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Mechanical Properties of Green Composites Reinforced with Flaxseed Fiber Bundles

ABSTRACT第5-6页
DEDICATION第7-8页
ACKNOWLEDGEMENTS第8-10页
CONTENTS第10-13页
LIST OF FIGURES第13-15页
LIST OF TABLES第15-16页
LIST OF ABBREVIATIONS第16-17页
1 INTRODUCTION第17-21页
    1.1 Background第17-19页
    1.2 Innovation in this study第19页
    1.3 Meaningfulness and objective第19-20页
    1.4 Scope of this research第20-21页
2 LITERATURE REVIEW第21-37页
    2.1 Natural fibers第21-23页
        2.1.1 Structure of natural fibers第21页
        2.1.2 Physical properties of natural fibers第21-22页
        2.1.3 Chemical composition of natural fibers第22-23页
    2.2 Flax第23-26页
        2.2.1 Fiber flax第23页
        2.2.2 Flaxseed plants第23-24页
        2.2.3 Flaxseed plants-An evaluation第24-25页
        2.2.4 Methods of degumming第25-26页
    2.3 Chemical treatment of natural fibers第26-30页
        2.3.1 Theoretical perspectiyes第27页
        2.3.2 Surface chemical modifications of natural fibers第27-30页
    2.4 Evaluation of the fiber performance and properties第30-31页
        2.4.1 Weight loss percentage第30-31页
        2.4.2 Tensile strength第31页
        2.4.3 Scanning Electron Microscopy(SEM)第31页
        2.4.4 Quantitative chemical analysis第31页
    2.5 Development of natural fiber composites第31-34页
    2.6 Polybutylene Succinate(PBS)as matrix phase第34页
    2.7 Summary第34-37页
3 MATERIALS AND METHODS第37-60页
    3.1 Experimental第37页
    3.2 Materials第37-38页
    3.3 Procedure第38-42页
        3.3.1 Waterlogging第38-39页
        3.3.2 Alkaline treatment of flaxseed fiber bundles第39-42页
    3.4 Scanning electron microscopy (SEM)investigation第42页
    3.5 Weight loss percentage第42页
    3.6 Quantitative composition analysis第42-48页
        3.6.1 Wax第43-44页
        3.6.2 Dissolvable substances第44-45页
        3.6.3 Pectin第45页
        3.6.4 Lignin第45-47页
        3.6.5 Hemicellulose第47-48页
        3.6.6 Cellulose第48页
    3.7 Evaluation and testing methods第48-50页
        3.7.1 Diameter of treated flaxseed fiber第48页
        3.7.2 Evaluation of bundle fiber tensile strength第48-50页
        3.7.3 Effect of temperature on the fiber bundle strength第50页
        3.7.4 Effect of pressure on the fiber bundle strength第50页
    3.8 Selection of matrix第50-51页
    3.9 Composite manufacturing process第51-54页
        3.9.1 Making PBS sheets第52-53页
        3.9.2 Fabrication of flaxseed/PBS composites第53-54页
    3.10 Evaluation of mechanical properties of composites第54-60页
        3.10.1 Tensile strength properties第54-56页
        3.10.2 Flexural strength/bending properties第56-58页
        3.10.3 Scanning Electron Microscopy (SEM)第58-60页
4 RESULTS AND DISCUSSION FOR FLAXSEED FIBER BUNDLES第60-74页
    4.1 Evaluation of alkaline treatment of flaxseed fiber bundles第60页
    4.2 Scanning electron microscopy(SEM)investigation第60-63页
    4.3 Weight loss percentage第63-64页
    4.4 Quantitative composition analysis第64-66页
    4.5 Measurement of diameter of treated flaxseed fiber-Trial第66-68页
    4.6 Bundle fiber tensile strength第68-71页
        4.6.1 Stress-Strain curve第69-70页
        4.6.2 Comparison with previous studies第70-71页
    4.7 Effect of temperature on the fiber bundle strength第71-73页
    4.8 Effect of pressure on the fiber bundle strength第73-74页
5 RESULTS AND DISCUSSION FOR FLAXSEED/PBS COMPOSITES第74-91页
    5.1 Differential Scanning Calorimeter(DSC)test for PBS第74页
    5.2 Composite manufacturing trials and improvements第74-78页
        5.2.1 First trial第74-75页
        5.2.2 Second trial第75-76页
        5.2.3 Third trial第76-77页
        5.2.4 Final trial第77-78页
    5.3 Evaluattion of Mechanical Properties of Composites第78-84页
        5.3.1 Tensile Strength Properties第78-82页
        5.3.2 Flexural strength/bending properties of three-layered laminae composites第82-84页
    5.4 Evaluation of morphology by SEM第84-89页
        5.4.1 SEM micrographs for tensile strength第84-87页
        5.4.2 SEM micrographs for flexural strength test第87-89页
    5.5 Composite fractured surface morphology-Summary第89-91页
6 CONCLUSIONS第91-94页
    6.1 Alkali treatment第91页
    6.2 Tensile properties analysis第91-92页
    6.3 Composition analysls第92页
    6.4 Mechanical properties of flaxseed/PBS composites第92页
    6.5 SEM micrographs of fractured surface第92-94页
REFERENCES第94-102页

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