TY - JOUR
T1 - Initial flow of tissue conditioners — influence of composition and structure on gelation
AU - MURATA, H.
AU - IWANAGA, H.
AU - SHIGETO, N.
AU - HAMADA, T.
PY - 1993/3
Y1 - 1993/3
N2 - The effects of the molecular weight of polymer powders, the ethyl alcohol content of the liquids, the type of plasticizer and the polymer powder/liquid ratio on viscoelastic properties during gelation of tissue conditioners were studied with an oscillating rheometer. The results showed that: The gelation time decreased exponentially with increases in molecular weight of the polymer powder and with powder/liquid ratio. There were linear relationships between the log of gelation time, and both the molecular weight of the polymer powder and the powder/liquid ratio. In general, gelation time decreased exponentially with increases in ethyl alcohol content. However, the relationship between the log of the gelation time and ethyl alcohol content fitted a second‐order polynomial. The type of plasticizer affected gelation time. The order of gelation times was: benzyl benzoate < dibutyl phthalate < butyl phthalyl butyl glycolate. The initial flow of tissue conditioners could be controlled over a wide range by varying the molecular weight of the polymer powders, the ethyl alcohol content, the powder/liquid ratio and the type of plasticizer.
AB - The effects of the molecular weight of polymer powders, the ethyl alcohol content of the liquids, the type of plasticizer and the polymer powder/liquid ratio on viscoelastic properties during gelation of tissue conditioners were studied with an oscillating rheometer. The results showed that: The gelation time decreased exponentially with increases in molecular weight of the polymer powder and with powder/liquid ratio. There were linear relationships between the log of gelation time, and both the molecular weight of the polymer powder and the powder/liquid ratio. In general, gelation time decreased exponentially with increases in ethyl alcohol content. However, the relationship between the log of the gelation time and ethyl alcohol content fitted a second‐order polynomial. The type of plasticizer affected gelation time. The order of gelation times was: benzyl benzoate < dibutyl phthalate < butyl phthalyl butyl glycolate. The initial flow of tissue conditioners could be controlled over a wide range by varying the molecular weight of the polymer powders, the ethyl alcohol content, the powder/liquid ratio and the type of plasticizer.
UR - http://www.scopus.com/inward/record.url?scp=0027568338&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0027568338&partnerID=8YFLogxK
U2 - 10.1111/j.1365-2842.1993.tb01600.x
DO - 10.1111/j.1365-2842.1993.tb01600.x
M3 - Article
C2 - 8468628
AN - SCOPUS:0027568338
VL - 20
SP - 177
EP - 187
JO - Journal of Oral Rehabilitation
JF - Journal of Oral Rehabilitation
SN - 0305-182X
IS - 2
ER -