抄録
Fibril diameters of cross fiber chrysotile asbestos from different localities with sufficient strength for practical purposes were measured, and the correlation of fibril diameters and softness of fibers was discussed. Some morphological observations were made also.
The outside fibril diameters of majority of samples were between 330Åand 350Åwith a mean diameter of 337Å, and those of with rather special properties were less than 300Å. The inside diameters of all the samples were between 50Åand 70Åwith a mean diameter of 56Å.
It was concluded that there is no correlation between fibril diameters and softness of fibers, although it seemed there is some.
Comparison between the surface area calculated from fibril diameter and the BET surface area of defibrillated fiber suggested that the internal surface of fibril has no contribution to the BET surface area, and it was inferred from the fact mentioned above that the fibrils were filled with intrafibriller materials.
Some samples shows difficulty for perfect defibrillation as compared with the others, which might be caused that the bonding strength between fibrils for these samples is partially strong.
