Tianjin Key Laboratory of Pulp & Paper, Tianjin University of Science &Technology, Tianjin, 300457, PR China.
Tianjin Key Laboratory of Pulp & Paper, Tianjin University of Science &Technology, Tianjin, 300457, PR China.
Carbohydr Polym. 2019 Jun 15;214:159-166. doi: 10.1016/j.carbpol.2019.03.035. Epub 2019 Mar 14.
In this study, a strong and optically transparent nanopaper was fabricated from cellulose nanofibril (CNF) of corncob residues, an abundant byproduct from the processing of corncobs. Two processes were applied to successfully generate CNF from corncob residues. The resultant CNF mainly consists of fibers with diameter (height) of about 1.0 - 5.0 nm on average. The results showed that the as-prepared cellulose nanopaper (CNP) exhibited good strength, optical and thermal properties, with the tensile strength and tensile fracture strain of CNP being 65.3 MPa and 2.3%, respectively; the optical transmittance was close to 90% in the visible range; the highest degradation peak temperature was about 290 °C; the water contact angle at 30 s was 68.2°; A-CNP showed much higher optical properties and hydrophobicity, similar thermal ability, but slightly lower strength properties, compared with B-CNP. It can be seen that corncob residues are suitable choice of raw material for cellulose nanopaper, and is expected to find similar applications in flexible electronics and energy products as those of other raw materials used for this purpose.
在这项研究中，我们使用玉米芯残渣中的纤维素纳米纤维（CNF）制造了一种强韧且光学透明的纳米纸，玉米芯残渣是玉米芯加工过程中的一种丰富的副产物。我们应用了两种方法成功地从玉米芯残渣中生成 CNF。所得的 CNF 主要由直径（高度）约为 1.0-5.0nm 的纤维组成。结果表明，所制备的纤维素纳米纸（CNP）具有良好的强度、光学和热性能，其拉伸强度和拉伸断裂应变分别为 65.3MPa 和 2.3%；可见光范围内的透光率接近 90%；最高降解峰温度约为 290°C；30 秒时的水接触角为 68.2°；与 B-CNP 相比，A-CNP 具有更高的光学性能和疏水性、相似的热性能，但强度稍低。可以看出，玉米芯残渣是纤维素纳米纸的合适原料选择，有望在柔性电子和能源产品中找到与其他用于该目的的原料相似的应用。
