摘要
以荨麻为原料,经化学脱胶得到荨麻纤维,对其采用碱改性制备吸油材料。采用二次通用旋转组合对碱改性工艺进行优化设计。选择碱质量浓度、处理时间和固液比为试验因素,吸油倍率为试验指标,进行三因素三水平的二次通用旋转组合设计试验,并建立了数学模型。利用显微镜和扫描电镜对碱改性前后的荨麻纤维表面形貌进行观察对比。结果表明:最优的碱改性工艺为碱质量浓度20 g/L、处理时间6 h、固液比1∶225,经此工艺改性的荨麻纤维对柴油的吸油倍率达到13.57 g/g,约是改性前的1.5倍。碱改性后的荨麻纤维表面出现了皮层剥落和坑穴,从而提高了荨麻纤维的吸油性。
Oil-absorbing material is prepared by alkali modification of nettle fiber alter chemical degumming. The alkali modification process is optimized using the quadratic regression rotational composite design. Taking alkali dosage, treatment time and solid-liquid ratio as experimental factors, and oil absorption rate as test index, the quadratic regression rotational composite design with three factors and three levels is carried out and the regression model is established. The surface of nettle fiber before and after alkali modification is compared and characterized through microscope and scanning electron microscope. The results show that the optimum process is as follows： alkali dosage 20 g/L, treatment for 6 h with solid-liquid ratio of 1 ： 225. Under such process conditions, the diesel oil absorption ratio of nettle fibers is 13.56 g/g, which is about 1.5 times bigger than that of the untreated nettle fibers. There is exfoliation and pits appeared on the surface of the nettle fiber after alkali modification, which can increase the oil absorption of the fibers.
出处
《上海纺织科技》
北大核心
2017年第11期37-39,共3页
Shanghai Textile Science & Technology
关键词
荨麻纤维
吸油材料
碱处理
二次通用旋转组合设计
吸油倍率
改性
nettle fiber
oil-absorbing material
alkali treatment
quadratic regression rotational composite design
oil absorption ratio
modification
