Date of Award
Spring 5-2016
Degree Type
Honors College Thesis
Department
Polymers and High Performance Materials
First Advisor
Jeff S. Wiggins
Advisor Department
Polymers and High Performance Materials
Abstract
The formation of glassy polymer networks such as epoxy-amine systems may be altered by varying the temperature ramp rate that is used to cure the system. As a result, the physical and mechanical properties of the network may be changed. This work synthesized the epoxy resins diglycidyl ether of bisphenol A (DGEBA) with the amine curing agent 4,4-diaminodiphenyl sulfone (4,4’-DDS) from 35°C to 180°C using varying temperature ramp rates. Mechanical and structural properties of these samples were then analyzed to determine the effect the different temperature ramp rates had on the formation and properties of the thermoset matrix. These aspects were analyzed using Dynamic Mechanical Analysis (DMA), Differential Scanning Calorimetry (DSC) and real-time Fourier Transform Near-Inferred (NIR) Spectroscopy.
It was found that higher temperature ramp rates during the cure cause the epoxide function groups to be consumed more rapidly. Also, these faster rates create materials that are less homogenized and have a lower glass transition temperature.
Copyright
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Recommended Citation
Van de Voorde, Kristen M., "The Effect of Cure Rate on Glassy Polymer Networks" (2016). Honors Theses. 361.
https://aquila.usm.edu/honors_theses/361