| 세션명 | Graduate Student Oral Session (I) (English) |
|---|---|
| 발표장 | 제5회장 |
| 논문코드 | O5-11 |
| 발표일 | 2024-04-3 |
| 발표시간 | 15:45-16:00 |
| 논문제목 | Programmable Mechanochromic Response in 3D Printable Liquid Crystal Elastomers Incorporating Spiropyran |
| 발표자 | 김경완 |
| 발표자 소속 | 부산대학교 |
| 저자 | 김경완, 김태안1, 안석균† |
| 소속 | 부산대학교; 1한국과학기술연구원 |
| 논문초록 | Spiropyran (SP) that can convert into blue-colored merocyanine under force has been incorporated various polymer matrices to develop strain sensors and damage reporting applications. Herein, the SP mechanophore-incorporated liquid crystal elastomers (SP-LCEs) are synthesized for the first time through a combination of aza-Michael addition reaction and photocrosslinking. Interestingly, the mechanochromic responses of SP-LCEs can be dramatically altered depending on the stretching direction with respect to the nematic director. Further, we demonstrate that direct-ink-writing can be employed to print diverse SP-LCE geometries, and modulate the activation strain of SP-LCE. The ability to program the mechanochromic response of SP-LCE can pave the way to develop an interesting class of anti-counterfeiting materials and strain sensors. |
THE POLYMER SOCIETY OF KOREA