| 학회 |
한국고분자학회 |
| 학술대회 |
2017년 봄 (04/05 ~ 04/07, 대전컨벤션센터) |
| 권호 |
42권 1호 |
| 발표분야 |
신진연구자 특별 심포지움 (영어발표) |
| 제목 |
Versatile underwater adhesive with microarchitecture triggered by solvent exchange |
| 초록 |
Polyelectrolyte complexation is critical to the formation and properties of many biological and polymeric materials, and is typically initiated by aqueous solution mixing that results in fluid-fluid phase separation, e.g., coacervation. Here we report a versatile and strong wet-contact adhesive inspired by sandcastle worm cement that enables both a triggered complexation of polyelectrolytes, and formation of a porous architecture. A catechol-functionalized weak poly-anion was premixed with a poly-cation in dimethyl sulfoxide (DMSO). The polymer solution was applied underwater to substrates where electrostatic complexation, phase inversion, and rapid setting were actuated by water-DMSO solvent exchange. This process offers enhanced spatial and temporal control of complexation, thereby fostering rapid and robust underwater adhesion of complexed catecholic polyelectrolytes to all tested surfaces including plastics, glasses, metals, and biological surfaces. |
| 저자 |
이동욱1, Qiang Zhao2, B. Kollbe Ahn2, Sungbaek Seo2, Yair Kaufman2, Jacob N. Israelachvili2, J. Herbert Waite2
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| 소속 |
1울산과학기술원, 2UC Santa Barbara |
| 키워드 |
Adhesives; Biomimetrics; Coascervates; Catechol
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| E-Mail |
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