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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/27935


    標題: Synthesis and Characteristics of Poly(methacrylic acid-co-N-isopropylacrylamide) Thermosensitive Composite Hollow Latex Particles and Their Application as Drug Carriers
    作者: Pan, Tzu-Yu
    Lee, Chia-Fen
    Chu, Chun-Hsun
    貢獻者: 化妝品應用與管理系
    關鍵字: Control Release
    Core-Shell Polymers
    Emulsion Polymerization
    Hollow Latex Particles
    Latices
    Lcst
    Soapless Emulsion Polymerization
    Thermosensitive
    日期: 2013-12
    上傳時間: 2014-05-26 10:49:40 (UTC+8)
    出版者: Wiley-Blackwell
    摘要: In this work, the poly(methacrylic acid-co-N-isopropylacrylamide) thermosensitive composite hollow latex particles was synthesized by a three-step reaction. The first step was to synthesize the poly(methyl methacrylate-co-methacrylic acid) (poly(MMA-MAA)) copolymer latex particles by the method of soapless emulsion polymerization. The second step was to polymerize methacrylic acid (MAA), N-isopropylacrylamide (NIPAAm), and N,N-methylenebisacrylamide in the presence of poly(MMA-MAA) latex particles to form the linear poly(methyl methacrylate-co-methacrylic acid)/crosslinking poly(methacrylic acid-co-N-isopropylacrylamide) (poly(MMA-MAA)/poly(MAA-NIPAAm)) core-shell latex particles. In the third step, the core-shell latex particles were heated in the presence of ammonia solution to form the crosslinking poly(MAA-NIPAAm) thermosensitive hollow latex particles. The morphologies of poly(MMA-MAA)/poly(MAA-NIPAAm) core-shell latex particles and poly(MAA-NIPAAm) hollow latex particles were observed. The influences of crosslinking agent and shell composition on the lower critical solution temperature of poly(MMA-MAA)/poly(MAA-NIPAAm) core-shell latex particles and poly(MAA-NIPAAm) hollow latex particles were, respectively, studied. Besides, the poly(MAA-NIPAAm) thermosensitive hollow latex particles were used as carriers to load with the model drug, caffeine. The effect of various variables on the amount of caffeine loading and the efficiency of caffeine release was investigated. (c) 2013 Wiley Periodicals, Inc.
    Appears in Collections:[化妝品應用與管理系(所)] 期刊論文

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