Graphene Nanoplatelet Exoskeleton on Polyurethane Foam to Produce Flame‐Retardant, Piezoresistive, and Electromagnetic Interference Shielding Surfaces
Abstract Polyurethane foam (PUF)’s porous structure, light weight, flexibility, and low‐cost properties make it useful in various cutting‐edge technologies. However, time‐consuming, costly, and complicated surface modification methods severely hinder its commercial applications. Herein, an ultrafast...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2023-11-01
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| Series: | Advanced Materials Interfaces |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/admi.202300461 |
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| author | Teklebrahan Gebrekrstos Weldemhret Dong‐Woo Lee Prabhakar M.N. Aamir Iqbal Chong Min Koo Yong Tae Park Jung Il Song |
| author_facet | Teklebrahan Gebrekrstos Weldemhret Dong‐Woo Lee Prabhakar M.N. Aamir Iqbal Chong Min Koo Yong Tae Park Jung Il Song |
| author_sort | Teklebrahan Gebrekrstos Weldemhret |
| collection | DOAJ |
| description | Abstract Polyurethane foam (PUF)’s porous structure, light weight, flexibility, and low‐cost properties make it useful in various cutting‐edge technologies. However, time‐consuming, costly, and complicated surface modification methods severely hinder its commercial applications. Herein, an ultrafast, simple, and cost‐effective surface modification method based on the evaporation of a low boiling point solvent to prepare a multifunctional graphene nanoplatelet (GNP)‐decorated PUF (GNP@PUF) is proposed. Due to the passive heat barrier of GNP sheets, the resulting sponge exhibits excellent flame retardancy by reducing the critical fire retardancy metrics, that is, peak heat release rate, total heat release, and total smoke release by 72%, 50%, and 81%, respectively. In addition, GNP@PUF can function as a piezoresistive sensor and electromagnetic interference (EMI)‐shielding material. As a piezoresistive sensor, it exhibits a wide‐compressive pressure (2.4–112 kPa)/strain (5–70%) range and ultra‐fast response/relaxation time (48/35 ms), wide‐stretching strain (5–100%) range, and it can detect minute human motions by being attached to different parts of the human body. Meanwhile, the composite foam displays good absorption‐dominant EMI shielding performance (≈38 dB), possibly due to conductive dissipation and multiple reflections/scattering of EM waves inside the 3D conductive graphene network. This study provides a simple coating technique for developing multifunctional lightweight foam materials. |
| first_indexed | 2024-03-11T10:29:12Z |
| format | Article |
| id | doaj.art-eda09168019345d0a25bfbbcdfa54be0 |
| institution | Directory Open Access Journal |
| issn | 2196-7350 |
| language | English |
| last_indexed | 2024-03-11T10:29:12Z |
| publishDate | 2023-11-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Materials Interfaces |
| spelling | doaj.art-eda09168019345d0a25bfbbcdfa54be02023-11-15T06:04:02ZengWiley-VCHAdvanced Materials Interfaces2196-73502023-11-011032n/an/a10.1002/admi.202300461Graphene Nanoplatelet Exoskeleton on Polyurethane Foam to Produce Flame‐Retardant, Piezoresistive, and Electromagnetic Interference Shielding SurfacesTeklebrahan Gebrekrstos Weldemhret0Dong‐Woo Lee1Prabhakar M.N.2Aamir Iqbal3Chong Min Koo4Yong Tae Park5Jung Il Song6Research Institute of Mechatronics Department of Mechanical Engineering Changwon National University 20 Changwondaehak‐ro, Uichang‐gu Changwon Gyeongsangnam‐do 51140 Republic of KoreaResearch Institute of Mechatronics Department of Mechanical Engineering Changwon National University 20 Changwondaehak‐ro, Uichang‐gu Changwon Gyeongsangnam‐do 51140 Republic of KoreaResearch Institute of Mechatronics Department of Mechanical Engineering Changwon National University 20 Changwondaehak‐ro, Uichang‐gu Changwon Gyeongsangnam‐do 51140 Republic of KoreaSchool of