A new biofilm of cellulose coated with hydroxyapatite particles have been prepared using a simple, fast and low temperature process based on a microwave-assisted hydrothermal synthesis. The cellulose used as matrix of the biocomposite was extracted from banana stems residues. The hydroxyapatite coating was performed using calcium nitrate tetrahydrate, phosphoric acid, and 1,2-ethylenediamine dispersed in a cellulose/water solution, with posterior microwave-assisted hydrothermal synthesis, for 5 min at 140°C. The chemical, structural, thermal, and morphological properties of the composites were investigated by X-ray diffraction, infrared spectroscopy, thermogravimetry and field emission scanning electron microscopy. Results showed that the methodology was effective to produce high quality composites, with good thermal stability. Cell viability tests indicated that the cellulose/Hap films were not cytotoxic.

中文翻译：

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纤维素和羟基磷灰石复合材料的生物膜：替代合成工艺

使用基于微波辅助水热合成的简单、快速和低温工艺制备了一种新的涂有羟基磷灰石颗粒的纤维素生物膜。用作生物复合材料基质的纤维素是从香蕉茎残留物中提取的。羟基磷灰石涂层使用四水合硝酸钙、磷酸和 1,2-乙二胺分散在纤维素/水溶液中，通过后部微波辅助水热合成，在 140°C 下进行 5 分钟。通过X射线衍射、红外光谱、热重分析和场发射扫描电子显微镜研究了复合材料的化学、结构、热学和形态学性质。结果表明，该方法可以有效地生产具有良好热稳定性的高质量复合材料。