[11a-M136-1~10] 12.3 Functional Materials and Novel Devices

[11a-M136-1] Syringe-injectable and self-expandable nanofilms consisting of polyurethane-based shape memory polymers

〇(PC)Kento Yamagishi¹, Akihiro Nojiri², Eiji Iwase², Michinao Hashimoto^1,3 (1.DManD, SUTD, 2.Grad. Sch. Fundamental Sci. Eng., Waseda Univ., 3.EPD, SUTD)

Keywords:shape memory polymer, nanofilms, magnetic nanoparticle

We developed a polyurethane-based shape memory polymer and magnetic nanoparticles-based free-standing ultrathin films (< 1-μm-thick), we termed MNP-SNP nanofilms. The 710-nm-thick MNP-SMP nanofilm (size: 15 x 15 mm²) exhibited following properties: (1) syringe-injectability through the medical needles (20G; I.D.: 0.603 mm; O.D.: 0.9081 mm), (2) self-expandability after ejection, (3) ultra-conformability to the biological surface, and (4) guidablity in an external magnetic field.