纳米纤维
形状记忆合金
材料科学
静电纺丝
复合材料
制作
退火(玻璃)
形状记忆聚合物
Nafion公司
极限抗拉强度
纳米技术
聚合物
电化学
电极
医学
化学
替代医学
病理
物理化学
作者
Fenghua Zhang,Zhichun Zhang,Yanju Liu,Jinsong Leng
摘要
Shape memory nanofibers are capable of fixing a temporary shape and recovering a permanent shape in response to stimulus. Nafion nanofibers with shape memory effect are achieved via electrospinning technology. The resulting nanofibres exhibit the smooth, continuous, uniform fibrous structure. The diameter of nanofibers increases after annealing progress at different temperatures. The shape memory effect is evaluated in a fixed force controlled tensile test. Electrospun Nafion nanofibers show excellent shape memory properties upon heat. The shape fixity rates and shape recovery rates are about 95-96% and 87-89% after consecutive three shape memory cycles, respectively. The structure of electrospun nanofibers is stable and reversible for at least three cycles of shape memory tests. These results indicate that shape memory Nafion nanofibers can be used in a wide potential application fields such as smart materials and structures in the future.
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