Synthesis, curing mechanism, thermal stability, and surface properties of fluorinated polybenzoxazines for coating applications

Responsive hydrogel-based microneedle dressing for diabetic wound healing

“…For the AFPBA molecule, typical IR peaks of the molecule existed, including peaks at 3478 cm −1 for O–H stretching (Fig. S4, ESI†), 1413 cm −1 for benzene ring bonding, 1348 and 1045 cm −1 for B–O bonding, 1250 and 1100 cm −1 for C–B bonding, 43 1145 cm −1 for C–F bonding, and 804, 771 and 704 cm −1 for para , ortho and meta aromatic sp 2 C–H bending, 44 respectively (Fig. 1A).…”

Molecular-level insight into the low-k properties and regulatory mechanisms of polybenzoxazines

“…[1][2][3][4] Polybenzoxazines are a type of promising material with intrinsic low dielectric constant (low-k), high flame retardancy, great adhesion, good oxidation resistance, and superior hydrophobicity. [5][6][7][8][9] Benzoxazine monomers are synthesized from phenols, primary amines, and formaldehyde via Mannich condensation. 10 The diversity of raw materials endows polybenzoxazines with flexible molecular design properties.…”

Computer-Aided Screening of Benzoxazines with High Thermal Stability and Good Processability

“…Benzoxazine, a thermosetting resin, has a structure similar to traditional phenolic resins. , However, unlike other thermosetting resins, it has a flexible molecular structure and can be synthesized from various raw materials. − Polybenzoxazines have a high glass-transition temperature, excellent thermal stability, and a high char yield. − In addition, they do not release small molecules during molding and curing and exhibit excellent performance characteristics, such as near-zero shrinkage, high flame retardancy, high tensile modulus, low water absorption, low coefficient of thermal expansion, low dielectric loss, and low dielectric constant, thus attracting the interest of researchers. − Accordingly, polybenzoxazines have been widely used in machinery, aerospace, and other industries as high-temperature-resistant polymers and polymer composites. − …”