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Preparation of Organic/In Organic Nanocomposites by UV Photopolymerization

Author: ZhangZiPing
Tutor: NieJun
School: Beijing University of Chemical Technology
Course: Materials Science and Engineering
Keywords: Photopolymerization Nanocomposites Organic - inorganic Montmorillonite Photoinitiator
CLC: TB383.1
Type: Master's thesis
Year: 2011
Downloads: 40
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Abstract


UV light polymerization of organic - inorganic nanocomposites combines the advantage of photopolymerization nanocomposites. In this thesis, mainly from the the photopolymerization system's core component - photoinitiators paper prepared by photopolymerization organic - inorganic phase by chemical crosslinking montmorillonite / polymer composites. This thesis work as follows: 1,4 - hydroxy benzophenone by the reaction of acryloyl chloride with the introduction of a double bond, with diethylamine, piperazine, dodecylamine through the Michael addition reaction synthesis tertiary amine with iodopropane quarter ammonium salt, three kinds quaternary ammonium product DEBPI the, PDBPI DDBPI,. Intercalating agent to a quaternary ammonium salt photoinitiator, and montmorillonite solution ion exchange reaction, the characterization results initiator DEBPI the full exchange reaction of Na montmorillonite interlayer is not in the ion exchange PDBPI, form a highly efficient XRD characterization results of the activity of soil; DDBPI-MMT prove interlayer spacing expanded quaternary ammonium salt initiator successfully inserted into the layer of montmorillonite, thermal gravimetric analysis data can be quantitatively calculated inserted into the layer of montmorillonite organic initiators weight fraction of the agent. 2, the organic active montmorillonite DDBPI-MMT as light initiator and an inorganic filler component of the polymerization system, TPGDA as a reactive diluent, CN964 oligomer, adds a different mass fraction montmorillonite, under the conditions of the different light intensities UV polymerization. Characterized by FTIR results show add montmorillonite mass fraction of only 0.5%, the conversion rate of the acrylate double bond is still able to achieve more than 80%, indicating that modified montmorillonite has a good photoinitiating activity; while XRD and TEM The results prove that the modified montmorillonite, part of the peel in the form of partial intercalation dispersed in a resin matrix to form a polymer / Montmorillonite Nanocomposites. 3, with the tertiary amino groups of the initiator 2 - phenylbenzyl -2 - dimethylamino -1 - (4 - morpholinyl benzyl phenyl) butanone BDMB respectively with methyl iodide, dodecyl bromide, and decyl The alkyl bromide quaternary ammonium salts, the quaternary ammonium salt to triggered the agent BDMBI, BDMBD and BDMBB. Ethanol and water as the dispersing solvent BDMBI BDMBD interpolation layer obtained by the reaction of montmorillonite through thermogravimetry and XRD results have shown that the quaternary ammonium salt initiator is not successfully inserted into the layer of montmorillonite; with methanol and water. obtained by the the dispersing solvent BDMBB intercalation reaction montmorillonite Thermogravimetric analysis revealed a small amount of organic matter is introduced into the montmorillonite, the results of XRD montmorillonite after the intercalation reaction layer spacing slightly expanded, but the expansion lesser extent, it can be speculated that only a small amount of initiator to be inserted into the layer of montmorillonite.

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