| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 가을 (10/09 ~ 10/11, 제주컨벤션센터) |
| 권호 |
44권 2호 |
| 발표분야 |
고분자합성 |
| 제목 |
pH-Responsive Poly(acrylic acid-block-N-vinylamine) Amphoteric Block Copolymers in aqueous media |
| 초록 |
A series of poly(acrylic acid-block-N-vinyl amine) (PAA-b-PVAm) amphoteric block copolymers have been synthesized using a combination of activator regenerated by electron transfer atom-transfer radical polymerization (ARGET ATRP) of tert-butyl acrylate and reversible addition-fragmentation chain transfer (RAFT) polymerization of N-vinyl formamide, following by subsequent hydrolysis reaction. Dynamic light scattering (DLS) has been used to study the associative behavior of the copolymers in water as a function of copolymer composition and pH. At the pH range of below and above their isoelectric point (IEP), the block copolymers formed micellar structures with ionized corona of PVAm and PAA, respectively. The IEP of the block copolymers was tuned by changing the length of anionic PAA and cationic PVAm blocks. Photoluminescence spectroscopy(PL) has been used to confirm the loading and release of the fluorescent substance according to the pH change in the PAA-b-PVAm micelle |
| 저자 |
이성규, 곽영제
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| 소속 |
숭실대 |
| 키워드 |
ARGET ATPR; RAFT; Amphoteric; pH responsive
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| E-Mail |
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