Abstract
Semi-transparent composite film from rice straw-based microfibrillated cellulose and chitosan (MFC/CS) has been demonstrated to be a promising candidate light management material for the next generation optical engineering applications. Here, the lignin-modified MFC was prepared successfully through a green method, in which the MFC was first extracted using dilute sodium hydroxy solution on a homogenizer at 5000 rpm. The dissolved lignin was then deposited on the MFC surface by neutralizing it with a dilute hydrochloric acid solution. MFCs were obtained with diameters ranging from 2-5 μm and lengths up to 200 μm. Decoloration of lignin by removing its chromophore groups was conducted using peracetic acid treatment using a mixture of hydrogen peroxide and acid acetic with a volume ratio of 4:1. The MFC film shows good transparency and excellent diffusing effects with MFC/CS weight ratios of 1:3 and 1:1.
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