Published June 16, 2023
| Version v1
Poster
Open
Investigation of cellulose phosphorylation using a design of experiment approach for transparent and flame-retardant nanocellulose materials
Authors/Creators
- 1. Fedrigoni
- 2. Laboratoire de Génie des Procédés pour la Bioraffinerie, les Matériaux Bio-sourcés et l'Impression Fonctionnelle
Description
- MADRAS is a European consortium of 12 partners from 5 countries
- Aims to produce geolocalisation tags printed on bio-based flexible substrate exhibiting 90% transparency.
- Cellulose phosphorylation as a pretreatment to produce high quality cellulose nanomaterials.
- Simple process
- Upscallable
- High CNF properties
- Strong coloration change during the curing
- High grafting variations
- Phosphorylation is a 3-step process
- Impregnation of the substrate into a mixture of urea and phosphoric acid diluted into water
- Drying to remove most of the water
- Curing at high temperature where the grafting takes place
- 2 important steps: Impregnation & Curing
- Study of 3 parameters:
- Impregnation time 1-60s
- Curing time 5-35min
- Curing temperature 120-180°C
- Pretreated samples were mechanically fibrillated and transparent foils were produced by solvent casting.
Files
Tappi nano 2023 poster_v2.pdf
Files
(888.7 kB)
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