Modification of the Dielectric and Thermal Properties of Organic Frameworks Based on Nonterminal Epoxy Liquid Crystal with Silicon Dioxide and Titanium Dioxide

• DOI: 10.3390/polym16101320
• Publication Date: 2024-05-08T13:58:56Z
• Authors: Lidia Okrasa; Magdalena Włodarska; Maciej Kisiel; Beata Mossety-Les...
• Keywords: Titanium Dioxide; Silicon dioxide

A nonterminal liquid crystal epoxy monomer is used to create an epoxy–amine network with a typical diamine 4,4′diaminodiphenylmethane. The plain matrix compared matrices modified inorganic fillers: TiO2 or SiO2. Conditions of the curing reaction and glass transition temperatures in cured products are determined through differential scanning calorimetry broadband dielectric spectroscopy. process also followed optical electrical observations. response all investigated networks reveals segmental α-process related structural reorientation (connected transition). In products, similar associated molecular motions polar groups appears. exhibits two secondary relaxation processes (β γ). Similar were observed pure monomer. An advantage filler shorter time lower temperature required for optimal conditions. physical properties depend on presence nematic phase functional aliphatic chains. effect, such can have more flexibility internal order than classical resins. Additional modifiers this work shift above room influence fragility index both cases.