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| Type |
Poster Presentation |
| Area |
Polymer Chemistry |
| Room No. |
Exhibition Hall 2 |
| Time |
4월 19일 (금요일) 11:00~12:30 |
| Code |
POLY.P-8 |
| Subject |
Visualization of Human Hairs; FT-IR and Confocal Microscopic Studies. |
| Authors |
Daeyeon Cho, Soo Ryeon Ryu1, Kwanwoo Shin*
Department of Chemistry, Sogang University, Korea
1Department of Chemistry, Biological Interface Labo, Korea
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| Abstract |
Hair is a protein filament that grows from follicles found in the dermis. Hair is one of the defining characteristics of mammals. We know well about structural information about human hair, but very few parts of physical properties of human hair, such as diffusivity, acidic resistance, etc., are known. Therefore, our ultimate-goal is to unveil secrets of human hair using analytical instruments, especially by FT-IR micro-spectrophotometer and confocal laser scanning microscopy.
FT-IR microscopy can combine visual microscopic hair fiber analysis with valuable and discriminating infrared chemical information. It is also a useful method for the analysis of human hair because it can be used to analyze both the cortex and the cuticle of cross-sectioned hair. Transformations due to the breakage of bonds in specific chemical groups were observed and spatially characterized. Hair fiber chemical information can reveal residual hair styling products, such as hairspray and conditioner, and protein structure changes due to chemical treatments, like bleaching.
Confocal microscopy is an excellent method for studying the localization of fluorescent stains. Used in this way, superior 3D images can be obtained from multiple optical sections with very shallow depth of field. Confocal microscopy requires only minimal sampling preparation, and the hair can be observed in its natural environment with less damage than by other microscopic methods such as SEM. This relatively noninvasive, nondestructive technique is routinely used by us to monitor the efficiency of cleansing shampoos, to assess the homogeneity of layering polymers, and to evaluate the changes they induce in the optical properties of the hair surface in terms of opacity, transparency, and brilliancy.
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| E-mail |
wheodus20022@naver.com |
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123rd General Meeting of the KCS