Atta Ali, Abdelhamied Mostufa M, Abdelreheem Ahmed M, Berber Mohamed R
Physics Department, College of Science, Jouf University, Sakaka P.O. Box: 2014, Saudi Arabia.
Radiation Physics Department, National Center for Radiation Research and Technology (NCRRT), Atomic Energy Authority (AEA), Cairo P.O. Box: 29, Egypt.
Polymers (Basel). 2021 Apr 10;13(8):1225. doi: 10.3390/polym13081225.
In order to potentiate implementations in optical energy applications, flexible polymer composite films comprising methyl cellulose (MC), polyaniline (PANI) and silver nanoparticles (AgNPs) were successfully fabricated through a cast preparation method. The composite structure of the fabricated film was confirmed by X-ray diffraction and infrared spectroscopy, indicating a successful incorporation of AgNPs into the MC/PANI blend. The scanning electron microscope (SEM) images have indicated a homogenous loading and dispersion of AgNPs into the MC/PANI blend. The optical parameters such as band gap (Eg), absorption edge (Ed), number of carbon cluster (N) and Urbach energy (Eu) of pure MC polymer, MC/PANI blend and MC/PANI/Ag films were determined using the UV optical absorbance. The effects of AgNPs and PANI on MC polymer linear optical (LO) and nonlinear optical (NLO) parameters including reflection extinction coefficient, refractive index, dielectric constant, nonlinear refractive index, and nonlinear susceptibility are studied. The results showed a decrease in the band gap of MC/PANI/AgNPs compared to the pure MC film. Meanwhile, the estimated carbon cluster number enhanced with the incorporation of the AgNPs. The inclusion of AgNPs and PANI has enhanced the optical properties of the MC polymer, providing a new composite suitable for energy conversion systems, solar cells, biosensors, and nonlinear optical applications.
为了增强在光能应用中的性能，通过流延制备方法成功制备了包含甲基纤维素（MC）、聚苯胺（PANI）和银纳米颗粒（AgNPs）的柔性聚合物复合薄膜。通过X射线衍射和红外光谱证实了制备薄膜的复合结构，表明AgNPs成功掺入MC/PANI共混物中。扫描电子显微镜（SEM）图像显示AgNPs在MC/PANI共混物中均匀负载和分散。使用紫外光吸收测定了纯MC聚合物、MC/PANI共混物和MC/PANI/Ag薄膜的光学参数，如带隙（Eg）、吸收边（Ed）、碳簇数（N）和乌尔巴赫能量（Eu）。研究了AgNPs和PANI对MC聚合物线性光学（LO）和非线性光学（NLO）参数的影响，包括反射消光系数、折射率、介电常数、非线性折射率和非线性极化率。结果表明，与纯MC薄膜相比，MC/PANI/AgNPs的带隙减小。同时，随着AgNPs的掺入，估计的碳簇数增加。AgNPs和PANI的加入增强了MC聚合物的光学性能，提供了一种适用于能量转换系统、太阳能电池、生物传感器和非线性光学应用的新型复合材料。
