细菌纤维素对脆化纸张加固处理研究

Study on the Reinforcement Treatment of Fragile Paper with Bacterial Cellulose

关键词:  细菌纤维素  脆化纸张  加固  有机体系

Key Words:bacterial cellulose  fragile paper  reinforcement  organic system

摘要:本研究探讨了细菌纤维素对脆化纸张的加固效果。以细菌纤维素为加固材料、二甲基亚砜（DMSO）为溶剂的有机体系作为加固溶液，能够有效提高纸张的机械性能，当细菌纤维素用量为10%（相对于纸张绝干质量）时，与空白宣纸相比，纸张抗张指数为54.7 N·m/g，提高了50%；耐折度为1.57，提高了76%，且对厚度、紧度、白度和色差值等性能影响小，不透明度提高到95%，毛细吸液高度下降到2 mm。经过干热老化7天后，加固处理的纸张抗张指数为46.0 N·m/g、耐折度为1.38，其机械性能始终高于空白宣纸。加固处理纸张具有较好的耐久性，不发生褶皱变形，干燥过程简单。

Abstract:This study explored the reinforcement effects of bacterial cellulose on fragile paper. The organic system reinforcement solution using bacterial cellulose as reinforcement material and DMSO as solvent， which could effectively improve the mechanical properties of paper samples. When the bacterial cellulose dosage was 10%（relative to paper dry mass）， the tensile index was 54.7 N·m/g， increased by 50%， and the folding endurance was 1.57， increased by 76%， with little impact on properties such as thickness， density， color difference value， and whiteness. Paper opacity was 95%， and capillary rise was 2 mm. After 7 days of dry heat aging， the tensile index was 46.0 N·m/g， the folding endurance was 1.38， and its mechanical properties were higher than blank paper. The reinforced paper exhibited good durability， did not experience wrinkles or deformation， and the drying process was simple.