Abstract Flax fiber is an important textile material with excellent antibacterial activity and moisture wicking. Degumming of flax roving is essential in determining flax-fiber quality. Traditional degumming requires a large amount of chemicals to process flax roving. This study aimed to reduce the chemical usage and achieve cleaner production during this process by applying microbial treatment to degum flax roving. Microbial degumming instead of acid pickling and NaClO2-bleaching steps can no longer use H2SO4 and NaClO2, and the amount of alkali can be reduced by 50%. By analyzing the compositional changes of the main steps in traditional degumming processes and microbial-treatment sample, the application of Bacillus subtilis HR5 can achieve a good degumming effect. Results of environmental scanning electron microscopy, Fourier-transform infrared spectroscopy, thermogravimetric analysis, and X-ray diffractometry analyses showed that the gum was remarkably reduced, which can be confirmed by the gum components. Overall, the breaking tenacity and antibacterial activity of fibers degummed by microbial treatment were better than those treated by traditional degumming. These findings demonstrated the feasibility of microbial treatment as a solution for flax roving degumming.

中文翻译：

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一种无酸洗和NaClO2漂白的环保型亚麻粗纱脱胶工艺

摘要 亚麻纤维是一种重要的纺织材料，具有优良的抗菌活性和吸湿排汗能力。亚麻粗纱的脱胶对于确定亚麻纤维质量至关重要。传统的脱胶需要大量的化学品来加工亚麻粗纱。本研究旨在通过对脱胶亚麻粗纱进行微生物处理，在此过程中减少化学品的使用并实现清洁生产。微生物脱胶代替酸洗和NaClO2-漂白步骤不再使用H2SO4和NaClO2，碱用量可减少50%。通过分析传统脱胶工艺主要步骤和微生物处理样品的组成变化，枯草芽孢杆菌HR5的应用可以达到良好的脱胶效果。环境扫描电镜结果，傅里叶变换红外光谱、热重分析和X射线衍射分析表明胶显着减少，这可以通过胶组分来证实。总体而言，微生物脱胶纤维的断裂韧度和抗菌活性优于传统脱胶纤维。这些发现证明了微生物处理作为亚麻粗纱脱胶解决方案的可行性。