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    • 5. 发明授权
    • Reversible shape memory polymers exhibiting ambient actuation triggering
    • 显示环境致动触发的可逆形状记忆聚合物
    • US09453501B2
    • 2016-09-27
    • US14771928
    • 2014-03-04
    • Patrick T. Mather
    • Patrick T. Mather
    • F03G7/06B29C51/10C08J5/00B29C51/00B29K21/00
    • F03G7/065A61L2400/16B29C51/002B29C51/10B29K2021/006C08J5/00C08J2300/12C08J2300/26
    • Shape memory polymers featuring reversible actuation capability under ambient stimulus for integration with apparel. One approach is to use a multiblock polymer consisting of two (or potentially more) blocks in which the one block is the crystalline switching block with relatively low melting transitions, the other block has a higher thermal transition, and the two blocks are linked together by a linker molecule. Another approach is to use a graft copolymer having high and low melting transitions where the graft copolymer has a first polymer serving as the backbone and a second polymer being grafted to or from the backbone at certain graft locations. A further approach is to use latent crosslinking of a semicrystalline polymer with reactive groups placed on the backbone. Finally, these polymers may be formed as actuators that undergo curling, twisting and even volumetric expansion.
    • 形状记忆聚合物在环境刺激下具有可逆的致动能力,与服装集成。 一种方法是使用由两个(或潜在的更多)嵌段组成的多嵌段聚合物,其中一个嵌段是具有相对低的熔融转变的结晶切换嵌段,另一个嵌段具有较高的热转变,并且两个嵌段通过 连接分子。 另一种方法是使用具有高和低熔点转变的接枝共聚物,其中接枝共聚物具有作为主链的第一聚合物,第二聚合物在某些接枝位置处被接枝到骨架上或从主链上接枝。 另一种方法是使用半结晶聚合物与置于骨架上的反应性基团的潜在交联。 最后,这些聚合物可以形成为经历卷曲,扭曲甚至体积膨胀的致动器。