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Nano-scale structure change of amphiphilic di-block copolymer by blend

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Abstract

The phase transition and nano-scale ordered structure of four types of blends prepared from four di-block copolymers, consisting of hydrophilic poly(ethylenoxide) and hydrophobic poly(methacrylate) derivative, PEOm-b-PMA(Az)n having different PEO molecular length and same degree of polymerization of PMA(Az) were investigated. All blend systems formed hexagonal packed PEO cylinder structure, which was same with the nano-scale structure of these parent block copolymers. The SAXS and AFM observation suggested that the size of hexagonal structure of blend was larger than the average size of parent block copolymers. The melting enthalpy of PEO in blends was larger than the average value of parent block copolymers. DSC, SAXS and AFM observations indicated the miscible blend systems.

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Authors and Affiliations

  1. Graduate School of Engineering, Department of Applied Chemistry, Tokyo Metropolitan University, Tokyo, Japan, 192-0397, 1-1 Minami-osawa, Hachiouji

    Jung S. Y.

  2. Faculty of Urban Environments, Department of Applied Chemistry, Tokyo Metropolitan University, Tokyo, Japan, 192-0397, 1-1 Minami-osawa, Hachiouji

    Yoshida H.

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  1. Jung S. Y.
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  2. Yoshida H.
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Correspondence to Jung S. Y..

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Jung, S.Y., Yoshida, H. Nano-scale structure change of amphiphilic di-block copolymer by blend. J Therm Anal Calorim 85, 719–724 (2006). https://doi.org/10.1007/s10973-006-7660-9

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  • DOI: https://doi.org/10.1007/s10973-006-7660-9

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