Vitrimers trigger covalent bonded bio-silica fused composite materials for recycling, reshaping, and self-healing applications

Abstract

Bio-based benzoxazines used eugenol and incorporated bio-silica (BS) and trimethylolpropane-tris(3-mercaptopropionate) (SH) for self-healing, recycling, and reshaping applications.

Combination of Polyethylenimine and Vanillin-Based Benzoxazine as a Straightforward Self-Healable System with Excellent Film-Forming Ability

“…These hydrogen bonds are useful in designing materials when considering supramolecular attraction for the final materials. − By these stated advantages, although benzoxazine resins are known as alternative materials for curable systems, such as phenolic resins, epoxies, and bismaleimide resins, they can also function as smart materials with proper molecular designs. Accordingly, PBzs have been shown to exhibit shape memory − and electro-responsive, , superhydrophobic, − and self-healing properties. − For example, the introduction of iron­(III) into main chain PBzs enabled both self-healing and shape recovery through dynamic metal–ligand interactions . Moreover, the inherent hydrogen bonds of PBzs were utilized to fabricate autonomic self-healable thermosets by adding carboxylic acid-based benzoxazine monomers before curing the system .…”

Preparation and Performances of Degradable Polybenzoxazine by Ring-Opening Metathesis Polymerization

“…Currently, one common method to achieve degradability in thermosetting resins is by introducing dynamic covalent bonds into their cross-linking structure. Some typically dynamic covalent bonds include ester bonds, − disulfide bonds, − acetal bonds, − and imine bonds. − Adjaoud et al synthesized a quadri-telechelic benzoxazine-terminated polyethylene glycol monomer containing an ester bond and side chain aliphatic hydroxyl group by a solvent-free two-step method. The results show that it has good self-healing and reprocessing properties, but the synthesis process is complex, and the thermal decomposition temperature of the polymer is low (250 °C).…”

Design of Rectifiable Bio-based Polybenzoxazine for Stimulated Self-Healing and Shape Memory applications with antimicrobial activity

“…Numerous sustainable phenolic sources have been used for to synthesis a bio-based benzoxazine monomer such as eugenol [11], chavicol [20], vanillin [21,22], urushiol [23,24], resveratrol [25], guaiacol [26,27], cinnamic/cinnamates [28], coumarin [29], etc., The sustainable and recyclable benzoxazines, obtained from the abundant bio-waste with low cost of raw materials serve as excellent substitutes for synthetic monomer. The one of the bio-waste phenolic sources was cardanol and occurred from cashew nut shell consist of an unsaturated alkyl chain [30][31][32] and the presence of an unsaturated alkyl chain in cardanol was used to produce a variety of products [33,34].…”

“…Polybenzoxazine was a polymeric material that consists of benzoxazine monomers and has many applications [10,11] in different elds such as engineering, medicine, aerospace and packing industries.…”