Effects of heat treatment on the mechanical properties of hair.
Int J Cosmet Sci
; 6(5): 213-29, 1984 Oct.
Article
de En
| MEDLINE
| ID: mdl-19467114
ABSTRACT
Synopsis A previous study having shown that there was no modification in superficial or deeper hair structure at temperatures below 100 degrees C, the influence of hair-drying conditions on mechanical properties has been examined. The hair speed and hair temperature given by different types of hair-drying equipment were considered and a novel method used each hair as its own control. Stress/strain curves were followed using an electrodynamometer and a range of hair types was considered normal, grey, denatured, and bleached, the definitions being given by both appearance and the stress/strain curve. In comparison with ultimate structure, mechanical properties were modified at a lower temperature. The stiffness of the hair starts to increase markedly already at 40 degrees C for a drying time of 2 to 3 minutes and this appears.
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Collection:
01-internacional
Base de données:
MEDLINE
Langue:
En
Journal:
Int J Cosmet Sci
Année:
1984
Type de document:
Article
Pays d'affiliation:
France