Surface energy properties of lignin particles studied by inverse gas chromatography and interfacial adhesion in polyester composites with electromagnetic transparency
Surface energy properties of lignin particles studied by inverse gas chromatography and interfacial adhesion in polyester composites with electromagnetic transparency
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DOI：
10.1007/s10570-022-04429-5
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发表时间：
2022-01
期刊：
影响因子：
5.7
通讯作者：
Mayu Suzuki;A. Kondor;Yuma Sakuraba;O. Rojas;Mariko Ago
中科院分区：
文献类型：
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作者：
Mayu Suzuki;A. Kondor;Yuma Sakuraba;O. Rojas;Mariko Ago
我们介绍了一种简单的喷雾干燥方法，用于规模化生产尺寸在0.85和1.57 µm之间的球形有机（木质素）颗粒。我们通过反相气相色谱法评估木质素颗粒的表面能，以揭示它们在用不饱和聚酯合成的复合材料中的作用。这种纳米复合材料被证明是透明的电磁辐射（毫米波段）。当木质素含量为10%时，复合材料的介电常数和介电损耗角正切在28 GHz时分别达到3.01和0.01。乙烯基基团被引入到颗粒的表面上，以实现增强的界面粘附，并导致相对介电常数降低（2.75）。与波的相互作用一起，复合材料的机械和热性能得到了充分的考虑，为5G高速通信的生物基设备的开发提供了新的机会。
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 tanδof 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.