文化大學機構典藏 CCUR:Item 987654321/2506
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    题名: Preparation, structure, and properties of styrene-ethylene-butylene-styrene block copolymer/clay nanocomposites: Part II fracture behaviors
    作者: Lai, S. M.
    Chen, Wen-Chih
    Chen, C. -M.
    贡献者: 化材系
    关键词: Styrene-ethylene-butylene-styrene block copolymer Montmorillonite
    Nanocomposite
    Compatibilizer
    Fracture
    日期: 2008
    上传时间: 2009-11-03 14:45:57 (UTC+8)
    摘要: Styrene-ethylene-butylene-styrene block copolymer (SEBS)/clay nanocomposites were prepared via a melt mixing technique. Various amounts of two types of maleated compatibilizers. styrene-ethylene-butylene-styrene block copolymer grafted maleic anhydride (SEBS-g-MA) and polypropylene grafted maleic anhydride (PP-g-MA), were incorporated to improve the dispersion of commercial organoclay (denoted as 20A), respectively. PP-g-MA compatibilized system conferred higher tensile strength and tear strength (initiation condition) than SEBS-g-MA compatibilized system. At a fixed content of compatibilizers, the above mechanical properties were improved with increasing clay content as well. By relating tensile strength to tear strength (arrest condition), the average depth of flaw was in the range of 33.8 +/- 3.4 mu m, which successfully confirmed the extension of Rivlin and Thomas's theory for conventional elastomers to thermoplastic elastomer/clay nanocomposites for the first time. Cutting strength of SEBS/clay nanocomposites gave an intermediate value when compared with crystalline plastics and conventional amorphous elastomers, which further signified the importance of micro-yielding of styrene domains, crystalline yielding of compatibilizer, and filler reinforcement even in the nano-fracture zone of deformation. (C) 2008 Elsevier Ltd. All rights reserved.
    關聯: EUROPEAN POLYMER JOURNAL Volume: 44 Issue: 11 Pages: 3535-3547
    显示于类别:[化學工程與材料工程學系暨碩士班] 期刊論文

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