Hydrophobization and smoothing of cellulose nanofibril films by cellulose ester coatings
| Autor: | Jarmo Ropponen, Jari Vartiainen, Jani Pelto, Pia Willberg-Keyriläinen |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
mulktilayer films
Materials science Polymers and Plastics Nanofibers 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences Nanocellulose chemistry.chemical_compound Coating Materials Chemistry Side chain Composite material Cellulose Porosity ta216 ta116 long chain cellulose esters Molar mass Organic Chemistry cellulose nanofibrils Esters 021001 nanoscience & nanotechnology 0104 chemical sciences Molecular Weight chemistry Oxygen barrier Printed electronics CNF engineering barrier 0210 nano-technology Hydrophobic and Hydrophilic Interactions |
| Zdroj: | Willberg-Keyriläinen, P, Vartiainen, J, Pelto, J & Ropponen, J 2017, ' Hydrophobization and smoothing of cellulose nanofibril films by cellulose ester coatings ', Carbohydrate Polymers, vol. 170, pp. 160-165 . https://doi.org/10.1016/j.carbpol.2017.04.082 |
| ISSN: | 1879-1344 0144-8617 |
| Popis: | The Cellulose nanofibrils (CNF), also referred to as nanocellulose, is one of the most studied bio-based material in recent year, which has good potential in the future for packaging applications due to its excellent mechanical strength and oxygen barrier properties. In the future, CNF films may also find new applications for example in printed electronics, if the surface smoothness of CNF films can be improved. One way to improve surface smoothness is to use thin coating solutions with zero porosity, such as molar mass controlled cellulose ester coatings. In this study, we have coated CNF films using molar mass controlled cellulose esters with different side chain lengths forming 3-layer film (ester-CNF-ester). These coatings improved significantly the smoothness of CNF films. The 3-layer films have also good water vapor barrier and mechanical properties and the films are heat-sealable, which enable various new applications in the future. |
| Databáze: | OpenAIRE |
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