The present work is aimed to develop new composite films based on pectin and functionalized graphene oxide (GOf) by using a simple casting method. The non-covalent functionalization of graphene oxide (GO) was performed by using a non-ionic surfactant (Tergitol NP9) and therefore the interaction between GO and the polymer matrix was significantly enhanced. X-ray diffraction (XRD), X-ray photoelectron spectrometry (XPS) and Fourier-transform infrared (FT-IR) were used to prove the GO functionalization. The functionalization was evidenced also by Raman spectrometry and thermogravimetric analysis (TGA). According to the mechanical tests, an improvement of the Young’s modulus was recorded even at low loading of GOf within the pectin matrix which indicates a strong interaction between the polymer and GOf. By incorporation of GOf within pectin a modification of the morphology of the composite materials was observed by Atomic Force Microscopy (AFM) and Scanning Electron Microscopy (SEM) analysis.

本工作旨在通过使用简单的流延方法来开发基于果胶和功能化氧化石墨烯（GOf）的新型复合膜。氧化石墨烯（GO）的非共价官能化是通过使用非离子表面活性剂（Tergitol NP9）进行的，因此GO与聚合物基质之间的相互作用得到了显着增强。X射线衍射（XRD），X射线光电子能谱（XPS）和傅立叶变换红外光谱（FT-IR）被用来证明GO的功能化。拉曼光谱和热重分析（TGA）也证明了功能化。根据机械测试，即使在果胶基质中GOf的低负载下，也记录了杨氏模量的改善，这表明聚合物和GOf之间有很强的相互作用。