| 학회 |
한국화학공학회 |
| 학술대회 |
2013년 가을 (10/23 ~ 10/25, 대구 EXCO) |
| 권호 |
19권 2호, p.1770 |
| 발표분야 |
열역학 |
| 제목 |
Cosolvency of a Poly(methyl methacrylate)/Water/2-propanol system and re-collapsing behavior of PMMA nanoparticle gel in the system |
| 초록 |
We investigated the phase behavior of Poly(methyl methacrylate) (PMMA) in water/2-propanol cosolvent system and compared it with PMMA particle gel's re-collapsing behavior. Nanometer-sized PMMA gel particles were prepared by precipitation polymerization and their swelling behavior were determined using photon correlation spectroscopy(PCS). With increasing water fraction in 2-propanol solution, PMMA gel particles exhibit re-collapsing behaviro within cosolvency range of PMMA/water/2-propanol system. The modified double lattice model (MDL) and the Flory-Rhener theory were employed to calculate the Helmholtz energy of mixing and elastic contributions, respectively. The advantage of this work is to be suitable for qualitatively predicting the re-collapsing swelling behavior of the given system.
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| 저자 |
이상민, 배영찬
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| 소속 |
한양대 |
| 키워드 |
cosolvency; swelling behaviro; Poly(methyl methacrylate)
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| E-Mail |
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| 원문파일 |
초록 보기 |
