This study aims to develop bacterial cellulose with enhanced flame retardancy and flexibility. The bacterial cellulose was phosphorylated with phytic acid to improve its flame retardancy. Urea and xylitol were used as plasticizers, and their effects in improving the flexibility of bacterial cellulose were compared and evaluated. The optimal conditions for producing phosphorylated bacterial cellulose were found to be as follows: phytic acid:xylitol molar ratio of 1:10, phytic acid concentration of 10% (o.w.f.), and shaking at 30°C for 30 min at 90 rpm in a shaking water bath. A thermogravimetric analysis revealed that phosphorylated bacterial cellulose exhibited enhanced thermal properties compared with the original bacterial cellulose. Fourier transform infrared spectroscopy and X-ray diffraction confirmed that the chemical and crystalline structures of bacterial cellulose remained unchanged after phosphorylation. Mechanical properties such as the tensile strength, flexibility, and dimensional stability of the as-produced phosphorylated bacterial cellulose improved by using xylitol. In particular, the tensile strength and flexibility of the phosphorylated bacterial cellulose increased 5.7 and 2-fold, respectively, compared with those of the original bacterial cellulose. Therefore, this study demonstrated that the flame retardancy and flexibility of bacterial cellulose can be improved by using eco-friendly materials such as phytic acid and xylitol. The as-produced phosphorylated bacterial cellulose can be proposed as a fabric material with sufficient mechanical properties.

中文翻译：

---

通过植酸和木糖醇磷酸化开发具有增强阻燃性和柔韧性的细菌纤维素

本研究旨在开发具有增强阻燃性和柔韧性的细菌纤维素。用植酸对细菌纤维素进行磷酸化以提高其阻燃性。以尿素和木糖醇作为增塑剂，比较评价它们在提高细菌纤维素柔韧性方面的效果。结果发现，生产磷酸化细菌纤维素的最佳条件为：植酸：木糖醇摩尔比为1：10，植酸浓度为10%（owf），在30℃、90rpm的条件下振荡30min。摇动水浴。热重分析表明，与原始细菌纤维素相比，磷酸化细菌纤维素表现出增强的热性能。傅里叶变换红外光谱和X射线衍射证实磷酸化后细菌纤维素的化学和晶体结构保持不变。使用木糖醇改善了所生产的磷酸化细菌纤维素的机械性能，例如拉伸强度、柔韧性和尺寸稳定性。特别是，与原始细菌纤维素相比，磷酸化细菌纤维素的拉伸强度和柔韧性分别增加了5.7倍和2倍。因此，本研究表明，通过使用植酸和木糖醇等环保材料可以提高细菌纤维素的阻燃性和柔韧性。所生产的磷酸化细菌纤维素可被建议作为具有足够机械性能的织物材料。