OP-10反相微乳體系的相行為研究及納米復(fù)合碳酸鹽的制備
發(fā)布時間：2019-04-04 20:27
【摘要】：辛烷基酚聚氧乙烯醚(OP-10)作為非離子表面活性劑,具有優(yōu)良的勻染、乳化、潤濕、擴散,抗靜電性能。使用OP-10配制微乳液時需要研究形成的穩(wěn)定微乳區(qū)域范圍,以便于為微乳法制備納米材料提供參考。實驗繪制了一系列辛烷基酚聚氧乙烯醚(OP-10)+醇(正丁醇、異戊醇或正辛醇)+環(huán)己烷+水(或Ca Cl2水溶液)擬三元微乳體系相圖,分別研究了正丁醇,異戊醇,正辛醇的添加比例和氯化鈣水溶液濃度對微乳區(qū)域的影響,發(fā)現(xiàn)在純水的相圖中,隨著OP-10和正丁醇,異戊醇或正辛醇的質(zhì)量比逐漸增大,微乳區(qū)域所呈現(xiàn)出的擬三元體系的相對面積先增大,后減小;當(dāng)OP-10:正丁醇=1.5:1,OP-10:異戊醇=2:1,OP-10:正辛醇=2.5:1時,微乳區(qū)相對面積最大。在Ca Cl2水溶液相圖中,三種醇微乳區(qū)相對面積總體上呈現(xiàn)先增大后減小的變化趨勢,且添加不同醇對微乳區(qū)相對面積的影響也不同,其中微乳區(qū)面積最大時的正丁醇、異戊醇和正辛醇體系所對應(yīng)的Ca Cl2濃度分別為0.1mol/L、0.5mol/L和0.1mol/L。沉積有金屬離子的結(jié)晶現(xiàn)象在自然界中隨處可見,金屬離子能夠促使碳酸鈣晶體形貌或多或少的發(fā)生質(zhì)變,最具代表性的是金屬二價離子,通過實驗研究能夠在機理上深入發(fā)掘其對碳酸鈣結(jié)晶的影響。在碳酸鈣晶體結(jié)構(gòu)中插入鋇離子會影響其熱穩(wěn)定性,結(jié)晶化過程,進而促使生物和非生物之間的形態(tài)發(fā)生改變。微乳法通過反應(yīng)物在微乳液所形成的微型反應(yīng)器中反應(yīng),為制備納米粒子提供了便利。我們采用相變點觀察法研究辛烷基酚聚氧乙烯醚(OP-10)+正辛醇+環(huán)己烷+(Ca Cl2/Ba Cl2)的擬三元微乳體系相圖,分別配制總濃度為1mol/L的七種不同摩爾比的Ca2+/Ba2+微乳液,并與等摩爾的碳酸鈉水溶液反應(yīng)制備共沉淀碳酸鹽,通過使用掃描電鏡(SEM)對所制備的七組樣品進行表征分析,當(dāng)為純鈣離子鹽時,主要形成大的不完整地立方體顆粒;加入鋇離子后,當(dāng)Ca2+/Ba2+=3:1時,沉淀為立方形、球形聚集體的混合;隨著鋇離子濃度增加,當(dāng)Ca2+/Ba2+=2:1時,形成團聚體更多、更大;當(dāng)Ca2+/Ba2+=1:1和1:2時,部分形成團聚體的同時,伴隨有大量的球形小顆粒形成,且Ca2+/Ba2+=1:2時形成聚集體更大;當(dāng)Ca2+/Ba2+=1:3及純鋇離子鹽時,沉淀主要為棒狀、不規(guī)則多面體。從XRD和FTIR分析來看,隨著Ba2+濃度的增加,共沉淀產(chǎn)物Ca CO3逐漸從方解石轉(zhuǎn)變?yōu)榍蝣笔?最終形成較為穩(wěn)定的文石結(jié)構(gòu)。
[Abstract]:Octane phenol polyoxyethylene ether (OP-10), as a non-ionic surfactant, has excellent levelling, emulsifying, wetting, diffusion and antistatic properties. In order to provide a reference for the preparation of nanomaterials by microemulsion method, the stable microemulsion region should be studied when OP-10 is used to prepare microemulsion. A series of pseudo-ternary microemulsion phase diagrams of octane phenol polyoxyethylene ether (OP-10) alcohol (n-butanol, isoamyl alcohol or n-octanol) cyclohexane water (or Ca Cl2 aqueous solution) were drawn. The effects of the addition ratio of n-octanol and the concentration of calcium chloride solution on the microemulsion region were studied. It was found that the mass ratio of n-octanol to n-butanol, isoamyl alcohol or n-octanol gradually increased in the phase diagram of pure water. The relative area of the quasi-ternary system presented by the microemulsion region first increased and then decreased. When OP-10: n-butanol = 1.5 渭 1, op _ (10): isoamyl alcohol = 2: 1, op ~ (10): n-octanol = 2.5: 1, the relative area of microemulsion region is the largest. In the phase diagram of Ca Cl2 aqueous solution, the relative area of the microemulsion region of three kinds of alcohols first increased and then decreased, and the effects of different alcohols on the relative area of the microemulsion region were also different, in which the n-butanol with the largest microemulsion area had different effects on the relative area of the microemulsion region. The corresponding Ca Cl2 concentrations of isoamyl alcohol and n-octanol were 0.1 mol / L, 0.5 mol / L and 0.1 mol / L, respectively. Crystallization of deposited metal ions can be seen everywhere in nature, metal ions can make calcium carbonate crystal morphology more or less qualitative change, the most representative is the metal divalent ion, The effect of calcium carbonate on the crystallization of calcium carbonate can be deeply explored through the experimental study. The addition of barium ions into the crystal structure of calcium carbonate will affect the thermal stability and crystallization process of calcium carbonate, and then promote the morphological change between biological and abiotic species. Through the reaction of reactants in the micro-reactor formed by microemulsion, the microemulsion method provides convenience for the preparation of nano-particles. The phase diagram of octane phenol polyoxyethylene ether (OP-10) octanol cyclohexane (Ca Cl2/Ba Cl2) in pseudo-ternary microemulsion system was studied by phase transition point observation. Seven kinds of Ca2 / Ba2 microemulsions with total concentration of 1mol/L were prepared and co-precipitated carbonate was prepared by reacting with the aqueous solution of sodium carbonate of equal molar ratio. The seven groups of samples were characterized by scanning electron microscopy (SEM) (SEM). When it is pure calcium ion salt, it mainly forms large incomplete cubic particles. With the addition of barium ions, when Ca2 / Ba2 = 3: 1, the precipitates are cubic and spherical aggregates are mixed, and when the concentration of barium ions increases, when Ca2 / Ba2 = 2: 1, more aggregates are formed. When Ca2 / Ba2 = 1:1 and 1: 2, some aggregates were formed, accompanied by a large number of small spherical particles, and Ca2 / Ba2 = 1: 2 formed a larger aggregate. When Ca2 / Ba2 = 1:3 and pure barium ion salt, the precipitation is mainly rod-like and irregular polyhedron. According to XRD and FTIR analysis, with the increase of Ba2 concentration, the co-precipitated product Ca CO3 gradually changed from calcite to aragonite, and finally formed a relatively stable aragonite structure.
