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首页> 外文会议>International Conference on Eco-Dyeing, Finishing and Green Chemistry >Extraction of Bamboo Nanofibers Using Acid Hydrolysis for Functional Chemicals of Ecological Dyeing and Finishing
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Extraction of Bamboo Nanofibers Using Acid Hydrolysis for Functional Chemicals of Ecological Dyeing and Finishing

机译：用酸性水解萃取竹纳米纤维的生态染色功能化学品

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In this work a study on the feasibility of extracting cellulose nanofibers from bamboo fibers, by means of three different procedures was carried out. These processes included the using of three different types of acids (H_2SO_4, HCl, and a mixture of H_2SO_4/HCl). The raw bamboo fibers were mercerized with NaOH solutions. They were then submitted to the three different acid hydrolysis processes. The final bamboo nanofibers were morphologically characterized by transmission electron microscopy (TEM) and their surface charges in suspensions were estimated by Zeta-potential. Their degree of polymerization (DP) was characterized by viscometry and the crystallinity was tested by X-ray diffraction (XRD). All bamboo nanofibers presented a rod-like shape, an average diameter (D) of 6-10 nm and length (L) of 100-180 nm, with an aspect ratio (L/D) of around 16-18. The aggregation state increases with the amount of HCl introduced into the extraction, due to the decrease of surface charges. However, this release presented nanofibers with litter better degree of polymerization than those whose acid hydrolysis was carried out using only H_2SO_4.
机译：在这项工作中，通过三种不同程序，进行竹纤维中提取纤维素纳米纤维的可行性的研究。这些方法包括使用三种不同类型的酸（H_2SO_4，HCl和H_2SO_4 / HCl的混合物）。用NaOH溶液将生竹纤维结合。然后将它们提交至三种不同的酸水解过程。最终的竹纳米纤维是通过透射电子显微镜（TEM）的形态学表征，并且通过Zeta-潜力估计它们的表面电荷估计。它们的聚合度（DP）的特征在于粘度法，并通过X射线衍射（XRD）测试结晶度。所有竹纳米纤维呈棒状形状，平均直径（d）为6-10nm，长度（l）为100-180nm，纵横比（l / d）约为16-18。由于表面电荷的降低，聚集状态随着引入萃取的HCl量而增加。然而，该释放呈纳米纤维具有比仅使用H_2SO_4进行的酸水解的含量更好的聚合。

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