Vinyltriethoxysilane-functionalized starch nanocrystals as Pickering stabilizer in emulsion polymerization of acrylic monomers. Application in nanocomposites and pressure-sensitive adhesives - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Journal of Colloid and Interface Science Année : 2020

Vinyltriethoxysilane-functionalized starch nanocrystals as Pickering stabilizer in emulsion polymerization of acrylic monomers. Application in nanocomposites and pressure-sensitive adhesives

Résumé

Emulsion polymerization provides a sustainable way to produce latex polymers for coatings and adhesives thanks to the use of water as a dispersion medium. This synthesis approach can be even more attractive if synthetic surfactant can be replaced by biobased solid particles as a stabilizer, through what is known as a "Pickering effect". Herein, latex dispersions with solid content up to 35 wt% were successfully produced by emulsion polymerization using starch nanocrystals (SNCs) as a sole stabilizer and H2O2/citric acid as a redox-initiator. The effect of the SNC modification with vinyltriethoxysilane (VTES) on the colloidal properties of the polymer dispersion and performance of the resulting nanocomposite film were investigated. As an application of this approach, pressure-sensitive adhesive (PSA) dispersions have been prepared via Pickering emulsion polymerization in the presence of 8 wt% SNCs. The use of VTES-SNCs has a beneficial impact on the performance of PSAs with improved peel strength and wettability. The possibility to use SNCs as a stabilizer to replace synthetic surfactants in emulsion polymerization opens new avenues for the application of SNCs as biobased Pickering stabilizers to produce latex for coatings, adhesives, inks, and textiles.
Fichier principal
Vignette du fichier
BenAyed_preprint_2020.pdf (4.14 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-02897088 , version 1 (29-05-2021)

Identifiants

Citer

Emna Ben Ayed, Albert Magnin, Jean-Luc Putaux, Sami Boufi. Vinyltriethoxysilane-functionalized starch nanocrystals as Pickering stabilizer in emulsion polymerization of acrylic monomers. Application in nanocomposites and pressure-sensitive adhesives. Journal of Colloid and Interface Science, 2020, 578, pp.533-546. ⟨10.1016/j.jcis.2020.05.011⟩. ⟨hal-02897088⟩
54 Consultations
168 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More