Advanced Materials Science and Engineering Sungkyunkwan University Seobu‐ro 2066, Jangan‐gu Suwon‐si Gyeonggi‐do 16419 Republic of KoreaSchool of Advanced Materials Science and Engineering Sungkyunkwan University Seobu‐ro 2066, Jangan‐gu Suwon‐si Gyeonggi‐do 16419 Republic of KoreaDepartment of Mechanical Engineering Myongji University 116 Myongji‐ro, Cheoin‐gu Yongin Gyeonggi‐do 17058 Republic of KoreaResearch Institute of Mechatronics Department of Mechanical Engineering Changwon National University 20 Changwondaehak‐ro, Uichang‐gu Changwon Gyeongsangnam‐do 51140 Republic of KoreaAbstract Polyurethane foam (PUF)’s porous structure, light weight, flexibility, and low‐cost properties make it useful in various cutting‐edge technologies. However, time‐consuming, costly, and complicated surface modification methods severely hinder its commercial applications. Herein, an ultrafast, simple, and cost‐effective surface modification method based on the evaporation of a low boiling point solvent to prepare a multifunctional graphene nanoplatelet (GNP)‐decorated PUF (GNP@PUF) is proposed. Due to the passive heat barrier of GNP sheets, the resulting sponge exhibits excellent flame retardancy by reducing the critical fire retardancy metrics, that is, peak heat release rate, total heat release, and total smoke release by 72%, 50%, and 81%, respectively. In addition, GNP@PUF can function as a piezoresistive sensor and electromagnetic interference (EMI)‐shielding material. As a piezoresistive sensor, it exhibits a wide‐compressive pressure (2.4–112 kPa)/strain (5–70%) range and ultra‐fast response/relaxation time (48/35 ms), wide‐stretching strain (5–100%) range, and it can detect minute human motions by being attached to different parts of the human body. Meanwhile, the composite foam displays good absorption‐dominant EMI shielding performance (≈38 dB), possibly due to conductive dissipation and multiple reflections/scattering of EM waves inside the 3D conductive graphene network. This study provides a simple coating technique for developing multifunctional lightweight foam materials.https://doi.org/10.1002/admi.202300461electromagnetic wave absorbersflame retardant propertiesgraphene nanoplateletspiezoresistive sensorspolymeric foams |
| spellingShingle | Teklebrahan Gebrekrstos Weldemhret Dong‐Woo Lee Prabhakar M.N. Aamir Iqbal Chong Min Koo Yong Tae Park Jung Il Song Graphene Nanoplatelet Exoskeleton on Polyurethane Foam to Produce Flame‐Retardant, Piezoresistive, and Electromagnetic Interference Shielding Surfaces Advanced Materials Interfaces electromagnetic wave absorbers flame retardant properties graphene nanoplatelets piezoresistive sensors polymeric foams |
| title | Graphene Nanoplatelet Exoskeleton on Polyurethane Foam to Produce Flame‐Retardant, Piezoresistive, and Electromagnetic Interference Shielding Surfaces |
| title_full | Graphene Nanoplatelet Exoskeleton on Polyurethane Foam to Produce Flame‐Retardant, Piezoresistive, and Electromagnetic Interference Shielding Surfaces |
| title_fullStr | Graphene Nanoplatelet Exoskeleton on Polyurethane Foam to Produce Flame‐Retardant, Piezoresistive, and Electromagnetic Interference Shielding Surfaces |
| title_full_unstemmed | Graphene Nanoplatelet Exoskeleton on Polyurethane Foam to Produce Flame‐Retardant, Piezoresistive, and Electromagnetic Interference Shielding Surfaces |
| title_short | Graphene Nanoplatelet Exoskeleton on Polyurethane Foam to Produce Flame‐Retardant, Piezoresistive, and Electromagnetic Interference Shielding Surfaces |
| title_sort | graphene nanoplatelet exoskeleton on polyurethane foam to produce flame retardant piezoresistive and electromagnetic interference shielding surfaces |
| topic | electromagnetic wave absorbers flame retardant properties graphene nanoplatelets piezoresistive sensors polymeric foams |
| url | https://doi.org/10.1002/admi.202300461 |
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