New generation nano-filler polymer composites have many applications including biomedical, electronic and maritime related applications because of their mechanical, electronic and optical properties. The properties of composites were investigated as a function of nano-filler content. Among these, tungsten disulfide (WS2) has the potential to be used as a component in electronic devices owing to its high electron mobility and easily tunable optical band gap energy. Tungsten disulfide (WS2)- Polyacrylamide (PAAm) composite was prepared using free radical co-polymerization and wet laboratory methods with WS2 content. Composites were characterized for mechanical and optical properties using an Elasticity Instrument and UV-vis Spectrophotometer, respectively. Elastic modulus was modeled by a statistical thermodynamics model. Tauc’s and Urbach’s Tail model for direct transition were used to model for the optical band gap. In this study, the swelling and WS2 effect on the optical band gap and elasticity of WS2 - PAAm composites were investigated. It was observed that the elasticity presented a reversed behavior of optical band gap energies with respect to WS2 content. For the applications of nano-filler doped polymer composites in flexible electronic devices, WS2 content strongly influences the mechanical and optical properties.

中文翻译：

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WS2 对膨胀 PAAm 复合材料的弹性和光学带隙能量的依赖性

新一代纳米填料聚合物复合材料因其机械、电子和光学特性而具有许多应用，包括生物医学、电子和海事相关应用。作为纳米填料含量的函数，研究了复合材料的性能。其中，二硫化钨（WS2）由于其高电子迁移率和易于调节的光学带隙能量而具有用作电子器件组件的潜力。使用自由基共聚和湿实验室方法制备二硫化钨 (WS2)-聚丙烯酰胺 (PAAm) 复合材料，其中 WS2 含量。分别使用弹性仪器和紫外可见分光光度计对复合材料的机械和光学性能进行表征。弹性模量由统计热力学模型建模。Tauc's 和 Urbach's Tail 直接跃迁模型用于模拟光学带隙。在这项研究中，研究了膨胀和 WS2 对 WS2-PAAm 复合材料的光学带隙和弹性的影响。观察到弹性呈现出相对于 WS2 含量的光学带隙能量的相反行为。对于纳米填料掺杂的聚合物复合材料在柔性电子器件中的应用，WS2 含量强烈影响机械和光学性能。