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Coil Formation of a Silicone String Using UV-Ozone Treatment.

ABSTRACT: Microcoils are used in various mechanical devices. However, existing methods for producing microcoils from polymers often require expensive equipment. In this study, microcoils were prepared using a cost-effective and simple method. The material used was silicone, which is a biocompatible polymeric material. Silicone was solidified inside glass capillaries to form thin, straight strings with a diameter of 140 μm. The string was then transformed to a coil shape by oxidation using UV-ozone treatment while it was prestretched and pretwisted. The resilience force from the prestretching and pretwisting forces caused the string to bend and twist, respectively. As a result of the combination of these deformation modes, a coil was formed. As an application of the coils, an actuator was prepared, which repeatedly transforms between straight and coiled shapes. The actuation was caused by the swelling/deswelling of silicone with hexane. A large strain of 54% was obtained.

SUBMITTER: Watanabe M

PROVIDER: S-EPMC8992247 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature

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Coil Formation of a Silicone String Using UV-Ozone Treatment.

Watanabe Masashi M Tokutake Toshiki T Harada Ai A Kaminaga Masatoshi M

ACS omega 20220321 13

Microcoils are used in various mechanical devices. However, existing methods for producing microcoils from polymers often require expensive equipment. In this study, microcoils were prepared using a cost-effective and simple method. The material used was silicone, which is a biocompatible polymeric material. Silicone was solidified inside glass capillaries to form thin, straight strings with a diameter of 140 μm. The string was then transformed to a coil shape by oxidation using UV-ozone treatme ...[more]

PMID: 35415360

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