-linking density in the polymer and the copolymer, improving the thermal and mechanical properties of the resulting polymers.…”

Synthesis, Curing, and Thermal Stability of Low-Temperature-Cured Benzoxazine Resins Based on Natural Renewable Resources

“…Moreover, bio-based guaiacol, bisguaiacol F, chavicol, diphenolic acids, resorcinol, catechol, and coumarine were also successfully used in the synthesis of benzoxazine resins. Compared with bio-based phenolic sources, bio-based amine sources used in the synthesis of benzoxazine resins just have furfurylamine, ,, stearylamine, , dehydroabietylamine, rosin-based amines, and chitosan. , In the past several years, our research group has also paid attention to the research of bio-based benzoxazine resins. The bio-based diphenolic acid and furfurylamine as phenolic and amine sources were used to prepare bio-based benzoxazine resins, such as diphenolic acid/aniline benzoxazine (DPA-a), phenolphthalein/furfurylamine benzoxazine (PTL-fa), and diphenol acid/furfurylamine benzoxazine (DPA-fa), and found that the carboxyl group in bisphenolic acid and the furfuran ring of furfurylamine can accelerate the ring-opening cross-linking of oxazine ring.…”