錠剤の成型および崩壊機構の研究 (第7報)

珪酸アルミニウム錠の微細毛管構造

抄録

Adsorption of water vapor on compressed aluminum silicate was examined and tests were made to draw scanning adsorption isotherme inside the large hysteresis loop formed by adsorption and desorption isotherms. Continuous curve were successfully obtained with samples compressed at 0.76 and 1.5ton/cm² and, therefore, calculations were made by the methods of Katz and Utsugi on the distribution of neck-radius and the volume of internal wide space which belongs to bottleneck type capillary. Results of calculations are presented in Tables I and II. data These shows that the capillary with narrow neck and the large internal volume has developed markedly.