Preparation and Evaluation of Graphene/Polyvinyl Alcohol-coated Thermoplastic Elastomer Filament

Jung, Imjoo; Lee, Sun Hee

doi:10.1007/s12221-023-00105-y

Fibers Polym

2023

DOI: 10.1007/s12221-023-00105-y

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Preparation and Evaluation of Graphene/Polyvinyl Alcohol-coated Thermoplastic Elastomer Filament

Imjoo Jung

Sun Hee Lee

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Cited by 2 publications

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“…In previous studies, we have investigated materials for the fabrication of soft electronic meta-structure sensors via FFF 3D printing, including TPU 35–39 and ready-made carbon/polylactic acid (PLA) material filaments. 39–41 In addition, we have investigated the manufacturing of strain sensors by dip-coating castor-oil-based waterborne polyurethane (CWPU) on TPU outputs with an auxetic structure, 42,43 conductive filaments by coating GR on filaments, 44 and compression sensors by coating GR on TPU outputs. 45 However, the TPU-based 3D printed sensor manufactured via coating exhibited low conductivity and suffered from peeling.…”

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Three-dimensional printed re-entrant strain sensor using various carbon types/thermoplastic polyurethane filaments

Jung,

Lee

2023

Textile Research Journal

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In this study, to fabricate a soft conductive re-entrant (RE) strain sensor using a fused filament fabrication three-dimensional (3D) printer, carbon/thermoplastic polyurethane (TPU) filaments with three carbon materials—graphene (GR), carbon fiber (CF), and carbon black (CB)—were analyzed. The 3D printing performance of carbon/TPU was evaluated to confirm the applicability to 3D printing. Firstly, the results of the carbon/TPU filament, morphology, and X-ray diffraction analysis confirmed GR-TPU exhibited crystallinity, and the size of the CB particles was the smallest at <100 nm. For the thermal property, thermogravimetric analysis indicated that the carbon content of CB-TPU was the highest. In addition, differential scanning calorimetry showed that, depending on the carbon material content, the Tg of CB-TPU was the highest. However, since the particles were the smallest, they were easily dispersed and the Tm was the lowest. An analysis of the tensile properties indicated that GR-TPU was the weakest, CF-TPU was hard and brittle, and CB-TPU was the softest and toughest. The conductivity of CB-TPU was 36.12 mA, so it was 25 times higher than the other filaments. The results of the 3D printed RE pattern using various types of carbon/TPU and CB-TPU exhibited the best output performance. The results of the tensile property of the 3D printed RE pattern were similar to those of the filaments. In addition, the conductivities of the 3D printed RE patterns were improved more than the filament status, as ordered during 3D printing. Therefore, 3D printed carbon/TPU can be used as a basis for manufacturing soft sensors.

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Three-dimensional printed re-entrant strain sensor using various carbon types/thermoplastic polyurethane filaments

Jung,

Lee

2023

Textile Research Journal

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OphthalMimic: A new alternative apparatus without animal tissue for the evaluation of topical ophthalmic drug products

Barbalho,

Falcão,

Alves Amaral

et al. 2024

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Preparation and Evaluation of Graphene/Polyvinyl Alcohol-coated Thermoplastic Elastomer Filament

Cited by 2 publications

References 33 publications

Three-dimensional printed re-entrant strain sensor using various carbon types/thermoplastic polyurethane filaments

Three-dimensional printed re-entrant strain sensor using various carbon types/thermoplastic polyurethane filaments

OphthalMimic: A new alternative apparatus without animal tissue for the evaluation of topical ophthalmic drug products

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