| 학회 |
한국화학공학회 |
| 학술대회 |
2006년 봄 (04/20 ~ 04/21, 대구 인터불고 호텔) |
| 권호 |
12권 1호, p.805 |
| 발표분야 |
열역학 |
| 제목 |
Glass Transition Temperature of Polycaprolactone, Poly(L-lactide) and Polystyrene in Supercritical Fluids |
| 초록 |
Polymeric materials are characterized by two major types of transition temperatures - the crystalline melting temperature Tm and the glass transition temperature Tg. The crystalline melting temperature is the melting temperature of the crystalline domains of a polymer sample. The glass transition temperature is the temperature at which the amorphous domains of a polymer take on the characteristic properties of the glassy state – brittleness, stiffness, and rigidity. Varieties of methods have been used to determine Tg. The most commonly used method is differential scanning calorimetry (DSC). DSC reflects the change in heat capacity of a sample as a function of temperature by measuring the heat flow required to maintain a zero temperature differential between an inert reference material and the polymer sample. Recrystallization of polycaprolactone, poly(L-lactide) and polystyrene using Aerosol Solvent Extraction System led to higher degree of homogeneity and purity. |
| 저자 |
정현호1, 이윤우2, 유기풍1, 임종성1
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| 소속 |
1서강대, 2서울대 |
| 키워드 |
Glass transition temperature; Supercritical fluid; Polycaprolactone; Poly(L-lactide); Polystyrene
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| E-Mail |
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| 원문파일 |
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