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Preparation and Properties of Polymer/Layered Double Hydroxides Composite Nano-Materials

Author: ZhaoLiNa
Tutor: XuSaiLong
School: Beijing University of Chemical Technology
Course: Chemical Engineering and Technology
Keywords: Polymer / inorganic nanocomposites Layered double hydroxide composite metal oxide Polyvinyl alcohol Sodium alginate Electrospinning Mesoporous materials
CLC: TB383.1
Type: Master's thesis
Year: 2010
Downloads: 128
Quote: 2
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Abstract


Composite of polymer and inorganic nanomaterials is an important part of nano- science and technology , is also one of the important methods of preparation of high-performance polymer materials . Polymer and inorganic composite nano and molecular level , most fully reflected their respective advantages , and scientists around the world has been widespread concern . Complex metal oxide layered double hydroxides (LDHs) are a class of the anionic layered functional materials , because of the unique nature of the composition and structure of adjustable degeneration caused by a wide range of research in the preparation of polymers and inorganic nanocomposites interest. The specific experimental content and experimental results are as follows : 1, uniform and smooth surface colloidal hydrotalcite / nano - composite fibers of polyvinyl alcohol (cLDH / PVA) film material was prepared using electrostatic spinning techniques . Due to the presence of hydrogen bonding interaction between the polymer PVA molecules with of inorganic materials cLDHs Laminates , so the improvement of thermal stability of the the nanocomposite fiber membrane materials . Will cLDH / PVA film nanocomposite fiber surface silanization modification , the ultimate success of the system with high - adhesion superhydrophobic the nanocomposite fiber membrane material . 2, the use of natural polymers - sodium alginate (SA) SA / LDHs nanocomposite mesoporous materials were prepared as a template . SA template effect makes itself smaller than the surface area of ??LDHs precursor material into specific surface greatly improved SA / LDHs the nano composite mesoporous material . The surface of the SA / LDHs nanocomposite mesoporous materials exhibit higher strength acidic activity center . With the SA doping amount of different SA / LDHs morphology , specific surface size and surface acidity center position , the strength of the corresponding change . SA content of 1.5% , the specific surface area of the SA / LDHs nano composite mesoporous materials , surface acidity center of intensity .

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CLC: > Industrial Technology > General industrial technology > Materials science and engineering > Special structural materials
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