Title: Evaluating the Role of Benzoxazine Purity on Rheological and Thermomechanical Properties

Authors: Benjamin L. G. Morasch, Keith Dusenberry, Jeffrey S. Wiggins

DOI: 10.33599/nasampe/s.24.0253

Abstract: Polybenzoxazines are an attractive alternative to traditional thermosetting chemistries including epoxy and phenolic resins for applications including coatings, adhesives, composites, and flame-retardant materials due to high thermal stability, high glass transition temperatures, and modularity in molecular design. Herein, we describe the synthesis of a high purity crystalline benzoxazine monomer and systematic evaluation against a commercially relevant equivalent. Nuanced differences in network formation and the impact on processability were quantified. Additionally, rheological and resulting thermomechanical properties were investigated and reported. This work provides insight into the role of purity and assesses relevancy of transitioning chemistries from a lab to an industrially relevant process.

References: (1)Ishida, H. Overview and Historical Background of Polybenzoxazine Research. In Handbook of Benzoxazine Resins; Elsevier, 2011; pp 3–81. https://doi.org/10.1016/B978-0-444-53790-4.00046-1. (2)Liu, J.; Ishida, H. Anomalous Isomeric Effect on the Properties of Bisphenol F-Based Benzoxazines: Toward the Molecular Design for Higher Performance. Macromolecules 2014, 47 (16), 5682–5690. https://doi.org/10.1021/ma501294y. (3)Ishida, H.; Rodriguez, Y. Curing Kinetics of a New Benzoxazine-Based Phenolic Resin by Differential Scanning Calorimetry. Polymer 1995, 36 (16), 3151–3158. https://doi.org/10.1016/0032-3861(95)97878-J.

Conference: SAMPE 2024

Publication Date: 2024/05/20

SKU: TP24-0000000253

Pages: 8

Price: $16.00