本文關(guān)鍵詞： 有序膜 圖案膜 聚苯乙烯 溶劑蒸發(fā)　出處：《天津工業(yè)大學(xué)》2017年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：薄膜表面的有序構(gòu)造對(duì)模板材料、超疏水介質(zhì)、細(xì)胞粘附等領(lǐng)域的應(yīng)用至關(guān)重要,如何在膜的表面形成可控的有序結(jié)構(gòu)備受關(guān)注,本論文以此為背景,設(shè)計(jì)采用溶劑蒸發(fā)誘導(dǎo)構(gòu)建具有有序構(gòu)造的膜表面,結(jié)合表面偏析、模板效應(yīng)的策略,系統(tǒng)研究了膜表面有序結(jié)構(gòu)的成形機(jī)理和關(guān)鍵因素,通過(guò)工藝條件的優(yōu)化和調(diào)節(jié),實(shí)現(xiàn)了膜表面呈現(xiàn)規(guī)則圖案或有序微孔等有序構(gòu)造的制備,相關(guān)研究對(duì)于豐富有序膜構(gòu)建方法具有重要意義。論文首先以聚苯乙烯(PS)、聚甲基丙烯酸甲酯(PMMA)為膜材料,通過(guò)共混手段和表面偏析策略在膜表面成功制備出具有三維拓?fù)浣Y(jié)構(gòu)的圖案膜,發(fā)現(xiàn)膜表面有序圖案的形成與聚合物的相容性、聚合物比例以及溶劑揮發(fā)性密切相關(guān);圍繞鑄膜液中兩種聚合物的比例、鑄膜液的濃度、刮膜厚度、溶劑揮發(fā)溫度等因素對(duì)膜表面結(jié)構(gòu)進(jìn)行了調(diào)控,借助SEM、XPS、IR等手段對(duì)膜表面的結(jié)構(gòu)及成分進(jìn)行了探究,討論了膜表面圖案的演變規(guī)律,結(jié)果表明,聚合物比例對(duì)膜表面形貌有很大的影響,當(dāng)鑄膜液為單一組分時(shí)膜表面無(wú)法形成顯著有序的圖案結(jié)構(gòu);當(dāng)PS/PMMA比例為6:1時(shí)膜表面形成的圖案結(jié)構(gòu)較為規(guī)整,有序構(gòu)造尺度為0.2-0.3μm;鑄膜液中固含量、刮膜厚度、溶劑揮發(fā)溫度等對(duì)膜表面形貌有影響,固含量為10%、刮膜厚度為0.1mm、溶劑揮發(fā)溫度為30℃時(shí)可以形成較為規(guī)整的三維有序構(gòu)造/圖案;通過(guò)紅外、XPS、EDS、接觸角分析等手段對(duì)膜正表面和底表面進(jìn)行成分分析,發(fā)現(xiàn)膜正表面聚集較多的聚苯乙烯,膜底表面聚集較多的聚甲基丙烯酸甲酯,證明了在膜制備過(guò)程中的表面偏析行為。同時(shí),論文以聚苯乙烯(PS)、聚砜(PSf)為膜材料,通過(guò)添加模板分子成功制備表面呈有序多孔的功能膜,并從鑄膜液的濃度、模板分子含量、刮膜厚度、溶劑揮發(fā)溫度等方面對(duì)膜表面孔結(jié)構(gòu)進(jìn)行調(diào)控,結(jié)果表明:模板分子和溶劑揮發(fā)是膜表面有序多孔結(jié)構(gòu)成形的關(guān)鍵因素;模板分子含量對(duì)膜表面孔結(jié)構(gòu)具有重要影響,在模板分子含量分別為2.4%和2%條件下,在聚苯乙烯和聚砜膜表面得到了較為規(guī)整有序的多孔膜;鑄膜液濃度對(duì)膜表面形貌具有一定的影響,聚苯乙烯膜在鑄膜液濃度為10%時(shí)形成的孔結(jié)構(gòu)較為規(guī)整,聚砜膜在鑄膜液濃度為7%時(shí)膜表面孔結(jié)構(gòu)較為規(guī)整;隨著溶劑揮發(fā)溫度的增加,膜表面孔結(jié)構(gòu)逐漸從無(wú)序變?yōu)橛行?當(dāng)揮發(fā)溫度為50℃時(shí)膜表面孔結(jié)構(gòu)較為規(guī)整。
[Abstract]:The ordered structure of the film surface is very important to the application of template material, superhydrophobic medium, cell adhesion and so on. How to form controllable ordered structure on the surface of the membrane has attracted much attention. The formation mechanism and key factors of the ordered structure of the membrane surface were systematically studied by the strategy of surface segregation and template effect, and the optimization and adjustment of the process conditions were carried out through the optimization and adjustment of the process conditions. The preparation of ordered structures such as regular patterns or ordered micropores on the surface of the membranes has been realized. The related studies are of great significance to enrich the methods for the construction of ordered membranes. Firstly, polystyrene (PSN), PMMA (poly (methyl methacrylate)) is used as the membrane material. The patterned films with three dimensional topological structure were successfully prepared on the surface by blending and surface segregation strategy. It was found that the formation of ordered patterns on the surface of the membranes was closely related to the compatibility of polymers, the proportion of polymers and the volatility of solvents. The structure of the membrane surface was regulated by the ratio of two kinds of polymer in the casting solution, the concentration of the casting solution, the thickness of the scraped film and the volatile temperature of the solvent. The structure and composition of the membrane surface were investigated by means of SEMX PS IR. The evolution law of the film surface pattern was discussed. The results showed that the polymer ratio had a great influence on the surface morphology of the film, and when the casting solution was a single component, the film surface could not form a significantly ordered pattern structure. When the PS/PMMA ratio is 6: 1, the pattern structure of the film surface is more regular, and the scale of the ordered structure is 0.2-0.3 渭 m. The solid content, the thickness of the film scraping and the solvent volatilization temperature in the casting solution have influence on the surface morphology of the film. Solid content is 10, film thickness is 0.1 mm, solvent volatilization temperature is 30 鈩，

本文編號(hào)：1522394