殼聚糖衍生物分子結(jié)構(gòu)中含有大量的氨基和羥基基團(tuán),且其無毒,成本低,可大量獲得,因而殼聚糖衍生物可以用作高效的吸附劑,以除去重金屬。這一點(diǎn)已經(jīng)受到了廣泛的關(guān)注。然而,殼聚糖分子間存在的強(qiáng)氫鍵作用使得殼聚糖具有穩(wěn)定的晶體結(jié)構(gòu),這導(dǎo)致殼聚糖在中性或堿性pH環(huán)境下不溶解,因而殼聚糖的應(yīng)用受到了很大的限制。因此,降解得到窄分子量分布低聚殼聚糖（NLCSn, n表示聚合度）,以提高其在中性水溶液的溶解性是非常必要的。利用羧基如丙酮酸（PA）分子對NLCSn進(jìn)行修飾,以提高其對金屬離子的選擇性和吸附能力。窄分子量分布低聚殼聚糖的羧甲基化衍生物分子有很多活性基團(tuán),如氨基,羧基,羥基,這些活性基團(tuán)的存在使得這類窄分子量分布低聚殼聚糖衍生物能夠與很多金屬離子進(jìn)行絡(luò)合。從吸附方面來說,將溶于酸性或中性條件下的窄分子量分布低聚殼聚糖羧甲基衍生物與戊二醛（GLA）進(jìn)行交聯(lián),以增強(qiáng)機(jī)械強(qiáng)度和化學(xué)抵抗性。本論文的第一個(gè)研究內(nèi)容是制備得到交聯(lián)化的NLCS。丙酮酸衍生物,并對其結(jié)構(gòu)進(jìn)行表征。首先,殼聚糖降解成兩類窄分子量分布低聚殼聚糖（NLCS8和NLCS11）,再通過丙酮酸（PA）進(jìn)行修飾,最后再與戊二醛（GLA）交... 

