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    Please use this identifier to cite or link to this item: http://ir.lib.ksu.edu.tw/handle/987654321/3447


    Title: Naphthalene containing Polyimide Nanocomposites Hybrid with Organo-Modified Montmorillonite
    Authors: ChenB. K.
    TsayS. Y. (蔡三元)
    ChenC. P.
    Keywords: polyimide
    nanocomposites
    organoclay
    Date: 2006
    Issue Date: 2009-08-14 23:43:21 (UTC+8)
    Abstract: To improve the thermal and mechanical properties of polyimides, a nanocomposite ofnaphthalene containing polyimide (PI) was hybridized with Montmorillonite (MMT). The PI wassynthesized from a diamine, 2,7-bis (4-aminophenoxy) naphthalene and polymerized with a3,3’,4,4’-benzophenone tetracarboxylic dianhydride via thermal imidization. PI-MMTnanocomposites were then prepared from a DMAc solution of poly(amic acid) precursor and a DMAcdispersion of MMT which were organo-modified with various amount of n-dodecylamine.Characterization results demonstrated that the introduction of a small amount of MMT (up to 5%) ledto enhanced thermal stability and mechanical properties of PI. The 5% weight loss temperature in N2was increased by 46oC in comparison to pristine PI with an organoclay content of 5%. The CTE anddielectric constant were decreased. However, at organoclay contents higher than 5% these propertieswere reduced because the organoclay was poorly dispersed and resulted in aggregate formation.
    Relation: Solid State Phenomena, v. 111, 2006, p. 43-46
    Appears in Collections:[材料工程系所] 期刊論文

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