本文選題：油膜污染物 + 磁性高分子微球��； 參考：《南京理工大學(xué)》2015年碩士論文

【摘要】：世界上日益頻繁發(fā)生的石油泄漏事故嚴(yán)重威脅著全球的海洋生態(tài)平衡,其中石油泄漏后形成的大面積薄層的油膜則是造成海洋生態(tài)失衡的元兇之一。遺憾的是,目前仍然沒有專門的手段可以高效地清除此類油膜污染物。針對(duì)這一情況,本文分別制備了PS/Fe3O4(聚苯乙烯/四氧化三鐵)和PU/Fe3O4(聚氨酯/四氧化三鐵)兩種磁性高分子微球材料,兩種材料均具有超疏水,超親油,高吸附能力,強(qiáng)的磁響應(yīng)性和熱穩(wěn)定性等多種性質(zhì),為大面積的油膜污染處理提供了一個(gè)環(huán)境友好、快速高效、低成本的解決方案,對(duì)維護(hù)良好的生態(tài)環(huán)境有著巨大的意義。本文研究內(nèi)容主要包括如下幾個(gè)方面：(1)通過種子微球溶脹聚合法合成了磁性PS/Fe3O4復(fù)合微球,使用XRD, TEM, FESEM, FT-IR, TGA, VSM, CAs等方法對(duì)微球進(jìn)行一系列表征,研究了微球合成過程中種子微球種類和溶脹時(shí)間對(duì)微球的大小和形貌的影響,討論了磁性PS/Fe3O4復(fù)合微球的制備機(jī)理。(2)首先使用硅烷在Fe304表面接枝氨基,接著硅烷改性的Fe304經(jīng)過乳液聚合,制備PU/Fe3O4磁性復(fù)合微球材料。并通過XRD, SEM, TGA, VSM, CAs等方法對(duì)復(fù)合材料進(jìn)行表征,研究了PU/Fe3O4磁性復(fù)合微球材料的合成機(jī)理。最后分別討論了疏水封端劑,不同聚合時(shí)間對(duì)PU/Fe3O4磁性復(fù)合微球材料的影響。(3)為了評(píng)估制備的兩種高分子基磁性復(fù)合微球材料對(duì)樣品的吸油量和吸附效率,我們采用重量法對(duì)原油、N100潤滑油和03柴油這3種常見的油類污染物的吸附量(g/)進(jìn)行測定。此外,我們還探究了吸附時(shí)間和pH值等對(duì)吸附量(g/g)的影響,并模擬吸附材料的再生過程,對(duì)其再生性能進(jìn)行了研究。結(jié)果表明：兩種材料不僅可以快速、高效地清除水面的油膜污染物,而且在惡劣的環(huán)境下也能保持較好的穩(wěn)定性。更重要的是,在經(jīng)過10次的模擬循環(huán)試驗(yàn)后,兩種材料均依舊能夠保持較高的吸附能力,說明這兩種材料具備良好的回收再生能力。
[Abstract]:The increasingly frequent oil spill accidents in the world have seriously threatened the global marine ecological balance, in which a large area of thin-layer oil film formed after the oil spill is one of the main culprits causing the marine ecological imbalance. Unfortunately, there is still no specific means to efficiently remove such oil-film pollutants. In this paper, two kinds of magnetic polymer microspheres, PS / Fe _ 3O _ 4 (polystyrene / iron trioxide) and PU/ Fe _ 3O _ 4 (polyurethane / Fe _ 2O _ 3), were prepared respectively. The strong magnetic response and thermal stability provide an environmentally friendly, fast, efficient and low-cost solution for the treatment of large areas of oil film pollution, which is of great significance for the maintenance of good ecological environment. The main contents of this paper are as follows: (1) Magnetic PS/Fe3O4 composite microspheres were synthesized by swelling polymerization of seed microspheres. The microspheres were characterized by XRD, TEM, FESEM, FT-IR, TGA, VSM, CAs and so on. The effects of seed microspheres and swelling time on the size and morphology of microspheres were studied. The preparation mechanism of magnetic PS/Fe3O4 composite microspheres was discussed. Firstly, silane was used to graft amino on the surface of Fe304. Then Fe304 modified by silane was prepared by emulsion polymerization to prepare PU/Fe3O4 magnetic composite microspheres. The synthesis mechanism of PU/Fe3O4 magnetic composite microspheres was studied by means of XRD, SEM, TGA, VSM, CAs and other methods. Finally, the effects of hydrophobic capping agent and polymerization time on PU/Fe3O4 magnetic composite microspheres were discussed in order to evaluate the oil absorption and adsorption efficiency of two kinds of polymer based magnetic composite microspheres. The adsorption capacity of three common oil pollutants, oil N 100 and diesel 03, was determined by gravimetric method. In addition, the effects of adsorption time and pH value on the adsorption capacity (g / g) were investigated, and the regeneration process of the adsorbed materials was simulated, and the regeneration performance was studied. The results show that the two materials can not only rapidly and efficiently remove oil film pollutants from water surface, but also maintain good stability in harsh environment. More importantly, after 10 times of simulated cycle tests, the two materials can still maintain high adsorption capacity, which shows that the two materials have good recovery and regeneration ability.
【學(xué)位授予單位】：南京理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：X55;TQ317

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 王文華;王靜;寇希元;邱金泉;苗英霞;;納米聚丙烯纖維吸油特性及對(duì)水面浮油的吸附研究[J];海洋技術(shù);2013年02期

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本文編號(hào)：1968937