双相水溶液法制备乌拉草纤维
发布时间：2019-04-04 14:36
【摘要】：采用双相水(聚乙二醇(PEG)-2 000/无机盐)溶液法制备乌拉草纤维.首先对原料进行预氧处理,然后进行双相水溶液处理以脱除余下的非纤维素物质,并用单因子控制变量法对该工艺进行优化,最后对采用最佳处理工艺得到的纤维进行测试与表征.结果表明:双相水溶液处理的最佳工艺条件,即为10%PEG-2 000,2.5%NaOH,1.5%Na2SO3,1.5%Na2CO3,浴比1∶20,处理温度为90℃,处理时间为2h;测试得到纤维的平均长度、线密度、回潮率、结晶度、拉伸断裂强度分别为30mm、2.72tex、10.66%、42%、1.84cN/dtex;乌拉草及其纤维均主要含有纤维素、木质素和半纤维素,处理后纤维素含量显著提高,而木质素和半纤维素含量降低;乌拉草纵向凹凸不平,横向呈波浪状,且波峰部分由孔洞结构组成,波谷部分由实心物质组成;纤维纵向基本平直,单根纤维表面有少量杂质.
[Abstract]:The ulla grass fiber was prepared by using a solution of two-phase water (PEG)-2,000/ inorganic salt). The raw materials are subjected to pre-oxygen treatment, then a two-phase aqueous solution treatment is carried out to remove the remaining non-cellulosic materials, and the process is optimized by using a single-factor control variable method, and finally, the fibers obtained by the optimal treatment process are tested and characterized. The results show that the optimum process conditions of the two-phase aqueous solution are 10% PEG-2,000, 2.5% NaOH, 1.5% Na2SO3, 1.5% Na2CO3, the bath ratio is 1:20, the treatment temperature is 90 鈩，
本文编号：2453910
[Abstract]:The ulla grass fiber was prepared by using a solution of two-phase water (PEG)-2,000/ inorganic salt). The raw materials are subjected to pre-oxygen treatment, then a two-phase aqueous solution treatment is carried out to remove the remaining non-cellulosic materials, and the process is optimized by using a single-factor control variable method, and finally, the fibers obtained by the optimal treatment process are tested and characterized. The results show that the optimum process conditions of the two-phase aqueous solution are 10% PEG-2,000, 2.5% NaOH, 1.5% Na2SO3, 1.5% Na2CO3, the bath ratio is 1:20, the treatment temperature is 90 鈩，
本文编号：2453910
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