The Relationship between Moisture Content of Human Fingernails and the Mechanical Properties of the Fingernail. Part 3.
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概要
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It is well known that nail damages such as yellowing, split nails and peeled nails (onychoschisis) is caused by continuous use of nail enamel for a long period. Within serious nail damages, we aimed at split nails and peeled nails and basically investigated the effect of organic solvents on fingernail moisture content and the mechanical properties to make clear the factors affecting those nail damages. As a result, the change in fingernail volume of fingernail dipped in water was much more considerable than that dipped in organic solvents. It is suggested that the fingernails dipped in organic solvents is harder and brittler than the fingernails dipped in water from the result of E′ and tanδ of the fingernails dipped in water and organic solvents. Moreover we proposed the mechanism of the split nails caused by organic solvents.
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