【學(xué)位授予單位】：蘭州交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TQ423.2;TB383.1
本文編號：2454142
[Abstract]:Octane phenol polyoxyethylene ether (OP-10), as a non-ionic surfactant, has excellent levelling, emulsifying, wetting, diffusion and antistatic properties. In order to provide a reference for the preparation of nanomaterials by microemulsion method, the stable microemulsion region should be studied when OP-10 is used to prepare microemulsion. A series of pseudo-ternary microemulsion phase diagrams of octane phenol polyoxyethylene ether (OP-10) alcohol (n-butanol, isoamyl alcohol or n-octanol) cyclohexane water (or Ca Cl2 aqueous solution) were drawn. The effects of the addition ratio of n-octanol and the concentration of calcium chloride solution on the microemulsion region were studied. It was found that the mass ratio of n-octanol to n-butanol, isoamyl alcohol or n-octanol gradually increased in the phase diagram of pure water. The relative area of the quasi-ternary system presented by the microemulsion region first increased and then decreased. When OP-10: n-butanol = 1.5 渭 1, op _ (10): isoamyl alcohol = 2: 1, op ~ (10): n-octanol = 2.5: 1, the relative area of microemulsion region is the largest. In the phase diagram of Ca Cl2 aqueous solution, the relative area of the microemulsion region of three kinds of alcohols first increased and then decreased, and the effects of different alcohols on the relative area of the microemulsion region were also different, in which the n-butanol with the largest microemulsion area had different effects on the relative area of the microemulsion region. The corresponding Ca Cl2 concentrations of isoamyl alcohol and n-octanol were 0.1 mol / L, 0.5 mol / L and 0.1 mol / L, respectively. Crystallization of deposited metal ions can be seen everywhere in nature, metal ions can make calcium carbonate crystal morphology more or less qualitative change, the most representative is the metal divalent ion, The effect of calcium carbonate on the crystallization of calcium carbonate can be deeply explored through the experimental study. The addition of barium ions into the crystal structure of calcium carbonate will affect the thermal stability and crystallization process of calcium carbonate, and then promote the morphological change between biological and abiotic species. Through the reaction of reactants in the micro-reactor formed by microemulsion, the microemulsion method provides convenience for the preparation of nano-particles. The phase diagram of octane phenol polyoxyethylene ether (OP-10) octanol cyclohexane (Ca Cl2/Ba Cl2) in pseudo-ternary microemulsion system was studied by phase transition point observation. Seven kinds of Ca2 / Ba2 microemulsions with total concentration of 1mol/L were prepared and co-precipitated carbonate was prepared by reacting with the aqueous solution of sodium carbonate of equal molar ratio. The seven groups of samples were characterized by scanning electron microscopy (SEM) (SEM). When it is pure calcium ion salt, it mainly forms large incomplete cubic particles. With the addition of barium ions, when Ca2 / Ba2 = 3: 1, the precipitates are cubic and spherical aggregates are mixed, and when the concentration of barium ions increases, when Ca2 / Ba2 = 2: 1, more aggregates are formed. When Ca2 / Ba2 = 1:1 and 1: 2, some aggregates were formed, accompanied by a large number of small spherical particles, and Ca2 / Ba2 = 1: 2 formed a larger aggregate. When Ca2 / Ba2 = 1:3 and pure barium ion salt, the precipitation is mainly rod-like and irregular polyhedron. According to XRD and FTIR analysis, with the increase of Ba2 concentration, the co-precipitated product Ca CO3 gradually changed from calcite to aragonite, and finally formed a relatively stable aragonite structure.
【學(xué)位授予單位】：蘭州交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TQ423.2;TB383.1
【參考文獻】
相關(guān)期刊論文 前1條
1 朱福送;楊秀全;白亮;;助表面活性劑對乙草胺微乳液相圖的影響[J];精細化工;2010年07期
，本文編號：2454142
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