고농도 폴리비닐 알코올/디메틸 설폭사이드 용액의 유변학적 특성의 시간 의존성

이은정; 김남희; 김병철

Korean Journal of Rheology, Vol.9, No.3, 118-123, September, 1997

Export Citation

고농도 폴리비닐 알코올/디메틸 설폭사이드 용액의 유변학적 특성의 시간 의존성

Time-Dependence of the Reological Properties of Concentrated PVA Solution in DMSO

이은정, 김남희, 김병철

초록

검화도와 분자량이 상이한 폴리비닐 알코올을 디메틸 설폭사이드에 녹여 폴리비닐 알코올/디메틸 설폭사이드 용액을 준비하고, 동적 유변학적 특성에 대한 시간과 온도 의존성을 고찰하였다. 고농도 폴리비닐 알코올 용액의 유변학적 특성은 시간 의존성을 보여주었다. 복합점도와 저장 탄성률은 시간에 따라 증가하였다. 또한, 저장탄성률과 손실탄성률의 그래프에서 저장 탄성률은 시간에 따라 증가하였으나, 기울기는 시간에 따라 감소하였다. 유변학적 특성의 시간 의존성은 분자량이 높을수록, 측정 온도가 높을수록 더 두드러지게 나타났다.

Polyvinyl alcohol (PVA) with different degrees of saponification and molecular weights was prepared. Time-dependence of the dynamic rheological properties of the concentrated solution of PVA in dimethyl sulfoxide (DMSO) was investigated in terms of degree of saponification, molecular weight, and temperature. The concentrated PVA solution in DMSO exhibited time-dependent rheological responses. Both complex viscosity (η^*) and storage modulus (G') were increased with time. On the plot of G' against loss modulus (G"), the G' was increased with time, but its slope was decreased. Further, time dependence of the rheological properties was more noticeable in PVA with higher molecular weight and at higher temperature.

Keywords:PVA;degree of saponification;time-dependence;storage modulus;loss modulus;heterogeneous system

[References]

Morrison RT, Boyd RN, "Organic Chemistry," ; Allyn and Bacon. Inc., Boston, 261 (1973)
Capon AB, Walson DS, Zucco C, J. Am. Chem. Soc., 103, 1761 (1987)
Hirai N, Nippon Kagaku Zasshi, 75, 697 (1954)
Koopal LK, Colloid Polym. Sci., 259, 490 (1981)
Yamaura K, Shindo N, Matsuzawa S, Colloid Polym. Sci., 259, 1143 (1981)
Prokopova E, Stern P, Quadrat D, Colloid Polym. Sci., 263, 899 (1985)
Lozinsky VI, Vainerman ES, Domotenko LV, Mamtsis AM, Titova EF, Belavtseva EM, Rogozhin SV, Colloid Polym. Sci., 264, 19 (1986)
Yokoi H, Kawata S, Iwaizumi M, J. Am. Chem. Soc., 108, 3358 (1986)
Stern P, Prokopova E, Quadrat O, Colloid Polym. Sci., 265, 234 (1987)
Matsuzawa S, Ueberreiter K, Colloid Polym. Sci., 687, 490 (1973)
Eagland D, Vercauteren FF, Scholte TG, Donners WAB, Lechner MD, Mattern R, Eur. Polym. J., 22, 351 (1986)
Cha WI, Hyon SH, Ikada Y, Polym. Prepr., 38, 4406 (1989)
Cebe P, Grubb D, J. Mater. Sci., 20, 4461 (1985)
Japan Patent, 60-108, 711 (1985)
Rogovia LZ, Slonimskii GL, Gembitskii LS, Serovia YA, Grigoreva VA, Guberkova YN, Polym. Sci. USSR, 15, 1411 (1973)
Han CD, Jhon MS, J. Appl. Polym. Sci., 32, 3809 (1986)
Lyoo WS, Kim BC, Ha WS, Polym. Eng. Sci., 37(7), 1259 (1997)
Han CD, Kim JK, Polymer, 34, 2533 (1993)

[Referenced By]

[1] Morrison RT, Boyd RN, "Organic Chemistry," ; Allyn and Bacon. Inc., Boston, 261 (1973)

[2] Capon AB, Walson DS, Zucco C, J. Am. Chem. Soc., 103, 1761 (1987)

[3] Hirai N, Nippon Kagaku Zasshi, 75, 697 (1954)

[4] Koopal LK, Colloid Polym. Sci., 259, 490 (1981)

[5] Yamaura K, Shindo N, Matsuzawa S, Colloid Polym. Sci., 259, 1143 (1981)

[6] Prokopova E, Stern P, Quadrat D, Colloid Polym. Sci., 263, 899 (1985)

[7] Lozinsky VI, Vainerman ES, Domotenko LV, Mamtsis AM, Titova EF, Belavtseva EM, Rogozhin SV, Colloid Polym. Sci., 264, 19 (1986)

[8] Yokoi H, Kawata S, Iwaizumi M, J. Am. Chem. Soc., 108, 3358 (1986)

[9] Stern P, Prokopova E, Quadrat O, Colloid Polym. Sci., 265, 234 (1987)

[10] Matsuzawa S, Ueberreiter K, Colloid Polym. Sci., 687, 490 (1973)

[11] Eagland D, Vercauteren FF, Scholte TG, Donners WAB, Lechner MD, Mattern R, Eur. Polym. J., 22, 351 (1986)

[12] Cha WI, Hyon SH, Ikada Y, Polym. Prepr., 38, 4406 (1989)

[13] Cebe P, Grubb D, J. Mater. Sci., 20, 4461 (1985)

[14] Japan Patent, 60-108, 711 (1985)

[15] Rogovia LZ, Slonimskii GL, Gembitskii LS, Serovia YA, Grigoreva VA, Guberkova YN, Polym. Sci. USSR, 15, 1411 (1973)

[16] Han CD, Jhon MS, J. Appl. Polym. Sci., 32, 3809 (1986)

[17] Lyoo WS, Kim BC, Ha WS, Polym. Eng. Sci., 37(7), 1259 (1997)

[18] Han CD, Kim JK, Polymer, 34, 2533 (1993)