| 학회 |
한국고분자학회 |
| 학술대회 |
2012년 가을 (10/11 ~ 10/12, 창원컨벤션센터) |
| 권호 |
37권 2호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Hydrogel Microcontainers of Tunable Physical Properties Prepared by Polyionic Complexation |
| 초록 |
We prepared uniform poly(vinylamine) (PVAm) hydrogel capsules with protonated primary amine groups in alkaline condition. Using the electrostatic interactions, PVAm-hyaluronic acid (HA) complexes were generated with two different molecular weights of HA. After introducing gold nanorod (AuNR) to the PVAm-HA complexes, PVAm-short HA chain complex (PVAm-sHA) exhibited improved durability and light stability when compared with PVAm-long HA chain complex (PVAm-lHA) during the local heating of AuNRs by the near-infrared (NIR) irradiation. We thus confirmed with NMR cryoporometry analysis that PVAm-sHA contains denser gel mesh structure than the shell structure with lHA. This, in turn, leads to the PVAm-sHA with higher elastic modulus, which is tested by the micropipette aspiration technique. We thus verified the structural change of polyionic shell complexes by varying the chain length of HAs, leading to the enhancement of mechanical strength and light-induced degradability. |
| 저자 |
이수지1, 박새봄2, 차국헌3
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| 소속 |
1지능형유도조합체연구단, 2에너지환경 화학융합기술전공, 3서울대 |
| 키워드 |
poly(vinylamine); hydrogel capsule; hyaluronic acid
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| E-Mail |
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