【文章來源】：江蘇大學(xué)江蘇省

【文章頁數(shù)】：159 頁

【學(xué)位級別】：博士

【文章目錄】：
ABSTRACT
摘要
CHAPTER 1 INTRODUCTION
CHAPTER 2 OBJECTIVES
CHAPTER 3 LITERATURE REVIEW
    3.1. INTRODUCTION
    3.2 Preparation and characterization of some carboxymethyl chitosan derivatives
        3.2.1 Preparation of O-carboxymethyl chitosan(O-CMCS)
        3.2.2 Preparation of N-carboxymethyl chitosan(N-CMCS)
        3.2.3 Preparation of N,O-carboxymethyl chitosan(N,O-CMCS)
        3.2.4 Preparation of N,N-dicarboxymethyl chitosan(N,N-DCMCS)
        3.2.5 Preparation of N-succinyl chitosan(N-SCS)
    3.3 Characterization of carboxymethyl chitosan
        3.3.1 Fourier Transform Infra-red spectroscopy
        3.3.2 Scanning electron microscopy
        3.3.3 Thermogravimetric analysis(TGA)
        3.3.4 X-ray diffraction
        3.3.5 BET surface area analysis
        3.4 Chelating and sorption properties of carboxymethyl chitosan
    3.5 Batch experiments
        3.5.1 Adsorption Equilibrium
        3.5.2 Adsorption Kinetics
        3.5.3 Adsorption Thermodynamic
CHAPTER 4 PREPARATION AND CHARACTERIZATION OF CROSSLINKED NARROW MOLECULAR WEIGHT DI STRIBUTION AND LOW POLYMERIZATION DEGREE CHITOSAN PYRUVIC ACID DERIVATIVES FOR HEAVY METAL REMOVAL
    4.1 INTRODUCTION
    4.2 MATERIALS AND METHOD
        4.2.1. Materials
        4.2.2. Preparation of NLCS_n(n:8,11)using microwave
        4.2.3. Modification of NLCS_n(n:8,11)with pyruvic acid
        4.2.4. Cross-linking of NLCS_nPA(n:8,11)with glutaraldehyde(GLA)
        4.2.5. Characterization
    4.3 RESULTS AND DISCUSSION
        4.3.1. Characterization
    4.4 CONCLUSIONS
CHAPTER 5 REMOVAL OF LEAD FROM AQUEOUS SOLUTION USING CROSS-LINKED NARROWMOLECULAR WEIGHT DISTRIBUTION AND LOW POLYMERIZATION DEGREE CHITOSAN PYRUVIC ACID DERIVATIVES
    5.1 INTRODUCTION
    5.2 MATERIALS AND METHOD
        5.2.1. Materials
        5.2.2. Preparation and characterization of NLCS_nPA-GLA(n=8,11)
        5.2.3. Standard Pb(Ⅱ)Solution
        5.2.4. Adsorption experiment
        5.2.5. The factorial design
        5.2.6. Isothermal Titration Calorimetry(ITC)
    5.3. RESULTS AND DISCUSSION
        5.3.1. Characte rization
        5.3.2 Factorial design
        5.3.3 ANOVA
        5.3.4 The main factors effects(Adsorbent dosage,Adsorbent type,Pb(Ⅱ)concentration)on adsorption capacity(qe)
        5.3.5 The interaction effects
        5.3.6 Student's t-test
        5.3.7 Normal probability plots
        5.3.8 Adsorption experiment
        5.3.9. Adsorption isotherm models
        5.3.10 Adsorption kinetics study
        5.3.11 Thermodynamic studies
        5.3.12 Isothermal Titration Calorimetry(ITC)data Interpretation
        5.3.13 Pb(Ⅱ)Adsorption Mechanism
    5.4 CONCLUSIONS
CHAPTER 6 COPPER REMOVAL ONTO CROSS-LINKED NARROW MOLECULAR WEIGHTDISTRIBUTION AND LOW POLYMERIZATION DEGREE CHITOSAN PYRUVIC ACID DERIVATIVE:SORPTION EQUILIBRIUM,KINETICS AND THERMODYNAMICS
    6.1 INTRODUCTION
    6.2 MATERIALS AND METHOD
        6.2.1 Materials
        6.2.2. Preparation and characterization of NLCS_(11)PA-GLA
        6.2.3. Standard Cu(Ⅱ)solution
        6.2.4. Batch experiment
    6.3. RESULTS AND DISCUSSION
        6.3.1 Characterization
        6.3.2 Multivariate statistical design of experiments
        6.3.3 ANOVA
        6.3.4. The main factors effects(pH,Temperature,dosage and Cu(Ⅱ) concentration) onremoval efficiency (%R) of NLCS_(11)PA-GLA
        6.3.5 The interaction effects
        6.3.6 Student's t-test
        6.3.7 Normal probability plots
        6.3.8 Sorption experiment
        6.3.9 Sorption Isotherm Models
        6.3.10. Kinetic study
        6.3.11 Thermodynamic studies
        6.3.12. Copper sorption Mechanism
        6.3.13 Desorption studies
    6.4. CONCLUSIONS
CHAPTER 7 GLUTARALDEHYDE CROSS-LINKED NARROW MOLECULAR WEIGHT DISTRIBUTION AND LOW POLYMERIZATION DEGREE CHITOSAN PYRUVIC ACID DERIVATIVE FOR CADMIUM REMOVAL
    7.1 INTRODUCTION
    7.2 MATERIALS AND METHOD
        7.2.1 Materials
        7.2.2. Preparation and characterization of NLCS_8PA-GLA
        7.2.3 Standard Cd(Ⅱ) solution
        7.2.4 Batch experiment
        7.2.5. The factorial design
    7.3 RESULTS AND DISCUSSION
        7.3.1 Characterization
        7.3.2 Factorial design
        7.3.3 ANOVA
        7.3.4 The main factors effects(pH,temperature and Cd(Ⅱ)concentration)on removal efficiency(%R)of NLCS_8PA-GLA
        7.3.5 The interaction effects
        7.3.6 Student's t-test
        7.3.7 Normal probability plots
        7.3.8 Sorption experiment
        7.3.9. Sorption Isotherm Models
        7.3.10 Kinetic study
        7.3.11 Thermodynamic studies
        7.3.12 Cadmium Sorption Mechanism
    7.4 CONCLUSIONS
CHAPTER 8 CONCLUSIONS AND RECOMMENDATIONS
    8.1 CONCLUSIONS
    8.2 INNOVATION OR NOVELTY
    8.3 RECOMMENDATIONS FOR FURTHER RESEARCH
REFERENCES
ACKNOWLEDGEMENT
PUBLICATIONS


【參考文獻(xiàn)】：
期刊論文
[1]Pb（Ⅱ） biosorption using chitosan and chitosan derivatives beads: Equilibrium, ion exchange and mechanism studies[J]. W. S. Wan Ngah,S. Fatinathan.  Journal of Environmental Sciences. 2010(03)
[2]窄分子量分布低聚殼聚糖與HSA相互作用的熒光光譜研究[J]. 劉海寬,王海洋,吳姍姍,張岐,杜金風(fēng),顧海波.  光譜學(xué)與光譜分析. 2009(09)



本文編號：3606104