Extraction and Characterization of Bamboo Shoot Shell Fibers by Sodium Percarbonate Assisted Degumming

ABSTRACT

The bamboo shoot shell fibers were extracted by using environmental protection oxidant sodium percarbonate combined with alkali oxygen bath method. To explore the influence of various factors on its degumming, the efficiency of degumming through single-factor and orthogonal experiments was assessed. The results showed that the used method had a good effect on the degumming of bamboo shoot shell fiber, and most of the non-cellulose components such as hemicellulose, lignin, and pectin had been removed. After the treatment, the cellulose content and crystallinity were 73.19% and 61.40%, respectively. Taking the degumming rate as the index, the factors such as dosage of sodium percarbonate and hydrogen peroxide, soaking temperature, and time in alkali boiling treatment were optimized. The results showed that the degumming rate was 69.17% when the scouring temperature was 90°C, the alkali boiling time was 120 min, the dosage of sodium percarbonate was 24 g/L, and the dosage of hydrogen peroxide was 40 mL/L. The structure and properties of bamboo shoot shell fiber were analyzed by scanning electron microscope (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and thermogravimetric analyzer (TGA). The prepared bamboo shoot shell fibers would be considered as a promising and sustainable raw material for the textile industry and other prospects in the future.

采用环保型氧化剂过碳酸钠结合碱氧浴法提取了竹笋壳纤维。通过单因素和正交试验, 探讨各种因素对其脱胶效果的影响, 并对脱胶效果进行了评价。结果表明, 该方法对竹笋壳纤维脱胶效果良好, 大部分非纤维素成分, 如半纤维素, 木质素和果胶已被去除。经过处理后, 纤维素含量和结晶度分别为73.19%和61.40%。以脱胶率为指标指数, 过碳酸钠和过氧化氢的用量, 碱煮处理的浸泡温度和时间等因素进行了优化。结果表明, 当煮练温度为90°C, 碱煮时间为120 min, 双氧水用量为40mL/L, 过碳酸钠用量为24%时, 脱胶率为69.17%。用扫描电子显微镜 (SEM), X射线衍射 (XRD), 傅里叶变换红外光谱 (FTIR) 和热重分析仪 (TGA) 等对竹笋壳纤维的结构和性能进行了分析。制备的竹笋壳纤维作为一种可持续发展的原材料, 被认为在纺织业和其他行业均有很好的应用前景。

KEYWORDS:

• Bamboo shoot shell fiber
• degumming rate
• sodium percarbonate
• alkali oxygen bath
• chemical composition

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by the National Innovation Training Program for College Students [201910495014]; General Project of Hubei Provincial Natural Science Foundation [2016cfb459]; Technical Innovation Program of Hubei Province [2019aaa005]; National Natural Science Foundation of China Youth Fund [51503162]; Innovation Training Program for University Students of Hubei Province [s201910495063].