Results 311 to 320 of about 22,854 (349)

Hollow Carbon Nanotube Microspheres and Hemimicrospheres

The Journal of Physical Chemistry C, 2009
The layer-by-layer (LBL) assembly of multiwalled carbon nanotubes (MWNTs) and diazoresin (DR) is realized via the electrostatic interactions on planar substrates and polystyrene (PS) microsphere templates. The successful planar and spherical growth of DR/MWNT multilayers is monitored by scanning electron microscopy (SEM) and UV−vis spectrophotometry ...
Mingxue Tang, Yujun Qin, Youyou Wang, Zhi-Xin Guo   +3 more
openaire   +1 more source

Surface modification of carbon microspheres by KMnO4

Carbon, 2010
Carbon microspheres (CMSs) were synthesized by chemical vapor deposition in an Ar atmosphere using deoiled asphalt as carbon source. KMnO4 aqueous solutions with different concentrations were used to oxidize the CMSs to form MnO2-coated CMSs (MnO2/CMS composites) and H2C2O4 solution was used to wash the MnO2/CMS composites to remove MnO2 to obtain ...
Xu-guang Liu, Ming-cong Guo, Yong-zhen Yang, Hong-yan Liu, Bing-she Xu   +4 more
openaire   +1 more source

Carbon nanotubes prepared from polymer microspheres by spinning and carbonizing

Molecular Crystals and Liquid Crystals, 2002
Multi-wall carbon nanotubes (CNTs) with diameters between 10 nm and 20 nm were prepared by melt spinning, stabilizing and carbonizing of fine core/shell-1/shell-2 polymer microspheres. Microspheres were synthesized by three-steps soap free emulsion polymerization of methylmetacrylate (MMA) and acrylonitrile (AN) using potassium persulfate (KPS) as a ...
Hulicova, Denisa, Hosoi, Katsuhiko, Kuroda, Shin-Ichi, Oya, Asao, Abe, Hiroaki   +4 more
openaire   +3 more sources

Water-in-Trichloroethylene Emulsions Stabilized by Uniform Carbon Microspheres

Langmuir, 2011
Uniform hard carbon spheres (HCS), synthesized by the hydrothermal decomposition of sucrose followed by pyrolysis, are effective at stabilizing water-in-trichloroethylene (TCE) emulsions. The irreversible adsorption of carbon particles at the TCE-water interface resulting in the formation of a monolayer around the water droplet in the emulsion phase is
Venkataraman, Pradeep, Sunkara, Bhanukiran, St. Dennis, J. E., He, Jibao, John, Vijay T., Bose, Arijit   +5 more
openaire   +3 more sources

Strings of polymer microspheres stabilized by oxidized carbon nanotubes

Journal of Colloid and Interface Science, 2014
Oxidized carbon nanotubes (CNTOs) with hydrophilic oxygen-containing functional groups and hydrophobic conjugated structure are prepared by the oxidation of carbon nanotubes (CNTs). After the polymerization of styrene with CNTOs dispersed in aqueous phase, polystyrene (PS) microspheres with string-like structure are obtained. Thermogravimetic analysis (
Guannan, Yin, Zheng, Zheng, Haitao, Wang, Qiangguo, Du, Hongdong, Zhang   +4 more
openaire   +2 more sources

LOW CARBON BINDERS WITH ASH MICROSPHERE

SGEM International Multidisciplinary Scientific GeoConference� EXPO Proceedings
Construction technologies are among the most critical in terms of negative impact on the environment. Burnt binders, primarily cement and air-lime, emit significant volumes of carbon dioxide and man-made heat. At the same time, a large amount of hydrocarbon fuel is also consumed for their firing.
Victoria Petropavlovskaya, Kirill Petropavlovskii, Tatiana Novichenkova, Michail Sulman, Yury Kosivtsov   +4 more
openaire   +1 more source

Carbon Microspheres as Ball Bearings in Aqueous-Based Lubrication

ACS Applied Materials & Interfaces, 2011
We present an exploratory study on a suspension of uniform carbon microspheres as a new class of aqueous-based lubricants. The surfactant-functionalized carbon microspheres (∼0.1 wt %) employ a rolling mechanism similar to ball bearings to provide low friction coefficients (μ ≈ 0.03) and minimize surface wear in shear experiments between various ...
J E, St Dennis, Kejia, Jin, Vijay T, John, Noshir S, Pesika   +3 more
openaire   +2 more sources

Dopamine-Induced Mineralization of Calcium Carbonate Vaterite Microspheres

Langmuir, 2010
Two biogenic materials from mussels are attracting attention from scientists: calcium carbonate (CaCO(3)), the most widely studied biomineral that composes the shell, or nacre, of mussels, and dopamine, a small catechol-containing biomimetic molecule of adhesive foot proteins secreted by mussels.
Kim, S Kim, Sungjin, Park, CB Park, Chan Beum   +1 more
openaire   +3 more sources

Polymeric Microspheres Prepared by Spraying into Compressed Carbon Dioxide

Pharmaceutical Research, 1995
The objective was to prepare polymeric microparticles by atomizing organic polymer solutions into a spray chamber containing compressed CO2 (PCA-process) and to study the influence of various process parameters on their morphological characteristics.The swelling of various pharmaceutically acceptable polymers [ethyl cellulose, poly(methyl methacrylate),
R, Bodmeier, H, Wang, D J, Dixon, S, Mawson, K P, Johnston   +4 more
openaire   +2 more sources

Hierarchical biomineralization of calcium carbonate regulated by silk microspheres

Acta Biomaterialia, 2013
As an analog of the main protein contained in nacre regenerated Bombyx mori silk fibroin has a significant influence on the morphology and polymorphic nature of CaCO3 in the biomineralization process. A number of studies have implied that the self-assembling aggregate structure of silk fibroin is a key factor in controlling CaCO3 aggregation.
Xiuli, Zhang, Zhihai, Fan, Qiang, Lu, Yongli, Huang, David L, Kaplan, Hesun, Zhu   +5 more
openaire   +2 more sources