Polymerization behaviors of benzoxazine isomers based-on meta-substituted phenols

A series of benzoxazine monomers were synthesized based on 3,3′-, 3,4′-, and 4,4′-diaminodiphenylmethane and salicylic aldehyde (P-3,3′-d, P-3,4′-d, and P-4,4′-d, respectively) in order to identify the influence of the position of the amino group in an aromatic amine on the ability of the monomer to polymerize, on its behavior during the polymerization process, and on the structure and properties of the polymers [poly(P-3,3′-d), poly(P-3,4′-d), and poly(P-4,4′-d), respectively] formed during their curing. The chemical structure of all obtained benzoxazines was characterized using 1 H and 13 C NMR spectroscopy. Differential scanning calorimetry was used to study the curing process of benzoxazines as well as to determine the glass transition temperature of polymers based on them. The thermal stability of each polymer was studied by using thermogravimetric analysis. It was found that P-3,3′-d has the lowest melting point and the highest glass transition temperature for poly(P-3,3′-d), and the position of the amino group in the initial diamine does not affect the onset of the polymerization process in the studied benzoxazines. The resulting compounds can be used as components of resins for polymer matrix composites with improved properties.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Polymerization behaviors of benzoxazine isomers based-on meta-substituted phenols

Cited by 4 publications

References 44 publications

Enhancing flame retardancy and dielectric performance of epoxy resins through benzoxazine-phosphorus modification

Enhancing flame retardancy and dielectric performance of epoxy resins through benzoxazine-phosphorus modification

Polymerization behaviors and properties of benzoxazine resins based-on meta-substituted anilines

Structure–Property Relationship of Diaminodiphenylmethane-Based Benzoxazines─Precursors for High-Performance Thermoset Polymers

Contact Info

Product

Resources

About