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Horseradish peroxidase-mediated polyethylene glycol-templated polymerisation of gallic acid and pyrrole to improve the functionalisation and dyeing properties of silk fabrics / Na-won Baek in COLORATION TECHNOLOGY, Vol. 139, N° 1 (02/2023)
[article]
Titre : Horseradish peroxidase-mediated polyethylene glycol-templated polymerisation of gallic acid and pyrrole to improve the functionalisation and dyeing properties of silk fabrics Type de document : texte imprimé Auteurs : Na-won Baek, Auteur ; Dan Wang, Auteur ; Xun Zhang, Auteur ; Jie Wang, Auteur ; Xue-rong Fan, Auteur Année de publication : 2023 Article en page(s) : p. 45-56 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Polyéthylène glycol
Polymérisation
Polymérisation enzymatique
Polyphénols
Polypyrroles
Soie et constituants
Solidité de la couleur
Teinture -- Fibres textilesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Silk fabrics treated with gallic acid/pyrrole (PGA/PPy) complexes polymerised using horseradish peroxidase have higher electrochemical activity than silk fabrics dyed with gallic acid alone. However, the degree of polymerisation decreases. As a result, the ultraviolet (UV) protection and fastness of the silk fabric were lowered. To solve this problem, we studied the degree of polymerisation of the complex and the functionality of dyed silk fabrics by applying a polyethylene glycol (PEG) template to the enzymatic polymerisation of PGA/PPy. The polymerisation mechanism of the complexes was analysed in detail using UV-visible spectroscopy, Fourier-transform infrared (FTIR) spectroscopy, and high-performance liquid chromatography electrospray ionisation mass spectrometry (HPLC-ESI-MS). Consequently, the PGA/PPy/PEG complex has a higher degree of polymerisation than the PGA/PPy prepared without PEG, indicating that the PEG template can promote the polymerisation of PGA and PPy. As a result, we found that the presence of the PEG template improved the thermal stability and UV protection function of the dyed silk fabric, but did not impair the electrochemical activity of silk fabric. As a result of analysing the colour depth, it exhibited a higher K/S value compared to the dyed silk fabric in the absence of PEG. Additionally, its colour fastness was improved. Note de contenu : - MATERIALS AND METHODS : Reagents and materials - Enzymatic oxidative polymerisation of gallic acid - Dyeing process of silk fabrics - Characterisation of polymers - Characterisation of silk fabrics
- RESULTS AND DISCUSSION : Characterisation of PGA, PFA and the PGA/PPy, PFA/PPy complexes - Properties of functionalised silk fabrics -
- Table 1 : Possible mass-to-charge (m/z) assignments for PGA, PGA/PPy and PGA/PPy/PEG
- Table 2 : Anti-ultraviolet (UV) activity of the treated silk fabrics
- Table 3 : CIELab values obtained for the dyed silk samples
- Table 4 : The colour fastness of the dyed silk fabricDOI : https://doi.org/10.1111/cote.12634 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12634 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39204
in COLORATION TECHNOLOGY > Vol. 139, N° 1 (02/2023) . - p. 45-56[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24084 - Périodique Bibliothèque principale Documentaires Disponible Radial structure of commercial styrene-co-butyl acrylate latex particles by means of synchrotron small-angle X-ray scattering under contrast-variation conditions / Xuelian Chen in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 4 (07/2011)
[article]
Titre : Radial structure of commercial styrene-co-butyl acrylate latex particles by means of synchrotron small-angle X-ray scattering under contrast-variation conditions Type de document : texte imprimé Auteurs : Xuelian Chen, Auteur ; Jianqi Zhang, Auteur ; Zhiyong Yi, Auteur ; Qiao Wang, Auteur ; Xiuhong Li, Auteur ; Fenggang Bian, Auteur ; Jie Wang, Auteur ; Yongfeng Men, Auteur Année de publication : 2011 Article en page(s) : p. 489-496 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Copolymère styrène acrylate de butyle
Core-Shell
Diffusion aux petits angles
Latex
Rayonnement synchrotronIndex. décimale : 667.9 Revêtements et enduits Résumé : Abstract The structural information of commercial styrene-co-butyl acrylate latex particles along radial direction was observed via the contrast-variation technique using synchrotron small-angle X-ray scattering (SAXS). By manipulating the electron density of the dispersion medium, the microstructural parameters of the latex dispersion were evaluated based on quantitative discussion of the scattering intensity distribution profiles. Four isoscattering points could be identified in the contrast-variation measurements, located at the scattering vectors corresponding to the position of the sharp minima of the scattering curve of homogenous spheres. This suggests that the shape and structure of particles were not affected by adding a certain amount of sucrose and salt. This phenomenon was attributed to the existence of the thin surface layers around particle core in the system. The data indicate that the latex particles exhibit a core-shell structure, and the average thickness of the shell is about 2 nm. Note de contenu : - Latex dispersions containing added sodium chloride
- Latex dispersions containing added sucroseDOI : 10.1007/s11998-010-9314-x En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-010-9314-x.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12137
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 4 (07/2011) . - p. 489-496[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 013158 - Périodique Bibliothèque principale Documentaires Disponible