January 1980
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16 Reads
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22 Citations
Journal of the Society of Cosmetic Chemists
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Publications (3)
January 1978
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19 Reads
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17 Citations
Journal of the Society of Cosmetic Chemists
January 1978
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125 Reads
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27 Citations
Journal of the Society of Cosmetic Chemists
Synopsis The STIFFNESS of COMPONENT FIBERS is known to be important to the behavior of a fiber mass, but measurements are lacking in the cosmetic literature probably because of experimental difficulties with published methods. Recognizing this, we devised a simple method to compare fibers for stiffness. A fiber with a small weight on each end is draped over a wire and the distance ("D") between the vertical legs is measured. Fibers with a wide range of thicknesses clearly showed that values of"D" relate linearly to cross-sectional areas, as expected of "stiffness." This prompted a theoretical study which yielded equations in terms of"D" for calculating, e.g., elastic bending moduli and shapes of hanging fibers. Empirical and theoretical guides are given for selection of wire diameter and fiber weights. The average elastic modulus for bending fibers, assumed round in cross section, is approximately equal to that for stretch-ing the same fibers. Fiber stiffness is affected by humidity and chemical treatments but is relatively unaf-fected by shampoos.
Citations (3)
... The frictional properties of hair have been evaluated using a variety of methods. Scott and Robbins measured the friction between hair fibers and between hair fibers and a glass probe using the Capstan method 23 . The combing evaluation method, which measures the force between the hair and comb when the strain gauge and comb are pulled up, was widely used because of its high sensitivity and reproducibility 24 27 . ...
- Citing Article
January 1980
Journal of the Society of Cosmetic Chemists
... This study follows a mixed method design with two iterative stages. In the first stage, the qualitative data collection followed the Subjective Evidence-Based Ethnography (SEBE) methodology [21]. The theoretical underpinning and process of SEBE were outlined in detail in the preceding paper. ...
- Citing Article
January 1978
Journal of the Society of Cosmetic Chemists
... INTRODUCTION Wool 1-3 and human hair [4][5][6] are important fibrous keratinous materials that have been widely studied due to their superior mechanical strength and importance in the textile (wool) and hair care industries 7,8 and keratin-based biomaterials fields. In the early 1900s, a patent 9 described a process for extracting keratins from animal horns using lime. ...
Reference:
On the Strength of Hair across Species
- Citing Article
January 1978
Journal of the Society of Cosmetic Chemists