자외선 파장에 따른 모발의 인장특성
Mechanical Properties of Human Hair Shaft by UV Wavelength
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초록
The destruction of an ozone layer caused by environmental pollution brings about the increase of ultraviolet rays. It has a bad influence on organism and can lead to hair damage, which is a biological structure, by repeated treatment. Hair damage mainly occurs in 250 nm~400 nm. In order to examine mechanical properties associated with UV wavelength, tensile strength and elongation was investigatied. Effects of UV wavelength were studied by exposing hair sample to 360nm and 306 nm in ultraviolet irradation device to irradation time. As a result, for mechanical properties of hair, UV-A tended to decrease in tensile strength and elongation compared with UV-B. It was found that permanent wave-treated hair was damaged the most probably because of the synergistic effect of UV and cosmetic treatment. Based on this result, common people and cosmetic professionals should recognize and manage photo-damage to maintain and manage healthy hair.
Abstract
The destruction of an ozone layer caused by environmental pollution brings about the increase of ultraviolet rays. It has a bad influence on organism and can lead to hair damage, which is a biological structure, by repeated treatment. Hair damage mainly occurs in 250 nm~400 nm. In order to examine mechanical properties associated with UV wavelength, tensile strength and elongation was investigatied. Effects of UV wavelength were studied by exposing hair sample to 360nm and 306 nm in ultraviolet irradation device to irradation time. As a result, for mechanical properties of hair, UV-A tended to decrease in tensile strength and elongation compared with UV-B. It was found that permanent wave-treated hair was damaged the most probably because of the synergistic effect of UV and cosmetic treatment. Based on this result, common people and cosmetic professionals should recognize and manage photo-damage to maintain and manage healthy hair.
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