In Situ Characterization of the Reaction-Diffusion Behavior during the Gradient Interphase Formation of Polyetherimide with a High-Temperature Epoxy System

Autor:	Lucian Zweifel, Christian Brauner, Julie Teuwen, Clemens Dransfeld
Rok vydání:	2022
Předmět:	QD241-441 Polymers and Plastics Interphase formation Characterization Raman spectroscopy Organic chemistry thermoset resin thermoplastic interphase formation characterization optical properties/techniques reaction-diffusion General Chemistry Thermoplastic Reaction-diffusion Thermoset resin Optical proper-ties/techniques
Zdroj:	Polymers; Volume 14; Issue 3; Pages: 435 Polymers, 14(3) Polymers, Vol 14, Iss 435, p 435 (2022)
ISSN:	2073-4360
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a294eb72c88935ec822d92ebf2c2cdd8 https://pubmed.ncbi.nlm.nih.gov/35160425 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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