Shape memory polyurethanes fibers

Shape memory polyurethane fiber Comfort elasticity Body temperature active... 

Figure 3.3 Development of shape memory polyurethane fibers.

Healing of Thermosetting Polymer by Embedded Unidirectional (1-D) Shape Memory Polyurethane Fiber (SMPF)... 

Now let us consider the effect of recovery stress by the shape memory polyurethane fibers (SMPFs) on the diffusion process. The recovery stress, diffusion process by pushing the TP chains into the matrix, which helps overcome the diffusion barriers. In other words, it reduces the diffusion activation energy. Therefore, the diffusion coefficient can be... 

Zhu Y, H.J., Yeung L.Y., Liu Y, Ji F.L. and Yeung K.W. (2006), Development of shape memory polyurethane fiber with complete shape recoverability. Smart Materials and Structures, 15 pp. 1385-1394. 

Zhu, Y, Hu, J., Yeung, L.-Y, Lu, J., Meng, Q., etal. (2007a), Effect of steaming on shape memory polyurethane fibers with various hard segment contents. Smart Materials and Structures, 16, 969-81. 

Tobushi, H., Hara, H., Yamada, E., Hayashi, S. (1996), Thermo-mechaiucal properties in a thin film of shape memory polymer of polyurethane series. Smart Mater. Struct., 5,483. Zhu, Y, Hu, J. L., Yeung, L. Y, Liu, Y, Ji, F. L., Yeung, K. W. (2006), Development of shape memory polyurethane fiber with complete shape recoverability. Smart Materials and Structures, 15, p. 1385-94. 

Meng and Hu (2008) incorporated MWNT into the shape memory polyurethane fiber by in-situ polymerization with treatment of MWNT in concentrated nitric acid and sulfuric acid. Shen et al. (2008) premixed CNT with poly(ethylene terephthalate) (PET) in a solvent followed by melt spinning after drying the mixture. They demonstrated that the tensile strength of the composite fibers inereased by 36.9% (from 4.45 to... 

Ji, and K. W. Yeung, "Development of Shape Memory Polyurethane Fiber with Complete Shape Recoverability," Smart Materials Structures, vol. 15, pp. 1385-1394, 2006. 

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