In situ characterization of the reaction-diffusion behavior during the gradient interphase formation of polyetherimide with a high-temperature epoxy system
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Authors
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Publication date
21.01.2022
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01A - Journal article
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Parent work
Polymers
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Volume
14
Issue / Number
3
Pages / Duration
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MDPI
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Abstract
This study presents two novel methods for in situ characterization of the reaction-diffusion process during the co-curing of a polyetherimide thermoplastic interlayer with an epoxy-amine thermoset. The first method was based on hot stage experiments using a computer vision point tracker algorithm to detect and trace diffusion fronts, and the second method used space- and time-resolved Raman spectroscopy. Both approaches provided essential information, e.g., type of transport phenomena and diffusion rate. They can also be combined and serve to elucidate phenomena occurring during diffusion up to phase separation of the gradient interphase between the epoxy system and the thermoplastic. Accordingly, it was possible to distinguish reaction-diffusion mechanisms, describe the diffusivity of the present system and evaluate the usability of the above-mentioned methods.
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Subject (DDC)
620 - Ingenieurwissenschaften und Maschinenbau
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1879-1344
0144-8617
0144-8617
Language
English
Created during FHNW affiliation
Yes
Strategic action fields FHNW
Publication status
Published
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Peer review of the complete publication
Open access category
Gold
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Citation
ZWEIFEL, Lucian, Christian BRAUNER, Julie TEUWEN und Clemens DRANSFELD, 2022. In situ characterization of the reaction-diffusion behavior during the gradient interphase formation of polyetherimide with a high-temperature epoxy system. Polymers. 21 Januar 2022. Bd. 14, Nr. 3. DOI 10.3390/polym14030435. Verfügbar unter: https://doi.org/10.26041/fhnw-4482