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  • 09월 20일 16시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제126회 대한화학회 학술발표회 및 총회 Formulation of Nanocomposite Hydrogel for Heat Responsive Waterless Soft Actuator

2020년 9월 3일 17시 03분 16초
POLY.P-32 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 21일(수) 17:00~17:30
Polymer Chemistry
저자 및
Monica cahyaning Ratri, Veasna Soum, Kwanwoo Shin*
Department of Chemistry, Sogang University, Korea
Soft actuator, a bio-inspired mimicking system, is the one of strategy in the medical, soft robotic, pharmaceutical, and tissue engineering due to its dynamic movement toward the presence of external stimuli. The 3D printed object offers sophisticated and innovative functions such as jumping, complex 3D movement, gripping and releasing by enhancing the additive manufacturing technique and material synthesis. A 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 have temperature-sensitive property, shrinking above its 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. Therefore, the nanoparticle's illumination with Near Infrared (NIR) can generate heat locally and initiate the heat-induced actuation to PNIPAAm containing matrices. The irradiation of the NIR lamp had been done outside the water. The waterless actuation process is one of the advantages of this system. We formulated and tested PNIPAAm-metal nanoparticle composites as an ink material to fabricate the heat-sensitive soft actuators for photo-responsive soft robotic motions. We will present our preliminary results to formulate the nano-composite ink and photo-responsive reactions of the 3D printed soft actuators. Keywords: Waterless soft actuator, PNIPAAm, Gold nanorods