| Titre : |
Structure of vinyl polysiloxane on properties of polyacrylates filmm and its pigment printing application |
| Type de document : |
texte imprimé |
| Auteurs : |
Qipeng Zhang, Auteur ; Minghua Wu, Auteur |
| Année de publication : |
2020 |
| Article en page(s) : |
p. 937-948 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Angle de contact
Caractérisation
Copolymères -- Synthèse
Copolymères greffés
Couches minces -- Propriétés mécaniques
Energie de surface
Impression pigmentaire
Impression sur étoffes
Latex
Liants
Mesure
Poids moléculaires
Polyacrylates
Polymérisation en émulsion
Polyméthylvinylsiloxane
Séparation (technologie)
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Polysiloxane is a promising modified material due to its good hydrophobicity and toughness, but it suffers from serious uneven distribution and migration during film formation process which gradually lead to the destruction of the hydrophobic structure. A novel silicon-modified copolymer with different molecular weight and vinyl content was synthesized to overcome this problem: an appropriate amount of double bonds between the polysiloxane backbone ensures uniform distribution. Moreover, a multicrosslinked network binder was prepared by miniemulsion polymerization of the polyacrylate copolymers and polysiloxane. Unlike the common crosslinked network of an uneven distribution and migration of silicone backbone, the polysiloxane with suitable crosslinking degree and molecular weight could be effectively distributed evenly during the film formation process. As a result, a better hydrophobicity and toughness performance (89.7° ± 0.5°, 2500% elongation at break) was achieved with this novel poly(methylvinylsiloxane) with 11,024 g/mol at 0.804 mmol/g vinyl content. The product was applied to pigment printing with better wet rubbing fastness and soft handle compared with the unmodified polyacrylates binder. The DSC, SAXS, and XPS indicated that high molecular organosilicon chain and moderate vinyl content were prone to phase separation and obviously shifted onto the surface of film, enriching a uniform organosilicon layer, which played a vital role in the surface hydrophobicity and mechanical properties. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Synthesis of poly(methylvinylsiloxane - Polymerization - Pigment printing - Measurements
- RESULTS AND DISCUSSION : Synthesis and structure of poly(methylvinylsiloxane) - Characterization of different latexes - Characterization of modified polyacrylate films - Degree of grafting of Vi-PDMS to polyacrylates - Microphase separation - Surface composition - Contact angles and surface energy - Mechanical properties of the films - Textile pigment printing applications |
| DOI : |
https://doi.org/10.1007/s11998-020-00320-9 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007/s11998-020-00320-9.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34382 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 17, N° 4 (07/2020) . - p. 937-948
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Structure of vinyl polysiloxane on properties of polyacrylates filmm and its pigment printing application in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 4 (07/2020)
