Study on the Morphological Change of Straight Permanent Waved Hair by Tensile Strength Test

인장강도 측정에 의한 스트레이트 펌 모발의 형태학적 변화에 관한 연구

  • Roh, Jung-Ae (Department of Biological Engineering Sciences, Konkuk University) ;
  • Chang, Byung-Soo (Department of Cosmetology, Hanseo University) ;
  • Choi, Tae-Bu (Department of Biological Engineering Sciences, Konkuk University)
  • 노정애 (건국대학교 일반대학원 미생물공학과) ;
  • 장병수 (한서대학교 보건학부 피부미용학과) ;
  • 최태부 (건국대학교 일반대학원 미생물공학과)
  • Published : 2009.03.31

Abstract

In this study, we investigated tensile properties and ultrastructural changes of straight permed hair using the rheometer and the scanning electron microscopy. First, we compared the morphological characteristic between the virgin hair and the straight permed hair after testing tensile strength. Cuticle cells were heavily lifted off in straight permed hair than in the virgin hair. Cuticle cells were separated by the destruction of intercellular membrane complex and no destruction or damage were found in cytoplasm. In the comparative test for tensile characteristic between the virgin hair and the straight permed hair, tensile distance of the straight permed hair was decreased by 24.5% or 3.05 mm than the virgin hair. The tensile strength was decreased by 34.63% or $5.62\;g/cm^2$ and the maximum stress by 34.59% or 56.12 g. As a result, the tensile property dropped to the lowest level with the straight permed hair than with the bleached hair or the permanent dyed hair of previous studies.

본 연구는 스트레이트 펌에 의해서 손상된 모발의 인장특성과 미세구조적 변화를 인장강도기와 주사전자현미경을 사용하여 관찰 분석하였다. 건강모발과 스트레이트 펌 모발의 인장강도를 측정한 후 형태적인 특징을 비교하였을 때 스트레이트 펌 모발에서 큐티클층의 큐티클세포들은 건강모발에 비하여 심하게 분리되어서 들떠있는 상태로 관찰되었다. 이들 세포들은 세포막사이 복합체의 파괴에 의해서 분리되었고 세포질의 파괴나 부서짐의 현상은 나타나지 않았다. 건강모발과 스트레이트 펌 모발의 인장특성에 관한 비교 실험에서 스트레이트 펌 모발의 인장거리는 건강모발에 비하여 24.5%가 감소되어 약 3.05 mm의 차이가 나타났고 인장강도는 34.63%가 감소되어 $5.62\;g/cm^2$가 작았다. 또한, 최고응력은 34.59%가 감소되어 56.12 g이 작은 것으로 나타났다. 결과적으로 스트레이트 펌 모발의 인장특성은 탈색모발과 염색모발의 선행 연구결과보다 가장 낮은 것으로 나타났다.

Keywords

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