Initial flow of tissue conditioners — influence of composition and structure on gelation

H. MURATA, H. IWANAGA, N. SHIGETO, T. HAMADA

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)177-187
Number of pages11
JournalJournal of oral rehabilitation
Volume20
Issue number2
DOIs
Publication statusPublished - 1993 Mar

ASJC Scopus subject areas

  • Dentistry(all)

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