The effect of silylation on cellulose exfoliation behavior via wet-ball mill method

초록

Microcrystalline cellulose has some drawbacks such as poor wettability, lower thermal stability, moisture absorption, and lower compatibility between matrix and cellulose. To overcome these drawbacks, using a tremendous hydroxyl group of cellulose as reaction sites. Silylation is the best way to improve the thermal stability of cellulose and using the hydroxyl group of cellulose as reaction sites. Moreover, expecting the exfoliation behavior of cellulose by reducing the hydroxyl group and its hydrogen bonds. The reaction system uses a wet-ball milling system, mechanochemical and eco-friendly method. After the ball milling reaction, the specific area increases at least 10 times, and the degradation temperature (T5%, 50%℃) moves to more high temperature. In addition, the compatibility is also enhancing due to the high specific surface area. Tensile strength of silicone foam (SF) and silylated cellulose containing SF, extremely increase 9 to 397 kPa.