摘要
以壳聚糖、纳米氧化硅为原料,以不锈钢筛网为基体,通过浸渍涂覆的方法制备了一系列改性筛网。用扫描电子显微镜、接触角测量仪对改性筛网进行表征,研究了纳米氧化硅质量分数、壳聚糖质量分数、涂覆次数等因素对改性筛网的水下亲水/疏油的性能的影响,并测试了分离效率。结果表明:改性筛网的水下接触角和分离效率在纳米氧化硅质量分数为2%时,均达到最大,分别为142°和99.24%;壳聚糖质量分数为0.36%时,改性筛网的水下接触角和分离效率均达到最大,分别为134°和98.91%;涂覆次数为3次时,水下接触角和分离效率均达到最大,分别为143°和99.43%。结果表明:制备的改性筛网具有良好的水下亲水疏油性能,可以用于油水分离。
In this article,a series of modified mesh were prepared by dipping coated method with chitosan and nano-silica as raw material and stainless steel mesh as substrate.The influence of concentration of nano-silica,concentration of chitosan and different dipping times on hydrophilicity/oleophobicity underwater of modified mesh were studied.These modified stainless steel mesh were characterized by scanning electron microscope（SEM）and contact angle tester.And the separation efficiency was tested.The result shows that when the mass concentration of nano-silica is 2%,the underwater oil contact angle is as high as 142°,theseparation efficiency is 99.24%.When the mass concentration of chitosan is 0.36%,the underwater oil contact angle is as high as 134°,the separation efficiency is 98.91%.When the dipping time is three,the underwater oil contact angle and separation efficiency reach up to143°,99.43%,respectively.Furthermore,the modified mesh can be used more than 10 times.It is proved that the modified mesh have excellent underwater hydrophilicity/oleophobicity and can be used for oil/water separation.
出处
《青岛科技大学学报（自然科学版）》
CAS
2017年第2期48-53,共6页
Journal of Qingdao University of Science and Technology:Natural Science Edition
基金
国家自然科学基金项目(51172117
51472134)
山东省自然科学基金项目(ZR2013EMM003)
青岛市科技发展计划项目(13-1-4-148-jch)
关键词
壳聚糖
纳米氧化硅
不锈钢丝网
水下亲水/疏油
接触角
分离效率
chitosan
nano-silica
stainless steel mesh
hydrophilic and oleophobic underwater
contact angle
separation efficiency
