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选择润湿性静电纺纳米纤维膜的制备及其在油/水分离中的应用研究

摘要第8-10页
ABSTRACT第10-12页
Contents第13-19页
List of Figures第19-27页
List of Tables第27-28页
Abbreviations第28-30页
CHAPTER 1 INTRODUCTION AND LITERATURE SURVEY第30-66页
    1.1 Introduction第30-31页
    1.2 Wetting parameters第31-32页
    1.3 Theoretical basis第32-36页
        1.3.1 Young's equation第32页
        1.3.2 Wenzel model第32-33页
        1.3.3 Cassie model第33-34页
        1.3.4 Transition between Cassie and Wenzel states第34页
        1.3.5 Limitations of the Wenzel and Cassie equations第34-36页
    1.4 Roughness optimization and design第36-38页
    1.5 Stability of a composite interface and role of hierarchical structure第38页
    1.6 The Cassie-Baxter and Wenzel wetting regime transition第38-40页
    1.7 Superhydrophobic surface with low and high adhesion第40-41页
    1.8 Fabrication methods第41-45页
        1.8.1 Plasma-enhanced CVD (PECVD)第42页
        1.8.2 Electrostatic Process第42页
        1.8.3 Template extrusion第42-43页
        1.8.4 Electrochemical methods第43页
        1.8.5 Electrostatic layer by layer assembly (LBL)第43-44页
        1.8.6 One step electrospinning第44页
        1.8.7 Other Methods第44-45页
    1.9 Electrospinning第45-51页
        1.9.1 History of electrospinning第45-46页
        1.9.2 Electrospinning process第46-48页
        1.9.3 Polymers used in electrospinning第48页
        1.9.4 Effects of various parameters on electrospinning第48页
        1.9.5 Solution parameters第48-49页
            1.9.5.1 Concentration第48页
            1.9.5.2 Viscosity第48-49页
            1.9.5.3 Surface tension第49页
            1.9.5.4 Conductivity/surface charge density第49页
        1.9.6 Processing parameters第49-51页
            1.9.6.1 Applied voltage第49-50页
            1.9.6.2 Feed rate/Flow rate第50页
            1.9.6.3 Types of collectors第50页
            1.9.6.4 Tip to collector distance第50-51页
            1.9.6.5 Ambient parameters第51页
    1.lO Significance of the research第51-53页
        1.10.1 Superhydrophobic films第51-52页
        1.10.2 Oil/water separation第52-53页
    References第53-66页
CHAPTER 2 FABRICATION OF NOVEL FLUORINATED POLYBENZOXAZINE-SILICAFILMS WITH ROBUST SUPERHYDROPHOBICITY第66-91页
    2.1 Introduction第66-69页
    2.2 Experimental第69-71页
        2.2.1 Materials第69页
        2.2.2 Chemical Synthesis of 2,2-bis(3-flourophenyl-3,4-dihydro-2H-1,3-benzoxazinyl) hexaflouro propane (BAF-fa)第69-70页
        2.2.3 Preparation of hybrid films第70页
        2.2.4 Characterization第70-71页
        2.2.5 Durability measurements第71页
    2.3 Result and discussion第71-86页
        2.3.1 Structural confirmation第71-76页
            2.3.1.1 ~1H NMR analysis第71-72页
            2.3.1.2 ~(19)F and ~(13)C NMR analysis第72-73页
            2.3.1.3 FT-IR analysis第73-74页
            2.3.1.4 Thermal ring opening mechanism of BAF-fa第74-76页
        2.3.2 Wetting behavior of BAF-fa/SiO_2 films第76-81页
        2.3.3 Surface topographies of hybrid films coated on the glass surface第81-83页
            2.3.3.1 FE-SEM analysis第81-82页
            2.3.3.2 AFM analysis第82-83页
        2.3.4 Transmittance and durability measurements第83-86页
    2.4 Chapter summary第86页
    References第86-91页
CHAPTER 3 FABRICATION OF SUPERHYDROPHOBIC FILMS WITH ROBUSTADHESION AND DUAL PINNING STATE VIA IN SITU POLYMERIZATION第91-116页
    3.1 Introduction第91-92页
    3.2 Experimental第92-95页
        3.2.1 Materials第92-93页
        3.2.2 Chemical synthesis of BA-a monomer第93页
        3.2.3 Chemical Synthesis of 2,2-bis(3-octadecyl l-3,4-dihydro-2H-l^-benzoxazmyl)hexalfuoro propane (BAF-oda)第93-94页
