Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, PR China.
Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, PR China.
Carbohydr Polym. 2015 May 5;121:71-8. doi: 10.1016/j.carbpol.2014.11.067. Epub 2014 Dec 31.
With the serious "white pollution" resulted from the non-biodegradable plastic films, considerable attention has been directed toward the development of renewable and biodegradable cellulose-based film materials as substitutes of petroleum-derived materials. In this study, environmentally friendly cellulose films were successfully prepared using different celluloses (pine, cotton, bamboo, MCC) as raw materials and ionic liquid 1-ethyl-3-methylimidazolium acetate as a solvent. The SEM and AFM indicated that all cellulose films displayed a homogeneous and smooth surface. In addition, the FT-IR and XRD analysis showed the transition from cellulose I to II was occurred after the dissolution and regeneration process. Furthermore, the cellulose films prepared by cotton linters and pine possessed the most excellent thermal stability and mechanical properties, which were suggested by the highest onset temperature (285°C) and tensile stress (120 MPa), respectively. Their excellent properties of regenerated cellulose films are promising for applications in food packaging and medical materials.
由于不可生物降解的塑料薄膜造成的严重“白色污染”，人们相当关注可再生和可生物降解的纤维素基薄膜材料的开发，以替代石油衍生材料。在这项研究中，使用不同的纤维素（松木、棉花、竹子、MCC）作为原料和离子液体 1-乙基-3-甲基咪唑醋酸盐作为溶剂，成功制备了环保型纤维素薄膜。SEM 和 AFM 表明，所有纤维素薄膜均呈现均匀光滑的表面。此外，FT-IR 和 XRD 分析表明，在溶解和再生过程后，纤维素 I 向纤维素 II 的转变发生了。此外，棉绒和松木制备的纤维素薄膜具有最优异的热稳定性和力学性能，这分别表现为最高起始温度（285°C）和拉伸应力（120 MPa）。它们的再生纤维素薄膜的优异性能有望应用于食品包装和医疗材料。
