Abstract

Films of husks of Plantango ovate, Cydonia oblonga, Mimosa pudica, Cochlospermum religiosum were prepared, delignified without protein and cellulose content, and their optical properties were evaluated. UV-Vis, FTIR TGA analysis revealed that these natural materials have strong potential in fiber optics, contact lenses and human transplantation infrastructure applications, where there is need of efficient transparency, high thermal stability and good conductivity with minimum light absorption. These natural polymeric films possess significant direct and indirect optical band gap values and better optical conductivity than currently in use synthetic polymeric materials. The Refractive index of these films is also found high in the visible region in comparison to pure or composite metal-doped synthetic films. Urbach energy (Eu), Dispersion energy (Ed), Average oscillation wavelength (λ₀), and oscillation strength(S₀) of this hemicellulose based natural polymeric films were found to be appropriate for such optical materials which are green, organic, economical and compatible to human systems.

摘要

卵形车前草、Cydonia oblonga、含羞草、Cochlospermum religiosum的外壳薄膜制备，脱木质素，不含蛋白质和纤维素，并评估它们的光学性能。UV-Vis、FTIR TGA 分析表明，这些天然材料在光纤、隐形眼镜和人体移植基础设施应用中具有强大的潜力，这些应用需要高效的透明度、高热稳定性和良好的导电性，同时将光吸收降至最低。这些天然聚合物薄膜比目前使用的合成聚合物材料具有显着的直接和间接光学带隙值和更好的光导率。与纯金属或复合金属掺杂合成薄膜相比，这些薄膜在可见光区域的折射率也很高。Urbach 能量 (Eu)、色散能 (Ed)、平均振荡波长 (λ ₀₎) 和这种基于半纤维素的天然聚合物薄膜的振荡强度 (S ₀ ) 被发现适用于这种绿色、有机、经济且与人体系统兼容的光学材料。