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High modulus ratio shape-memory polymers achieved by combining hydrogen bonding with controlled crosslinking

Authors

  • Yi Pan,

    1. Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, People's Republic of China
    2. Graduate School of Chinese Academy of Sciences, Beijing 100039, People's Republic of China
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  • Tuo Liu,

    1. Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, People's Republic of China
    2. Graduate School of Chinese Academy of Sciences, Beijing 100039, People's Republic of China
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  • Jing Li,

    1. Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, People's Republic of China
    2. Graduate School of Chinese Academy of Sciences, Beijing 100039, People's Republic of China
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  • Zhaohui Zheng,

    1. Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, People's Republic of China
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  • Xiaobin Ding,

    Corresponding author
    1. Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, People's Republic of China
    • Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, People's Republic of China
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  • Yuxing Peng

    1. Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, People's Republic of China
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Abstract

A new type of poly(methyl acrylate)-co-(acrylic acid) (PMA-AA) networks obtained by combining hydrogen bonding with controlled crosslinking exhibit full and rapid shape-memory recovery. The structure, thermal properties, dynamical mechanical properties and shape-memory effects of these networks were presented. High modulus ratios were achieved for the series of PMA-AA networks based on intense self-complementary hydrogen bonding in poly(acrylic acid) (PAA) segments. This lead to excellent shape-memory effects with strain-recovery ratio above 99%. Meanwhile, faster recovery speed was achieved by the synergistic effect of hydrogen bonding and controlled crosslinking compared to the linear PMA-AA copolymers. © 2011 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 49: 1241–1245, 2011

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