Controllable Crimpness of Animal Hairs via Water-Stimulated Shape Fixation for Regulation of Thermal Insulation

Animals living in extremely cold plateau areas have shown amazing ability to maintain their bodies warmth, a benefit of their hair's unique structures and crimps. Investigation of hair crimps using a water-stimulated shape fixation effect would control the hair's crimpness with a specific...

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Published inPolymers Vol. 11; no. 1; p. 172
Main Authors Xiao, Xueliang, Gu, Yanjia, Wu, Guanzheng, Zhang, Diantang, Ke, Huizhen
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 18.01.2019
MDPI
Subjects
animal hairs
crimpness
Fixation
Folding
Fourier transforms
Hair
Hydrogen bonds
Infrared radiation
Insulation
Macromolecules
Retention
Shape effects
Spectrum analysis
Stability
temporary shape fixation
Textiles
Thermal insulation
Wetting
Wool
Japan
animal hairs
thermal insulation
temporary shape fixation
crimpness
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Summary:Animals living in extremely cold plateau areas have shown amazing ability to maintain their bodies warmth, a benefit of their hair's unique structures and crimps. Investigation of hair crimps using a water-stimulated shape fixation effect would control the hair's crimpness with a specific wetting-drying process thereafter, in order to achieve the regulation of hair thermal insulation. The mechanism of hair's temporary shape fixation was revealed through FTIR and XRD characterizations for switching on and off the hydrogen bonds between macromolecules via penetration into and removal of aqueous molecules. The thermal insulation of hairs was regulated by managing the hair temporary crimps, that is, through managing the multiple reflectance of infrared light by hair hierarchical crimps from hair root to head.
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These authors contributed equally to this work.
ISSN:2073-4360
2073-4360
DOI:10.3390/polym11010172