Comparison of polyethylene glycol adsorption to nanocellulose versus fumed silica in water

Reid, Michael S.; Marway, Heera S.; Moran-Hidalgo, Camila; Villalobos, Marco; Cranston, Emily D.

doi:10.1007/s10570-017-1482-8

Cited by 24 publications

(34 citation statements)

References 97 publications

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“…Reid and coworkers addressed a conflicting trend in the literature that suggested that polyethylene glycol (PEG) adsorbed onto CNC surfaces, using QCM‐D . They prepared a thick CNC film on a QCM‐D sensor and flowed PEG solution at 100 µL min −1 until adsorption (rather deposition of PEG) reached equilibrium.…”

Section: Performance Assessment Of Flocculantsmentioning

confidence: 99%

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Water Soluble Polymer Flocculants: Synthesis, Characterization, and Performance Assessment

Vajihinejad

Gumfekar

Bazoubandi

et al. 2018

Macro Materials & Eng

137

108

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Water soluble polymer flocculants are important constituents of solid–liquid separation units for the treatment of a variety of process‐affected effluents. The systematic development of a flocculant relies on a good understanding of flocculation process, polymer synthesis, polymer characterization, and, not the least, flocculation performance assessment as desired for a particular treatment process, all of which are essential to establish meaningful relationships between flocculant microstructure and flocculation efficiency. The aim of this article is to communicate the bigger picture of this research area to the readers. The recent advances in the application of bio/natural, synthetic, and stimuli‐responsive flocculants are reviewed. Then, the basic polymer reaction engineering tools to control the microstructure of flocculants are provided and the techniques for the quantification of flocculant microstructure are concisely discussed. This is followed by a review of the methods used for the characterization of particle‐polymer force measurement, and flocculation/dewatering assessment with attention to the characterization of aggregate structures.

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Section: Performance Assessment Of Flocculantsmentioning

confidence: 99%

Section: Performance Assessment Of Flocculantsmentioning

confidence: 99%

Water Soluble Polymer Flocculants: Synthesis, Characterization, and Performance Assessment

Vajihinejad

Gumfekar

Bazoubandi

et al. 2018

Macro Materials & Eng

137

108

View full text Add to dashboard Cite

show abstract

“…Previous studies reported in the literature seem to indicate that there is no interaction between PEG and cellulose in an aqueous state, although PEG has been found to associate with cellulose through hydrogen bonding if no water is present [30]. The determined interaction in the current study might thus indicate that an association between PEG and cellulose is also possible in an aqueous state, although the association is very weak, which suggests that considerably less hydrogen bonding occurs between PEG molecules and cellulose than in the dry state.…”

Section: Pegmentioning

confidence: 92%

Revisiting the Dissolution of Cellulose in NaOH as “Seen” by X-rays

et al. 2020

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Cotton production is reaching a global limit, leading to a growing demand for bio-based textile fibers produced by other means. Textile fibers based on regenerated cellulose from wood holds great potential, but in order to produce fibers, the components need to be dissolved in suitable solvents. Furthermore, the dissolution process of cellulose is not yet fully understood. In this study, we investigated the dissolution state of microcrystalline cellulose in aqueous NaOH by using primarily scattering methods. Contrary to previous findings, this study indicated that cellulose concentrations of up to 2 wt % are completely molecularly dissolved in 8 wt % NaOH. Scattering data furthermore revealed the presence of semi-flexible cylinders with stiff segments. In order to improve the dissolution capability of NaOH, the effects of different additives have been of interest. In this study, scattering data indicated that the addition of ZnO decreased the formation of aggregates, while the addition of PEG did not improve the dissolution properties significantly, although preliminary NMR data did suggest a weak attraction between PEG and cellulose. Overall, this study sheds further light on the dissolution of cellulose in NaOH and highlights the use of scattering methods to assess solvent quality.

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“…For both types of emulsions, a layer of CNCs was observed at the interface but for PEO droplets in dextran, the CNCs formed a gel network in the dextran phase which further prevented coalescence of the droplets. [160] It is likely important that both polymers do not adsorb to CNCs [235,236] and if strong interactions between the polymers and the CNCs were present, interfacial stabilization would be precluded. A subsequent study with the PEO-dextran system showed that the aggregation rate of CNCs could be controlled by adding increasing amounts of NaCl (between 10 × 10 −3 and 100 × 10 −3 m).…”

Section: Unmodified Cncsmentioning

confidence: 99%

Nanocellulose in Emulsions and Heterogeneous Water‐Based Polymer Systems: A Review

et al. 2020

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Comparison of polyethylene glycol adsorption to nanocellulose versus fumed silica in water

Cited by 24 publications

References 97 publications

Water Soluble Polymer Flocculants: Synthesis, Characterization, and Performance Assessment

Water Soluble Polymer Flocculants: Synthesis, Characterization, and Performance Assessment

Revisiting the Dissolution of Cellulose in NaOH as “Seen” by X-rays

Nanocellulose in Emulsions and Heterogeneous Water‐Based Polymer Systems: A Review

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