At present there is significant interest for the development of environmentally friendly polymers and polymer based composites from renewable resources. Worries about greenhouse gas emissions produced by using fossil fuel composed with low degradability of polymers derived from fossil fuel has led to increase in research to develop degradable polymers and composites. Poly（lactic acid） and cellulose are two such examples of degradable polymers that come from renewable resources.The production of ... 

【文章來源】：浙江大學浙江省 211工程院校 985工程院校 教育部直屬院校

【文章頁數(shù)】：71 頁

【學位級別】：碩士

【文章目錄】：
Acknowledgements
Abstract
NOMENCLATURE
CHAPTER 1 IINTRODUCTION
    1.1 The reduction of plastic waste:a future challenge
    1.2 Composites produced from a sustainable feedstock
    1.3 Objectives
    1.4 Thesis outline
CHAPTER 2 BACKGROUND
    2.1 Lignocellulosic fibers
    2.2 Extraction of cellulose from lignocellulosic bioresources
    2.3 Pre-treatments MFC
    2.4 MFC produced from wood-based materials
    2.5 Cellulose structure and morphology
    2.6 Nanocellulose
    2.7 Fiber-reinforced composites
    2.8 Cellulose aerogels
    2.9 Poly(lactic acid)
CHAPTER 3 EXPERIMENTAL MATERIALS & PROCEDURES
    3.1 Materials
    3.2 Methods
        3.2.1 Mercerization
        3.2.2 Preparation of nanocellulose aerogel via chemical defibrillation process
        3.2.3 Preparation of native nanocellulose aqueous gels via Mechanical defibrillation process
        3.2.4 Preparation of crosslinked nanocellulose aerogels from the aqueous gels
        3.2.5 Preparation of nanocellulos aerogels Composite
    3.3 Characterisation
        3.3.1 Scanning Electronic microscopy analysis
        3.3.2 Density measurement
        3.3.3 Specific surface area & porosity size distribution analysis
        3.3.4 Fourier transform infrared (FTIR) spectroscopic analysis
        3.3.5 Thermogravimetric analysis (TGA)
        3.3.6 Differential scanning calorimetry (DSC) analysis
CHAPTER 4 RESULTS AND DISCUSSION
    4.1 Characterization of bamboo nanocellulose aerogels via mechanical and chemicaldefibrillation
        4.1.1 Morphology and structure properties 24
        4.1.2 Thermogravimetric analysis (TGA)
        4.1.3 Fourier transform infrared spectroscopy (FTIR)
    4.2 Characterization of nanocellulose/PLA composites from different lignocellulosic materialsin range of PLA content
        4.2.1 Morphology and structure properties
        4.2.2 Thermogravimetric analysis (TGA)
        4.2.3 Differential scanning calorimetry (DSC)
        4.2.4 Fourier transform infrared spectroscopy (FTIR)
        4.2.5 BET Specific surface area and BJH pore size distribution
CHAPTER 5 CONCLUSIONS AND PERSPECTIVE
    5.1 General conclusion
    5.2 Perspective
References Cited
ELMIRA ZAREI



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