Optimization of a Nanoparticle Suspension for Freeze Casting

Lu, Kathy; Kessler, Chris S.; Davis, R. F.

doi:10.1111/j.1551-2916.2006.01111.x

Cited by 66 publications

(58 citation statements)

References 23 publications

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“…This suggests that the electrostatic interaction between particles is not the main reason leading to the enhancement of viscosity. Lu et al [22,23] supposed that the carboxyl groups can interact with the hydroxyl groups to form link structure by hydrogen bonding. Therefore, the differences of viscosity between slurries with and without glycerol perhaps come from the effect of the links.…”

Section: Resultsmentioning

confidence: 99%

Freeze casting of aqueous alumina slurries with glycerol for porous ceramics

Han

Jiang

2010

Ceramics International

106

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Section: Resultsmentioning

confidence: 99%

Freeze casting of aqueous alumina slurries with glycerol for porous ceramics

Han

Jiang

2010

Ceramics International

106

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“…The pore structure is mainly controlled by the ice nucleation, which is influenced by various parameters such as solution viscosity, concentration of the solute, growth velocity of ice crystals and pH. (Lu, Kessler, & Davis, 2006). Deville et al carried out detailed analysis of influence of func-tional groups on ice crystallization and found that the formation of various structures depends on functional groups (carboxylates, acetates and surfactants) (Deville, Viazzi, & Guizard, 2012).…”

Section: Results and Discussion 31 Scanning Electron Microscopymentioning

confidence: 99%

Surface stiffening and enhanced photoluminescence of ion implanted cellulose – polyvinyl alcohol – silica composite

Shanthini

Sakthivel

Menon

et al. 2016

Carbohydrate Polymers

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Novel Cellulose (Cel) reinforced polyvinyl alcohol (PVA)-Silica (Si) composite which has good stability and in vitro degradation was prepared by lyophilization technique and implanted using N 3+ ions of energy 24 keV in the fluences of 1 × 10 15 , 5 × 10 15 and 1 × 10 16 ions/cm 2 . SEM analysis revealed the formation of microstructures, and improved the surface roughness on ion implantation. In addition to these structural changes, the implantation significantly modified the luminescent, thermal and mechanical properties of the samples. The elastic modulus of the implanted samples has increased by about 50 times compared to the pristine which confirms that the stiffness of the sample surface has increased remarkably on ion implantation. The photoluminescence of the native cellulose has improved greatly due to defect site, dangling bonds and hydrogen passivation. Electric conductivity of the ion implanted samples was improved by about 25%. Hence, low energy ion implantation tunes the mechanical property, surface roughness and further induces the formation of nano structures. MG63 cells seeded onto the scaffolds reveals that with the increase in implantation fluence, the cell attachment, viability and proliferation have improved greatly compared to pristine. The enhancement of cell growth of about 59% was observed in the implanted samples compared to pristine. These properties will enable the scaffolds to be ideal for bone tissue engineering and imaging applications.

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“…7 for the stabilized dispersions, but now in a form of a reduced (relative) viscosity. The reduced viscosity is the ratio of Al 2 O 3 (TM) dispersion viscosity to monomer viscosity as presented for example in references [24,29,30]. This representation enables the comparison between dispersions which are based on different solvent systems.…”

Section: Production Of Particles With Adsorbed Surfactants and Redispmentioning

confidence: 99%