        3.2.4 Preparation of films第94页
        3.2.5 Characterization第94-95页
    3.3 Results and Discussion第95-110页
        3.3.1 Structural confirmation第95-101页
            3.3.1.1 ~1H NMR analysis第95-96页
            3.3.1.2 ~(13)C NMR analysis第96-97页
            3.3.1.3 FT-IR analysis and existence of intramolecular hydrogen bonding第97-99页
            3.3.1.4 Thermal ring opening mechanism of BAF-fa第99-101页
        3.3.2 Wetting behaviour of F-PBZ/SNP films第101-102页
        3.3.3 Surface topographies and hierarchical roughness of F-PBZ/SNP films第102-105页
            3.3.3.1 FE-SEM analysis第102-104页
            3.3.3.2 Optical profilometry analysis第104-105页
        3.3.4 Dual pinning characteristics of F-PBZ/SNP films第105-107页
        3.3.5 Applications of BF-3/SNP-0.8 and BF-3/SNP-2第107-110页
            3.3.5.1 High-adhesion superhydrophobic surface第107-108页
            3.3.5.2 Water droplet transportation第108页
            3.3.5.3 Self-cleaning action第108-109页
            3.3.5.4 Durability第109-110页
    3.4 Chapter summary第110页
    References第110-116页
CHAPTER 4:DESIGNING HIERARCHICAL SUPERHYDROPHOBIC ANDSUPEROLEOPHILIC NANOFIBROUS MEMBRANES FOR GRAVITY DRIVENOIL/WATER SEPARATION第116-137页
    4.1 Introduction第116-117页
    4.2 Experimental第117-121页
        4.2.1 Materials第117页
        4.2.2 Chemical Synthesis and curing of 2,2-bis(3-octadecyl 1-3,4-dihydro-2H-1,3-benzoxazinyl)hexafluoro propane (BAF-oda)第117-118页
        4.2.3 Fabrication of FSNP@PAN hierarchical NF membranes第118-120页
        4.2.4 Fabrication of nanofibrous membranes第120页
        4.2.5 Oil/water separation experiment第120页
        4.2.6 Characterization第120-121页
    4.3 Results and discussion第121-133页
        4.3.1 Curing behaviour of BAF-oda第121-122页
        4.3.2 Morphology and mechanical behaviour第122-126页
        4.3.3 Wetting analysis第126-129页
        4.3.4 Pore structure第129-130页
        4.3.5 Oil/water separation第130-133页
        4.3.6 Durability measurement第133页
    4.4 Chapter summary第133-134页
    References第134-137页
CHAPTER 5 SUPERHYDROPHILIC AND PREWETTED OLEOPHOBIC NANOFIBROUSMEMBRANES FOR ULTRAFAST OIL/WATER SEPARATION第137-162页
    5.1 Introduction第137-139页
    5.2 Experimental第139-141页
        5.2.1 Materials第139页
        5.2.2 Fabrication of PG NF membranes第139-140页
        5.2.3 Fabrication of x-PEGDA@PG NF membranes第140页
        5.2.4 Oil/water separation experiment第140页
        5.2.5 Oil contents in filtrate第140-141页
        5.2.6 Characterization第141页
    5.3 Results and discussion第141-155页
        5.3.0 FE-SEM analysis of PG-x NF membranes第141-142页
        5.3.1 Mechanical properties of PG-x NF membranes第142-143页
        5.3.2 FE-SEM analysis of x-PEGDA@PG-x NF membranes第143-144页
        5.3.3 Mechanical properties of x-PEGDA@PG-x NF membranes第144-145页
        5.3.4 FT-IR analysis of PEGDA and x-PEGDA第145页
        5.3.5 Wetting comparison of NF membranes第145-147页
        5.3.6 Pore structure of NF membranes第147-149页
        5.3.7 Oil/water separation第149-155页
            5.3.7.1 Separation of oil/water mixture and oil-in-water emulsion第149-150页
            5.3.7.2 Oil-in-water emulsion separation mechanism第150-151页
            5.3.7.3 Oil content measurement in permeate第151-152页
            5.3.7.4 Flux rates第152-155页
    5.4 Chapter summary第155页
    References第155-162页
ACKNOWLEDGEMENTS第162-163页
List of Publications第163-165页

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