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제125회 대한화학회 학술발표회 및 총회 3D Printing Nanocomposite- Ink Formulation for Soft Matter Photo-actuator

2020년 2월 6일 10시 03분 42초
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Polymer Chemistry
저자 및
Monica cahyaning Ratri, 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.