细菌纤维素/涤纶非织造布自编织复合材料的制备及其性能

为探索细菌纤维素/涤纶非织造布复合材料的结构与性能，以涤纶非织造布为基材，利用生物复合的方法，自编织制得细菌纤维素/涤纶非织造布复合材料。利用扫描电子显微镜、傅里叶红外变换光谱仪、热重分析仪、表面张力仪、万能试验机对复合材料的形貌、结构、热稳定性、亲疏水性、拉伸力学性能进行表征。结果表明：涤纶非织造布中纤维被细菌纤维素黏附、缠绕、穿插，二者实现较好地复合；复合材料中出现羟基官能团，红外光谱图发生轻微地红移现象；复合后材料的热稳定性、亲水性得到改善；对比涤纶非织造布，细菌纤维素/涤纶非织造布复合材料的拉伸力学性能提高，且复合材料的断裂强度随细菌纤维素含量的增加呈现先增加后下降的趋势。

Preparation and properties of self-weaving composites of bacterial cellulose/polyester

In order to study thepreparation and properties of composites of bacterial cellulose (BC)/polyester nonwovens, BC/ polyester nonwovens composite were self-weven from polyester nonwovens as raw materialby biological combination. Scanning electron microscopy, fourier transform infrared spectroscopy, thermal gravimetric analyzer, surface tension and universal testing machines were used to characterize the morphology, structure, thermal stability, hydrophobic and hydrophilic performance and tensile mechanical property.Results show that polyester fibers innonwovensare adhered, wound and interspersed by BC, achieving good comb ination. The hydroxyl functional groups appear in the composites, and a slight red-shift occurred in the infrared spectrum. The thermal stability and hydrophilicity of the composites are improved. The tensile strength of BC/polyester nonwovens composites is improved and the fracture strength of the composites displays the trend of first increased and then decreasingwith the increase of BC content.