High modulus ratio shape-memory polymers achieved by combining hydrogen bonding with controlled crosslinking
✍ Scribed by Yi Pan; Tuo Liu; Jing Li; Zhaohui Zheng; Xiaobin Ding; Yuxing Peng
- Book ID
- 105339602
- Publisher
- John Wiley and Sons
- Year
- 2011
- Tongue
- English
- Weight
- 514 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0887-6266
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✦ Synopsis
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