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桑枝纤维素的低共熔溶剂法提取及其结构表征

Zhang Ning,Xin Xiangdong,Zhang Yueyue, Zeng Qinglei, Zhang Ran,Gui Zhongzheng

Acta Sericologica Sinica(2021)

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Abstract
桑树是一种含有丰富纤维素的多年生经济植物,每年剪伐产生出大量桑枝副产物.为提高桑枝副产物综合利用效率,文中以氯化胆碱/草酸低共熔溶剂(deep eutectic solvent,DES)提取桑枝纤维素,通过响应面法优化提取工艺,运用傅里叶红外光谱、热重分析、X射线衍射、透射电镜和扫描电镜等方法对桑枝纤维素进行结构表征.试验结果表明:在料液比1∶20、反应温度117℃和反应时间2.9h条件下,DES法提取的桑枝纤维素纯度达90.72%,结晶度为70.61%,纤维素构型仍为I型.研究结果可为桑树资源的深加工提供技术手段.
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