| 학회 | 한국고분자학회 |
| 학술대회 | 2004년 가을 (10/08 ~ 10/09, 경북대학교) |
| 권호 | 29권 2호, p.466 |
| 발표분야 | 고분자 합성 |
| 제목 | Synthesis and characterization of environmentally tunable Hydrogel-opals using covalently bonded NIPA - HEAc nanoparticles |
| 초록 | Polymer Gels are a unique class of macromolecular networks that contain a large fraction of solvent within their structure. Their ability to stimulate biological tissues, make them particularly suitable for biomedical applications. In response to environmental stimuli such as temperature and pH, gels can reversibly swell or shrink up to 1000 times in volume and have varied applications such as artificial muscles, controlled drug release, chemical sensors etc. The present study consists of the synthesis of Hydrogels with colloidal crystals using N- isopropyl acrylamide (NIPA) (Monomer with thermally responsive properties) 2-hydroxyethyl acrylate (HEAc) (co-monomer which provides functional group for crosslinking) and Methylene-bis-acrylamide (Crosslinker). PolyNIPA microgel particles formation occurs in water in 700c upon the addition of redox initiator. By adjusting the concentration of the surfactant used, the pour size of the nanoparticals can be controlled. Upon covalently bonding the PolyNIPA nanoparticles using Divinylsulfone beautiful crystal arrays resembling the ‘Opal gems’ were formed. These Hydrogel opals were characterized by various specro-analytical techniques and the physical properties such as swelling rate in different solvents under different conditions, pH sensibility, thermal responsive properties etc were also studied. |
| 저자 | 아누스텔라 메튜, 김일, 하창식 |
| 소속 | 부산대 |
| 키워드 | hydrogel; collodial crystal; nano particle |
