To clarify elastic characteristics of disperse systems of tobacco powder and water, the complex dynamic shear modulus γ
* and the complex dynamic tensile modulus E
* are measured by the forced vibration method, and the effects of porosity and additives on these moduli are examined. The following results have been obtained; the values of |E
*| are about 4 times of these of |γ
*| for the samples having the same stress history, and the effects of sample shape on these moduli are negligible. The effects of porosity on |E
*| is not explained by the effective area of tobacco powder and water in the cut section of sample. To increase E*, carboxymethyl cellulose (CMC) as a binder, pulp as a reinforcement material are used. |E
*| is not affected by the addition of CMC at concentration of 0.9~4%, but is affected remarkably by the addition of pulp. |E
*| increases with increase in pulp content. Filling value is highly correlated with |E
*|, and increases with E
* of the system. It is clarified that the addition of pulp is effective to improve the filling value of the reconstituted tobacco.
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