Polymerizabilities of amphiphilic monomers with controlled arrangements in Langmuir-Blodgett films |
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Authors: | Kiyoshige Fukuda Yoshio Shibasaki Hiroo Nakahara |
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Affiliation: | Faculty of Science, Saitama University, Urawa 338, Japan |
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Abstract: | Polymerization of amphiphilic monomer Langmuir-Blodgett (LB) films, such as long-chain derivatives of -amino acids and diynoic, trienoic and acrylic acids, was studied. Multilayers of these monomers were prepared on CaF2 or quartz plates by the LB method under various conditions, and polymerization processes were followed by IR and UV spectroscopy. The polycondensation of dioctadecyl-- glutamate proceeded easily in LB films at ordinary temperatures below the melting point without any initiation. All-trans- and 9-cis-9,11,13-octadecatrienoic acids polymerized very rapidly in LB films on UV irradiation. Photopolymerization in LB films of 10,12-tricosadiynoic acid was influenced by the deposition modes and annealing, and that of octadecyl acrylate was accelerated by the addition of the long- chain vinyl ether. In any case, polymerization reactions are markedly enhanced by a well-controlled arrangement of the monomer molecules in the LB films. |
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