In the present work, the preparation of lignin nanoparticles (LNP) reinforced Poly(methyl methacrylate) (PMMA) nanocomposites, obtained by combining solvent-free radical polymerization, micro extrusion and hot press methods through a masterbatch approach, was reported. Results from Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR) and Gel Permeation Chromatography (GPC) evidenced the successful grafting of LNP on MMA, confirmed by the higher glass transition temperatures observed by DSC in LNP grafted PMMA (PMMA-g-LNP) systems. Microstructural characterization proved good LNP dispersion in PMMA, achieved by means of the adopted masterbatch procedures. Furthermore, results from optical, thermal and mechanical characterization of the resulted PMMA nanocomposites confirmed improved hardness values, enhanced UV resistance, better thermal and scratch resistance for PMMA/LNP nanocomposites, opening the possibility of using these systems in many different sectors, such as automotive, flooring, acrylic glasses and lenses.

在目前的工作中，已经报道了通过结合溶剂-自由基聚合，微挤出和热压法通过母料法获得的木质素纳米粒子（LNP）增强的聚甲基丙烯酸甲酯（PMMA）纳米复合材料的制备。傅里叶变换红外光谱（FTIR），核磁共振（NMR）和凝胶渗透色谱（GPC）的结果证明了LNP在MMA上的成功接枝，这是由DSC在LNP接枝的PMMA（PMMA-g）中观察到的更高的玻璃化转变温度所证实的。 -LNP）系统。显微结构表征证明了LNP在PMMA中具有良好的分散性，这是通过采用的色母粒程序实现的。此外，对所得PMMA纳米复合材料进行光学，热学和机械表征的结果证实，硬度值有所改善，