| 학회 |
한국공업화학회 |
| 학술대회 |
2021년 봄 (05/12 ~ 05/14, 부산 벡스코(BEXCO)) |
| 권호 |
25권 1호 |
| 발표분야 |
포스터-고분자 |
| 제목 |
Charge-reversed electro-jet writing (CREW) process toward micro 3D architecture |
| 초록 |
Electrospinning techniques offer a range of attractive properties, such as scalability and compatibility using various materials, but typically lack to prepare precise micro 3D architecture. Once the electrified jet is ejected from the needle, the trajectory of jet is governed by a balance of destabilizing charge-charge repulsion and restorative viscoelastic forces. We discovered that charge reversal during the electro-jet writing can enable the production of micro 3D architecture. Compared to conventional electrospinning processes, the reversal of the voltage polarity lowers the net surface potential on the ejected jet and thus dampens the whipping instabilities typically observed during conventional electrospinning. In the absence of whipping instabilities, precise deposition of polymeric fibers becomes attainable. Importantly, the same principles can be applied to 3D jet writing using an array of needles resulting in complex composite materials. |
| 저자 |
문성준1, 이승복1, 정찬호1, 이경진2, 이정용1
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| 소속 |
1한국과학기술원, 2충남대 |
| 키워드 |
Electrospinning; Microfiber; 3D micro structure; CREW
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| E-Mail |
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