聚合物Janus短纤维稳定Pickering乳液及在油水分离中的应用

发布时间：2018-04-01 20:02

本文选题：静电纺丝技术　切入点：Janus短纤维　出处：《西南交通大学》2017年硕士论文

【摘要】：伴随国家与国家之间的利益越来越紧密、交通运输业的蓬勃发展,工业和生活产生的含油污水混合物造成的污染越来越严重,不仅对野生动植物生存和人类健康造成威胁,而且对水体、大气、农作物生长和自然景观造成了影响。目前主要物理、化学、物理化学方法等将含油污水混合物进行回收、分离和循环使用,但存在分离效果欠佳和二次污染等问题,且无法很好地分离少量悬浮油。随着科学研究的深入,固体颗粒替代表面活性剂在油水表面不仅能够形成尺寸均一的Pickering乳液,而且Pickering乳液具有较好的稳定性。本文通过静电纺丝技术制备一侧是香豆素-6标记的聚(苯乙烯-马来酸酐)-g-(对苄基氨基)-1,2,4,5-四嗪-6-(2-氰基嘧啶)共聚物、另一侧是罗丹名B标记的聚(苯乙烯-马来酸酐)共聚物的Janus纤维,再通过冰冻切割技术获得长径比不同的Janus短纤维。通过Diels-Alder点击化学将疏水性链降冰片烯-(双环[2.2.1]庚-5-烯-2-棕榈酰胺)接枝到聚(苯乙烯-马来酸酐)-g-(对苄基氨基)-1,2,4,5-四嗪-6-(2-氰基嘧啶)共聚物侧,通过酰胺反应将温度响应性亲水性链聚(N-异丙基丙烯酰胺)接枝到聚(苯乙烯-马来酸酐)共聚物侧,获得了长径比不同、接枝率不同的Janus短纤维。通过正交实验,对极差和变差平方和分析、方差分析、交互作用分析和线性回归分析等,获得了 Pickering乳液稳定性最好的Janus短纤维参数。通过Janus短纤维和Janus微球稳定性实验,Janus短纤维的不同温度响应性实验,验证接枝聚(N-异丙基丙烯酰胺)分子量为2200 kDa的Janus短纤维具有较好的稳定性,并且随着外界温度逐渐升高至其最低临界溶解温度时Pickering乳液发生破乳。紫外-可见分光光度计检测结果显示,Janus短纤维油水分离次数可达到20次以上,且分离效果达到95%。
[Abstract]:With between the state and national interests more closely, the vigorous development of the transportation industry, the pollution caused by sewage and industrial and mixture of life produces more serious, not only for the survival of wildlife and human health threats, but also to water, atmosphere, crop growth and natural landscape impact. At present the main physical the chemical, physical and chemical methods such as oily wastewater mixture for recycling, separation and recycling, but there is poor separation effect and two pollution problems, and cannot be well separated a small amount of suspended oil. With the in-depth scientific research, solid particles instead of surfactants in oil surface can form a uniform size of Pickering emulsion moreover, the Pickering emulsion has good stability. The paper prepared by electrospinning technique at the side of coumarin -6 labeled poly (styrene maleic anhydride) -g - (benzylamino of -1,2,4,5- -6- (2-) four triazine cyanopyrimidine) copolymer, the other side is Luo Dan B labeled poly (styrene maleic anhydride) copolymer of Janus fiber, and then through the frozen cutting technology to obtain the length diameter ratio of Janus short fiber different by Diels-Alder. Click chemistry hydrophobic norbornene - chain (double loop [2.2.1] g -5- ene -2- palmitic amide) grafted onto poly (styrene - maleic anhydride (-g-) of benzylamino) -1,2,4,5- four in -6- (2- cyanopyrimidine) copolymer side by amidation reaction will be the temperature responsive hydrophilic chain poly (N- isopropylacrylamide) grafted onto poly (styrene maleic anhydride) copolymer the side length diameter ratio, grafting ratio of Janus short fiber different. Through orthogonal experiment, the range and variation of square and analysis, variance analysis, interaction analysis and linear regression analysis, obtained the Janus Pickering emulsion stability is the best. Short fiber parameters. Through the Janus short fiber and Janus microspheres stability experiment, different temperature response experiment of Janus short fiber, verification of grafted poly (N- isopropylacrylamide) with molecular weight of Janus short fiber 2200 kDa has good stability, and with the outside temperature gradually increased to the lower critical solution temperature of Pickering emulsion demulsification occurred. The UV VIS spectrophotometer test results showed that the Janus fiber oil-water separation frequency can reach more than 20 times, and the separation effect can reach 95%.

【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TQ340.1

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