Synthesis Optimization of Quaternized Chitosan and its Action as Reducing and Stabilizing Agent for Gold Nanoparticles

The optimal conditions for synthesizing quaternized chitosan (QCS) via microwave irradiation were explored. The microwave temperature, time, power, mole ratio between chitosan and 2,3-epoxypropyltrimethyl ammonium chloride (ETA), volume ratio between isopropanol and water, and pH value of the reacti...

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Bibliographic Details
Published inJournal of macromolecular science. Part A, Pure and applied chemistry Vol. 50; no. 12; pp. 1194 - 1200
Main Authors Ling, Yunzhi, Luo, Yuqiong, Luo, Jiwen, Wang, Xiaoying, Sun, Runcang
Format Journal Article
LanguageEnglish
Published Colchester Taylor & Francis Group 01.01.2013
Taylor & Francis
Subjects
Ammonium chlorides
Applied sciences
Chitosan
Cross-disciplinary physics: materials science; rheology
degree of substitution
Exact sciences and technology
Gold
gold nanoparticles
Isopropanol
Materials science
microwave irradiation
Microwaves
Nanoparticles
Nanopowders
Nanoscale materials and structures: fabrication and characterization
Natural polymers
Optimization
Physicochemistry of polymers
Physics
Quaternized chitosan
Starch and polysaccharides
X-ray photoelectron spectroscopy
Gold
Nanoparticle
gold nanoparticles
Reagent polymer
Quaternized chitosan
Experimental study
Metal particle
Reducing agent
Optimization
Operating conditions
Quaternary ammonium compound
Chemical reduction
Chemical modification
degree of substitution
Chitosan derivatives
Gold compound
Preparation
Epoxide
Addition reaction
Microwave irradiation
Oside polymer
Chemical synthesis
Quaternary ammonium polymer
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Summary:The optimal conditions for synthesizing quaternized chitosan (QCS) via microwave irradiation were explored. The microwave temperature, time, power, mole ratio between chitosan and 2,3-epoxypropyltrimethyl ammonium chloride (ETA), volume ratio between isopropanol and water, and pH value of the reaction system were studied to evaluate the effect on the degree of substitution (DS). The structure of QCS was characterized by means of FT-IR, NMR, XPS and XRD. TGA and DTG were used to measure its thermal stability. At last, QCS acted as a reducing and stabilizing agent to greenly synthesize gold nanoparticles without adding any other chemical reagent.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1060-1325
1520-5738
DOI:10.1080/10601325.2014.843394