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- Title
Surface energy properties of lignin particles studied by inverse gas chromatography and interfacial adhesion in polyester composites with electromagnetic transparency.
- Authors
Suzuki, Mayu; Kondor, Anett; Sakuraba, Yuma; Rojas, Orlando J.; Ago, Mariko
- Abstract
We introduce a simple spray drying method for the scaleup production of spherical organic (lignin) particles with sizes between 0.85 and 1.57 µm. We assess the surface energy of the lignin particles by inverse gas chromatography to reveal their role in composites synthesized with unsaturated polyester. Such nanocomposites are shown to be transparent to electromagnetic irradiation (millimeter wave bands). The permittivity and tanδ of the composite material reached values 3.01 and 0.01 at 28 GHz with 10% lignin content. Vinyl groups were introduced on the surface of the particles to achieve enhanced interfacial adhesion, and resulted in a reduced relative permittivity (2.75). Together with wave interactions, the mechanical and thermal properties of the composites are put in perspective, opening new opportunities in the development of bio-based devices for 5G high-speed communication.
- Subjects
INVERSE gas chromatography; SURFACE energy; SURFACE properties; UNSATURATED polyesters; LIGNINS; VINYL polymers; LIGNIN structure
- Publication
Cellulose, 2022, Vol 29, Issue 5, p2961
- ISSN
0969-0239
- Publication type
Article
- DOI
10.1007/s10570-022-04429-5