The minimum explosive concentration and ignition energy of several kinds of cellulose derivatives-methylcellulose, hydroxypropyl methylcellulose, low-substituted hydroxypropylcellulose, hydroxypropyl methylcellulose phthalate and hydroxypropyl methylcellulose acetate succinate-were measured to evaluate their potential for dust explosion.
It was found that the explosibility of cellulose derivatives increased with a decreasing average particle size or bulk density and an increase in the amount of fibrous particles. These factors were expressed in a specific surface area. Moreover, the dust explosibility increased with a higher total molecular of substitution in the cellulose unit. However, it was hardly affected by the kind of substituents nor the average molecular weight of the cellulose derivatives.
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