Seo, Jiae Hur, Joon Kim, Min-Seok Lee, Tae-Gon Seo, So Jung Han, Seung Ho Seo, Ji-Hun 2024-01-19T13:03:02Z 2024-01-19T13:03:02Z 2022-04-03 2021-12-15 1385-8947 https://pubs.kist.re.kr/handle/201004/115932 In this study, polyrotaxane (PRX), which comprises ring-shaped alpha-cyclodextrin threaded on linear poly(ethylene glycol), is cross-linked with a mixture of two different types of diisocyanate cross-linkers to encompass the cross linked amorphous and non-cross-linked crystalline regions to prepare a highly tough piezoelectric elastomer. The effect of the composition and type of cross-linker on the crystalline structure and mechanical property of the PRX elastomer is investigated via X-ray diffraction, transmission electron microscopy, dynamic mechanical analysis, and tensile testing. The piezoelectric properties of this elastomer and its possible application as a vibration sensor are confirmed through voltage generation and vocal cord sensing tests. Consequently, it has been confirmed for the first time that the PRX molecular structure can induce piezoelectric properties, and that the cross-linked PRX elastomer containing partially crystallized PRX bundles exhibits excellent mechanical toughness and piezoelectric effects. English ELSEVIER SCIENCE SA SLIDE-RING GELS POLYMER NANOGENERATOR NECKLACE BEHAVIOR All-organic piezoelectric elastomer formed through the optimal cross-linking of semi-crystalline polyrotaxanes Article 10.1016/j.cej.2021.130792 1 CHEMICAL ENGINEERING JOURNAL, v.426 CHEMICAL ENGINEERING JOURNAL 426 scie scopus 000724653400003 2-s2.0-85108001771 Engineering, Environmental Engineering, Chemical Engineering Article SLIDE-RING GELS POLYMER NANOGENERATOR NECKLACE BEHAVIOR Polyrotaxane Piezoelectricity Elastomer Toughness Semi-crystalline