西瓜纤维素的提取及其吸液性能  

Extraction of Citrullus lanatus cellulose and its water absorbent property

作　　者：张袁松[1] 蒋瑜春[1] 陈丽嫚[1] 黄迅[1] 王蜀[1] 刘祖兰[1] 

机构地区：[1]西南大学纺织服装学院,重庆400715

出　　处：《纺织学报》2014年第1期13-19,共7页Journal of Textile Research

基　　金：中央高校基本科研业务费专项资金项目(XDJK2013A021;XDJK2013D014;XDJK2009B007);教育部第39批留学基金项目(教外司留【2010】1174号);教育部春晖计划(Z2011151);国家级大学生创新创业训练计划(201310635047)

摘　　要：为得到具有较高吸液性能的天然纤维素,以西瓜为原料,采用化学分离方法对其中纤维素的提取工艺进行研究。通过单因素试验,研究了提取过程中NaOH质量分数、H2O2质量分数、反应温度、反应时间对西瓜纤维素质量分数的影响,在此基础上进行正交试验,确定了提取西瓜纤维素最佳工艺条件,即NaOH质量分数为4%、H2O2质量分数为10%、反应温度为60℃、反应时间为30 min时,西瓜纤维素质量分数最佳,为86.52%。SEM观察表明,西瓜纤维素具有特殊的中空结构。红外光谱分析表明提取样品成分中主要含有纤维素。吸液倍率测试表明,当水温在40℃、Na+浓度为0.1 mol/L时,西瓜纤维素的吸液倍率可以达到85 g/g,显著高于天然棉纤维素的吸液倍率(40 g/g)。In order to get a natural cellulose of high water absorbent ability, cellulose from Citrullus lanatus by chemical separation technique were studied the extraction conditions of The effects of NaOH mass fraction, H2O2mass fraction, reaction temperature and time on the extraction of Citrullus lanatus cellulose were investigated using single factor experiment. The optimum process conditions were determined by orthogonal test as follows： NaOH mass fraction 4% , HEO2mass fraction 10% , and reacting at 60℃ for 30 min. The optimal mass fraction （86.52%） of the Citrullus lanatus cellulose was obtained under these conditions. The SEM image showed that Citrullus lanatus cellulose had special hollow structure; and infrared spectrum analysis confirmed that Citrullus lanatus extract was cellulose. Absorption liquid rate test showed that, when water temperature was 40 ℃ and Na ＋ concentration was 0.1 mol/L, the water absorption rate of Citrullus lanatus cellulose could reach 85 g/g, obviously higher than natural cotton cellulose （40 g/g）.

关 键 词：西瓜纤维素 化学分离法 结构 吸液性能 

分 类 号：TS102.2[轻工技术与工程—纺织工程]