Liquid Viscosity Near Glass Transition Temperature:II. Contraction Function and Non-Andrade Viscosity Equation
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概要
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The Doolitte equation for liquid viscosity can be reduced to an Andrade type equation when the contraction function C (T) =0, whereas it becomes non-Andrade viscosity (glass viscosity) equation when C (T)>0. The function C (T) has a maximum value near the glass transition temperature T<SUB>g</SUB>, and decreases rapidly to zero at its both sides. At the temperature region near T<SUB>g</SUB>, the equation can be led by various approximations to Fox-Flory, WLF and Tobolsky- Catsiff types of viscosity equations. The two parameters in each equations are related each other and the Fox-Flory, WLF and Tobolsky-Catsiff equations are applicable in temperature ranges near, above and below T<SUB>g</SUB>, respectively.
- 公益社団法人 高分子学会の論文
公益社団法人 高分子学会 | 論文
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