Comparison of polyethylene glycol adsorption to nanocellulose versus fumed silica in water
| العنوان: | Comparison of polyethylene glycol adsorption to nanocellulose versus fumed silica in water |
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| المؤلفون: | Camila Moran-Hidalgo, Michael S. Reid, Marco A. Villalobos, Emily D. Cranston, Heera S. Marway |
| المصدر: | Cellulose. 24:4743-4757 |
| بيانات النشر: | Springer Science and Business Media LLC, 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | chemistry.chemical_classification, Materials science, Polymers and Plastics, technology, industry, and agriculture, 02 engineering and technology, Polymer, Polyethylene glycol, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, Nanocellulose, chemistry.chemical_compound, Adsorption, chemistry, Dynamic light scattering, PEG ratio, Polymer chemistry, Cellulose, 0210 nano-technology, Fumed silica |
| الوصف: | The recent intensification of industrially produced cellulose nanocrystals (CNCs) and cellulose nanofibrils has positioned nanocelluloses as promising materials for many water-based products and applications. However, for nanocelluloses to move beyond solely an academic interest, a thorough understanding of their interaction with water-soluble polymers is needed. In this work, we address a conflicting trend in literature that suggests polyethylene glycol (PEG) adsorbs to CNC surfaces by comparing the adsorption behaviour of PEG with CNCs versus fumed silica. While PEG is known to have strong hydrogen bonding tendencies and holds water tightly, it is sometimes (we believe erroneously) presumed that PEG binds to cellulose through hydrogen bonding in aqueous media. To test this assumption, the adsorption of PEG to CNCs and fumed silica (both in the form of particle films and in aqueous dispersions) was examined using quartz crystal microbalance with dissipation, isothermal titration calorimetry, rheology and dynamic light scattering. For all PEG molecular weights (300–10,000 g/mol) and concentrations (100–10,000 ppm) tested, strong rapid adsorption was found with fumed silica, whereas no adsorption to CNCs was observed. We conclude that unlike silanols, the hydroxyl groups on the surface of CNCs do not readily hydrogen bond with the ether oxygen in the PEG backbone. As such, this work along with previous papermaking literature supports the opinion that PEG does not adsorb to cellulose surfaces. |
| تدمد: | 1572-882X 0969-0239 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::6f12641b3c9e375309e91bcb8ffabf45 https://doi.org/10.1007/s10570-017-1482-8 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........6f12641b3c9e375309e91bcb8ffabf45 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 1572882X 09690239 |
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