A SEMI-TRANSPARENT COMPOSITE FILM FROM RICE STRAW-BASED MICROFIBRILLATED CELLULOSE AND CHITOSAN AND ITS APPLICATION IN LIGHT MANAGEMENT

• Tác giả: Dang Ngoc Sy, Minh Thu Doan, Hoang Sinh Le, Van Thuan Le, Minh Hiep Nguyen, Van Khue Tran
• Ngôn ngữ: eng
• Thông tin xuất bản: Tạp chí Khoa học - Trường Đại học Sư phạm TP Hồ Chí Minh, 2023
• Mô tả vật lý: tr.386
• Bộ sưu tập: Metadata
• ID: 338824

Tóm tắt

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.