Date of Award

Winter 8-1-2022

Degree Type

Dissertation

Degree Name

Doctor of Philosophy (PhD)

School

Polymer Science and Engineering

Committee Chair

Dr. Jeffrey S. Wiggins

Committee Chair School

Polymer Science and Engineering

Committee Member 2

Dr. Derek L. Patton

Committee Member 2 School

Polymer Science and Engineering

Committee Member 3

Dr. Sarah E. Morgan

Committee Member 3 School

Polymer Science and Engineering

Committee Member 4

Dr. Yoan C. Simon

Committee Member 4 School

Polymer Science and Engineering

Committee Member 5

Dr. Sergei I. Nazarenko

Committee Member 5 School

Polymer Science and Engineering

Abstract

In this dissertation, a new one-pot synthesis method is developed to produce high-purity aryl ether ketone (AEK) diamines of interest. Novel benzoxazine monomers are then synthesized from the AEK diamines. The cure kinetics are investigated via DSC, and a proper cure protocol is suggested. The change in Tg of the novel benzoxazines after sequential post-cures is reported showing how important cure protocol is on the final network properties. Additionally, TGA is used to determine the char yield of the AEK benzoxazines. Finally, XPS is utilized to analyze the sure of the surface of the AEK benzoxazine. It was found that there are significant changes to the atomic concentration of the AEK benzoxazine after post-curing.

Furfurylamine-based benzoxazines (FuBOX) blends were synthesized using a continuous high-shear reactor (CHSR). The thermo-rheological properties of each blend were investigated to down-select a processable blend that retained a Tg and char yield. The down-selected blend was scaled up using a pilot-scale CSHR. The FuBOX blend was used to manufacture Carbon fiber reinforced polymer (CFRP) and carbon-carbon (C/C) composite. The mechanical and flame characteristics of the composites are discussed.

ORCID ID

0000-0001-5414-8340

Download

Available for download on Friday, December 31, 2032

Share

COinS