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제124회 대한화학회 학술발표회, 총회 및 기기전시회 안내 3D Printing Ink Formulation for Soft Matter Photo-Actuator

2019년 8월 22일 12시 49분 44초
POLY.P-27 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 18일 (금요일) 11:00~12:30
Polymer Chemistry
저자 및
Monica cahyaning Ratri, Nahee Kim1, Yeongheon Jung1, Kwanwoo Shin1,*
chemistry, Sogang University, Indonesia
1Department of Chemistry, Sogang University, Korea
Soft actuator, bio-inspired mimicking system is the one of strategy in the medical, soft robotic, pharmaceutical, and tissue engineering[1] due to its dynamic movement toward the presence of external stimuli. By enhancing the additive manufacturing technique and material synthesis, the 3D printed object offers sophisticated and innovative functions such as jumping, complex 3D movement, gripping and releasing. Combination of different formulation of ink, such as active and passive material, can be harnessed to initiate the soft actuator movement expectedly. Poly (N-isopropyl acrylamide) (PNIPAAm) is one of the well-known as active polymers that has temperature sensitive property, shrinking above the lower critical solution temperature (LCST) and swelling below LCST. As a passive material Poly-acrylamide (AAm) combined with alginate has high toughness and elasticity. Due to its surface plasmon resonances (SPR) properties, gold nanorods can absorb light, and release heat to its surrounding [2]. Therefore, the irradiation on the nanoparticle with Near Infrared (NIR) can generate heat locally, and initiate the heat-induced actuation to PNIPAAm containing matrices. We formulated and tested PNIPAAm-metal nanoparticle composites as a bio-ink material to fabricate the heat-sensitive soft actuators for photo-responsive soft robotic motions. In this study, the printability and mechanical properties of the nano-composite bio-ink tested by mechanical measurements, and photo-induced heat responsiveness. We will present our preliminary results how we can formulate the nanocomposite bio-ink, and heat-responsive reactions of the 3D printed soft actuators. Keywords: Soft actuator, PNIPAAm, Gold nanorods References: 1. Sydney Gladman A, Matsumoto EA, Nuzzo RG, Mahadevan L, Lewis JA. Biomimetic 4D printing. Nature Materials. 2016;15:413. doi: 10.1038/nmat4544 https://www.nature.com/articles/nmat4544#supplementary-information. 2. Jana J, Ganguly M, Pal T. Enlightening Surface Plasmon Resonance Effect of Metal Nanoparticles for Practical Spectroscopic Application. RSC Adv. 2016;6. doi: 10.1039/C6RA14173K.