本文選題：PAN/Si + O_2聚合物��； 參考：《哈爾濱工業(yè)大學》2015年碩士論文

【摘要】：PES膜由于其材料由穩(wěn)定的剛性苯環(huán)結構組成,具有良好的化學穩(wěn)定性和耐壓性等優(yōu)點,能夠應用于多種條件下的污水處理。但在使用的過程中發(fā)現(xiàn),由于PES膜材料為疏水性材料,其在處理污水時水通量較低且容易污染,故本文從納微結構表面能夠有效的抗污染原理出發(fā),調(diào)節(jié)制備工藝參數(shù)制備出兩親性的PAN/Si O2聚合物,用其作為改性劑改性PES膜,進一步調(diào)整膜成型工藝,制備出改性PES膜,使其具有規(guī)整的納微結構表面,從而增加水通量和抗污染性。采用添加反應和原位同步水解兩種不同的方法均能夠制備兩親性PAN/Si O2聚合物,采用添加反應制備的聚合物粒徑分布較窄,但存在一定的團聚現(xiàn)象,而同步水解法制備的聚合物粒徑分布較寬,但分散相對均勻。研究結果表明,添加法和同步水解法兩種方法制備出的兩親性聚合物對PES膜進行改性后,均能夠在PES膜表面形成納微結構,同時改性膜表面具有良好的親水性和抗污染性能。其中,聚合物添加量,聚合物粒徑和聚合物的親水性對于改性PES膜的表面結構和抗污染性能均有一定的影響。與未改性的PES膜相比,添加反應制備聚合物改性制備的PES膜親水角為43.31°,降低了28.73%,水通量為547.51L/m2·h,提高了50.43%,水通量恢復率為76.07%,提高了265.19%。原位同步水解的方法制備出的聚合物改性的PES膜,親水角為42.03°,降低了30.84%,水通量為605.62 L/m2·h,提高了66.39%,水通量恢復率為78.69%,提高了277.72%。綜合比較,原位同步水解的方法制備出的兩親性聚合物可以更好的在PES膜表面構筑均勻分布的親水性納微結構,其抗污染性更好,具有更優(yōu)異的綜合性能。
[Abstract]:Because PES membrane is composed of stable rigid benzene ring structure, it has good chemical stability and pressure resistance, so it can be used in sewage treatment under various conditions. However, it is found that PES membrane material is hydrophobic, and its water flux is low and easy to pollute in the treatment of sewage. Therefore, the anti-pollution principle of nanostructure surface is considered in this paper. The amphiphilic PAN / Sio _ 2 polymer was prepared by adjusting the preparation process parameters. PES film was modified with PAN / Sio _ 2 as modifier. The modified PES film was prepared by further adjusting the forming process to make the modified PES film have regular nano-structure surface. Thus increasing water flux and pollution resistance. The amphiphilic PAN / Sio _ 2 polymer can be prepared by two different methods of addition reaction and in-situ simultaneous hydrolysis. The particle size distribution of the polymer prepared by adding reaction is narrow, but there exists a certain agglomeration phenomenon. The particle size distribution of the polymer prepared by simultaneous hydrolysis method is wider, but the dispersion is relatively uniform. The results show that the modified PES membrane can form nanostructure on the surface of PES membrane, and the surface of PES membrane has good hydrophilicity and antifouling property after modification of PES membrane by two kinds of amphiphilic polymers prepared by addition method and simultaneous hydrolysis method. The amount of polymer, the diameter of polymer and the hydrophilicity of polymer have some effects on the surface structure and antifouling performance of PES film. Compared with the unmodified PES membrane, the hydrophilic angle of the PES membrane was 43.31 擄, the water flux was 547.51 L / m ~ 2 路h ~ (2), the water flux was 547.51 L / m ~ (2) ~ 2, the water flux recovery rate was 76.07 and 265.19% higher than that of the unmodified PES membrane. The polymer modified PES membrane prepared by in-situ simultaneous hydrolysis has a hydrophilic angle of 42.03 擄, a decrease of 30.844 擄, a water flux of 605.62 L / m ~ 2 路h, an increase of 66.39 and a water flux recovery rate of 78.69 and a 277.72% increase. Compared with the in-situ simultaneous hydrolysis, the amphiphilic polymers prepared by in-situ hydrolysis method can better construct homogeneously distributed hydrophilic nanostructures on the surface of PES membranes, and have better antifouling properties and better comprehensive properties.
【學位授予單位】：哈爾濱工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TQ028.8;X703

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本文編號：2008612