Rahmadiawan Dieter, Abral Hairul, Azka Muhammad Adlan, Sapuan S M, Admi Ratna Isnanita, Shi Shih-Chen, Zainul Rahadian, Zikri Ahmad, Mahardika Melbi
Department of Mechanical Engineering, National Cheng Kung University (NCKU) Tainan Taiwan.
Department of Mechanical Engineering, Universitas Negeri Padang 25173 Padang Sumatera Barat Indonesia.
RSC Adv. 2024 Sep 18;14(40):29624-29635. doi: 10.1039/d4ra06099g. eCollection 2024 Sep 12.
Developing a simple and environmentally friendly method to vary the physical, mechanical, and thermal properties of cellulose films is of great importance. This study aimed to characterize 2,2,6,6-tetramethylpiperidinyl-1-oxyl (TEMPO)-oxidized bacterial cellulose (BC) films prepared using non-pressurized hot water vapor (NPHWV) method. A wet BC-pellicle that had been oxidized with TEMPO was treated with NPHWV for 60, 120, and 240 minutes, respectively. As a control, a TEMPO-oxidized BC (TOBC) film without NPHWV was prepared. The results show that the longer NPHWV duration of the TOBC film increased the tensile and thermal properties. This film became more hydrophobic and showed lower moisture absorption, thermal conductivity and organic solvent uptake, more crystalline structure, and higher fiber density after NPHWV treatment. The acquired results provide a simple, inexpensive, and ecologically friendly method for varying TOBC film properties.
开发一种简单且环保的方法来改变纤维素薄膜的物理、机械和热性能具有重要意义。本研究旨在表征使用非加压热水蒸汽（NPHWV）法制备的2,2,6,6-四甲基哌啶-1-氧基（TEMPO）氧化细菌纤维素（BC）薄膜。将已用TEMPO氧化的湿BC薄膜分别用NPHWV处理60、120和240分钟。作为对照，制备了未经过NPHWV处理的TEMPO氧化BC（TOBC）薄膜。结果表明，TOBC薄膜的NPHWV处理时间越长，其拉伸性能和热性能越高。经过NPHWV处理后，该薄膜变得更疏水，吸湿率、热导率和有机溶剂吸收率更低，具有更多的晶体结构和更高的纤维密度。所获得的结果为改变TOBC薄膜性能提供了一种简单、廉价且生态友好的方法。
