Perm-waved human hair: a thermorheologically complex shape memory composite

Autor: Gabriele Wortmann, Franz Wortmann, Celina Jones, Thomas J. Davies

Publikováno v: Wortmann, F J, Jones, C, Davies, T J & Wortmann, G 2021, ' Perm-waved human hair: A thermo-rheologically complex, shape-memory composite ', Biophysical Journal, vol. 120, no. 17, pp. 3831-3840 . https://doi.org/10.1016/j.bpj.2021.03.044
Biophys J

A “permanent” bent shape can be imposed on a straight human hair by a two-stage reduction/oxidation (perm-waving) process. The process relies on the molecular level on sulfhydryl/disulfide interchange as bond exchange reaction (BER). We expected

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4525e626398ceb91a4c1ed358d39a93e
https://doi.org/10.1016/j.bpj.2021.03.044

Linear and nonlinear relations between DSC parameters and elastic moduli for chemically and thermally treated human hair

Autor: Crisan Popescu, Gabriele Wortmann, Franz Wortmann

Publikováno v: Wortmann, F J, Wortmann, G & Popescu, C 2019, ' Linear and nonlinear relations between DSC parameters and elastic moduli for chemically and thermally treated human hair. ', Journal of Thermal Analysis and Calorimetry . https://doi.org/10.1007/s10973-019-08252-2

Against the practical context of thermal straightening, hair samples were obtained with a chemical (bleaching) as well as a cumulative thermal history (0 - 800 s, 200 oC). On these samples tensile testing as well as DSC-analysis, both in the wet stat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b837715408dfcb130e7a3884a305043
https://doi.org/10.1007/s10973-019-08252-2

Why is hair curly?-Deductions from the structure and the biomechanics of the mature hair shaft

Autor: Therakanya Sripho, Gabriele Wortmann, Franz Wortmann

Publikováno v: Wortmann, F J, Wortmann, G & Sripho, T 2019, ' Why is hair curly? Deductions from the structure and the biomechanics of the mature hair shaft ', Experimental Dermatology, vol. 29, no. 3, pp. 366-372 . https://doi.org/10.1111/exd.14048

The final shape of a head hair is predetermined through a variety of factors during its formation in the follicle. These are genetic pathways, specific growth factors, cell differentiation and segregation, etc, with spatial as well as chronological d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0c587b1c1300ccbe8d81db42b46f2b0
https://pubmed.ncbi.nlm.nih.gov/31609023

The effects of esterification on the humidity-dependent glass transition of human hair

Autor: Prem Paul, Ian Jinks, Franz Wortmann

Publikováno v: Thermochimica Acta. 614:33-36

Human hair is a highly complex biomaterial. For the analysis of its mechanical and thermal properties it is, however, well described by a two-phase structure, which contains as morphological components the highly-ordered, crystalline intermediate fil

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a1dddc209f3cd1deccde39e1a366e598
https://doi.org/10.1016/j.tca.2015.06.002

A morphological interpretation of water chemical exchange and mobility in cellulose materials derived from proton NMR T2 relaxation

Autor: Roger Ibbett, Franz Wortmann, Ksenija Varga, K. Christian Schuster

Publikováno v: Cellulose. 21:139-152

Proton T2 relaxation times of water in cellulosic fibres have been interpreted using a 3-term average model. Motional and chemical exchange contributions to relaxation show opposing temperature behaviour, enabling the use of Arrhenius analysis to det

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b022ef947b63b94e1419504c3a41cd1a
https://doi.org/10.1007/s10570-013-0106-1