Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Ascorbic acid as a dispersant for concentrated alumina nanopowder suspensions
Date
2014-08-01
Author
Çınar, Simge
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
106
views
0
downloads
Cite This
The stabilization of concentrated nanopowder suspensions is crucial for many industrial applications. Yet, controlling the suspension viscosity is challenging for nanopowder suspension systems. In this study, we examined the adsorption of L-ascorbic acid (Vitamin C) on alumina surfaces and the related reduction in viscosity of the suspensions. Interactions between the ascorbic acid and the alumina surface were investigated by in situ ATR-FTIR and zeta potential measurements. It was shown that ascorbic acid forms complexes with the alumina surface through ligand exchange mechanisms. The optimum concentration of ascorbic acid for minimum suspension viscosity was determined. The maximum achievable solids content could be increased to around 0.35 by the addition of only 1.0 wt.% of dry powder ascorbic acid. Because ascorbic acid is easy to use, inexpensive, and a non-toxic organic additive, it has great potential to be used as a dispersant in a variety of industrial applications, from dilute to concentrated systems of intermediates or products.
Subject Keywords
Materials Chemistry
,
Ceramics and Composites
URI
https://hdl.handle.net/11511/44025
Journal
Journal of the European Ceramic Society
DOI
https://doi.org/10.1016/j.jeurceramsoc.2014.01.014
Collections
Department of Metallurgical and Materials Engineering, Article
Suggestions
OpenMETU
Core
Activity-corn position relations in MuCr(2)O(4)-CoCr2O4 solid solutions and stabilities of MnCr2O4 and CoCr2O4 at 1300 degrees C
Koc, N; Timucin, M (Wiley, 2005-09-01)
Phase equilibria in the system MnO-CoO-Cr2O3 were investigated at 1300 degrees C under controlled oxygen partial pressures by using the gas equilibration technique. The CoO activities in various phase assemblages of the system were measured by determining the partial pressures of oxygen in the gas phase for coexistence with metallic cobalt. The activity data revealed that at 1300 degrees C, MnO-CoO and MnCr2O4-CoCr2O4 solid solutions exhibit mild positive departures from ideal behavior. The activities in th...
Influences of liquid elastomer additive on the behavior of short glass fiber reinforced epoxy
Arikan, A; Kaynak, Cevdet; Tincer, T (Wiley, 2002-10-01)
In this study, improvements in mechanical and thermal behavior of short glass fiber (GF) reinforced diglycidyl ether of bisphenol-A (DGEBA) based epoxy with hydroxyl terminated polybutadiene (HTPB) modification have been studied. A silane coupling agent (SCA) with a rubber reactive group was also used to improve the interfacial adhesion between glass fibers and an epoxy matrix. 10, 20, and 30 wt% GF reinforced composite specimens were prepared with and without silane coupling agent treatment of fibers and a...
Combustion synthesis of calcium phosphate bioceramic powders
Tas, AC (Elsevier BV, 2000-12-01)
Calcium phosphate (hydroxyapatite and tri-calcium phosphate) bioceramics closely resembling, in chemical composition, those found in vivo in human bones have been synthesized by using novel synthetic body fluid solutions via the self-propagating combustion synthesis (SPCS) method. Powder characterization was performed by XRD: ICP-AES, FTIR and SEM.
Effect of carbon fiber amount and length on flame retardant and mechanical properties of intumescent polypropylene composites
ATABEK SAVAŞ, Lemiye; Mutlu, Aysenur; Dike, Ali Sinan; Tayfun, Umit; DOĞAN, Mehmet (SAGE Publications, 2018-02-01)
The effects of carbon fiber amount and length were studied on the flame retardant, thermal, and mechanical properties of the intumescent polypropylene composites. The flame retardant properties of the intumescent polypropylene-based composites were investigated using limiting oxygen index, vertical burning test (UL-94), and mass loss calorimeter. The mechanical properties of the composites were studied using tensile test and dynamic mechanical analysis. According to the flammability tests results, the antag...
Mechanical Performance of Resol Type Phenolic Resin/Layered Silicate Nanocomposites
Tasan, C. Cem; Kaynak, Cevdet (Wiley, 2009-03-01)
Clay addition has been shown to affect polymer resins positively in terms of several physical and chemical properties, including mechanical performance, high temperature endurance and durability. These increases are limited only to relatively low concentrations of reinforcement phase, but at these low concentrations polymer/layered silicate nanocomposites (P/LS NC) have shown to exhibit higher mechanical performance than fiber reinforced polymer composites. This is among the several reasons that make P/LS N...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
S. Çınar, “Ascorbic acid as a dispersant for concentrated alumina nanopowder suspensions,”
Journal of the European Ceramic Society
, pp. 1997–2004, 2014, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/44025.