Rational design of tetrahydrogeraniol-based hydrophobically modified poly(acrylic acid) as emulsifier of terpene-in-water transparent nanoemulsions
| Autor: | Carlos Larraya, Maud Save, Jean-François Tranchant, Leonard Ionut Atanase |
|---|---|
| Přispěvatelé: | Département Innovation Matériaux et Technologies, LVMH Moët Hennessy Louis Vuitton, Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux (IPREM), Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Aquitaine Science Transfert for funding PAATER project. Dérivés Résiniques Terpéniques (DRT Company), ANR-10-EQPX-0016,XYLOFOREST,Plateforme d'Innovation ' Forêt-Bois-Fibre-Biomasse du Futur '(2010) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Renewable resources
Materials science Polymers and Plastics General Physics and Astronomy 02 engineering and technology Degree of polymerization 010402 general chemistry 01 natural sciences chemistry.chemical_compound Dynamic light scattering Nanoemulsion Polymer chemistry Materials Chemistry Copolymer [CHIM]Chemical Sciences Static light scattering Reversible addition−fragmentation chain-transfer polymerization Acrylic acid Amphiphilic copolymers Molar mass RAFT polymerization Terpenes Organic Chemistry 021001 nanoscience & nanotechnology 6. Clean water 0104 chemical sciences Polymerization chemistry 0210 nano-technology |
| Zdroj: | European Polymer Journal European Polymer Journal, Elsevier, 2017, 94, pp.248-258. ⟨10.1016/j.eurpolymj.2017.07.011⟩ |
| ISSN: | 0014-3057 1873-1945 |
| DOI: | 10.1016/j.eurpolymj.2017.07.011⟩ |
| Popis: | Amphiphilic copolymers based on renewable resources were involved as emulsifiers to prepare transparent terpene-in-water nanoemulsions. The amphiphilic copolymers are composed of hydrophobically modified poly(acrylic acid) (HMPAA) grafted with different fractions of hydrophobic bio-based tetrahydrogeraniol (THG) side chains. The well-defined PAA were synthesized by reversible addition fragmentation transfer (RAFT) polymerization in order to tune the number-average molar mass of the initial PAA. The self-assembly in aqueous solution of the HMPAA copolymers was investigated through the measurement of their critical aggregation concentration by viscometry, tensiometry, dynamic light scattering and the determination of their aggregation number by static light scattering. Series of oil-in-water nanoemulsions using dihydromyrcenol (DHM) terpene as dispersed phase and PAA-THG as emulsifier were prepared with different PAA-THG/DHM weight ratios and DHM/water weight ratios. The level of transparency of the emulsions was monitored though the transmittance value measured at 600 nm and the measurements of the hydrodynamic diameter of droplets by dynamic light scattering. This study highlights that the structure of the PAAx-THGy is a key parameter to prepare terpene-in-water nanoemulsions with the required high level of transparency. The optimised structure of the emulsifier consists in a moderate degree of polymerization of PAA backbone ( DP ‾ n ,PAA ≤ 180 ) along with an intermediate average degree of substitution in hydrophobic THG side chains (13 ≤ DS ‾ ≤ 32). |
| Databáze: | OpenAIRE |
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