Frank D. Blum
Oklahoma State University–Stillwater
218Publications
25H-index
2,461Citations
Publications 218
Newest
Published on Feb 1, 2019in Journal of Materials Science & Technology 3.61
Sourabh Biswas1
Estimated H-index: 1
(Oklahoma State University–Stillwater),
S. Habib Alavi7
Estimated H-index: 7
(Oklahoma State University–Stillwater)
+ 2 AuthorsSandip P. Harimkar21
Estimated H-index: 21
(Oklahoma State University–Stillwater)
Abstract Ultrasonic vibration-assisted laser surface processing that involves application of vertical ultrasonic vibrations to the Ti-6Al-4 V alloy substrates while being irradiated with a CO 2 laser was performed for the development of laser melted and textured surfaces with potential applications in biomedical implants. The laser processing resulted in very consistent repeating undulating grooved surfaces, and the undulations were significantly more pronounced in the samples processed with hig...
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Published on Sep 18, 2018in Langmuir 3.79
Madhubhashini Maddumaarachchi2
Estimated H-index: 2
(Oklahoma State University–Stillwater),
Yohan L. N. Mathota Arachchige2
Estimated H-index: 2
(Oklahoma State University–Stillwater)
+ 1 AuthorsFrank D. Blum25
Estimated H-index: 25
(Oklahoma State University–Stillwater)
Variable temperature, solid-state deuterium (2H) NMR spectroscopy has been used to probe the rather complex head-group dynamics of the surfactant cetyltrimethylammonium bromide-d9 (CTAB-d9) in bulk. Heating and cooling runs were made as the surfactant underwent supercooling. 2H NMR line shape simulations were used to identify the hierarchy of the molecular motions of CTAB as a function of temperature. Fast continuous methyl rotations about the N-Cmethyl axes and three-fold jumps about the main c...
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Published on Jan 1, 2018in Journal of Polymer Science Part B 2.50
Ugo N. Arua1
Estimated H-index: 1
(Oklahoma State University–Stillwater),
Frank D. Blum25
Estimated H-index: 25
(Oklahoma State University–Stillwater)
The effects of adsorption of poly(lauryl methacrylate) (PLMA), a side-chain crystalline polymer, on silica were investigated. Fourier transform infrared spectroscopy and differential scanning calorimetry (DSC) measurements were made on both bulk and adsorbed PLMA. The reversible heat flow rates were observed as a function of temperature and the degree of crystallinity of the samples determined based on the broad melting transitions of the side chains in the surface samples. It was found that ads...
1 Citations Source Cite
Published on Nov 14, 2017in Journal of Chemical Education 1.76
Charles E. Carraher7
Estimated H-index: 7
,
Erik Berda + 5 AuthorsSarah E. Morgan Morgan
The Committee on Polymer Education (PolyEd) had its initial planning meeting in 1974. The Intersociety Polymer Education Council (IPEC) has been active since 1990 as an outgrowth of PolyEd. Because of the activities of PolyEd and IPEC, basic polymer concepts have become a required part of undergraduate education and a more common topic in the curriculum for K–12 students. A brief history of polymer education is given. The current and future activities of PolyEd and IPEC are described.
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Published on Oct 1, 2017in Journal of Colloid and Interface Science 5.09
Tan Zhang3
Estimated H-index: 3
(Texas A&M University),
Frank D. Blum25
Estimated H-index: 25
(Oklahoma State University–Stillwater)
Abstract Surfactant-catalyzed room-temperature radical polymerization of methyl methacrylate (MMA) was conducted in the presence of fumed silica nanoparticles and water. Three types of surfactants, cationic (CTAB), nonionic (Triton X-100) or anionic (SDS), were used to catalyze the decomposition of the initiator, 2,2′-azobisisobutyronitrile (AIBN). The surfactant-catalyzed decomposition rate constant for AIBN at room temperature was found to be independent of the surfactant type. However, the ra...
2 Citations Source Cite
Neda Ghousifam1
Estimated H-index: 1
(Oklahoma State University–Stillwater),
Hamid Mortazavian5
Estimated H-index: 5
(Oklahoma State University–Stillwater)
+ 3 AuthorsHeather Gappa-Fahlenkamp5
Estimated H-index: 5
(Oklahoma State University–Stillwater)
Abstract Monocyte transendothelial migration is a multi-step process critical for the initiation and development of atherosclerosis. The chemokine monocyte chemoattractant protein-1 (MCP-1) is overexpressed during atheroma and its concentration gradients in the extracellular matrix (ECM) is critical for the transendothelial recruitment of monocytes. Based on prior observations, we hypothesize that both free and bound gradients of MCP-1 within the ECM are involved in directing monocyte migration....
8 Citations Source Cite
Published on Mar 14, 2017in Macromolecules 5.91
Boonta Hetayothin2
Estimated H-index: 2
,
Roy A. Cabaniss2
Estimated H-index: 2
,
Frank D. Blum25
Estimated H-index: 25
When only tightly bound poly(vinyl acetate) (PVAc) was adsorbed on silica, the plasticizer, di(propylene glycol) dibenzoate (DPGDB), was not effective in lowering its glass transition. To determine why the plasticizer was not effective, we probed the behavior of the deuterated plasticizer di(propylene glycol) dibenzoate (DPGDB-d10)/PVAc/silica system using deuterium (2H) solid state NMR and temperature-modulated differential scanning calorimetry (TMDSC). PVAc with 37% (w/w) of plasticizer/polyme...
2 Citations Source Cite
Published on Mar 21, 2017in Langmuir 3.79
Helanka J. Perera2
Estimated H-index: 2
,
Hamid Mortazavian5
Estimated H-index: 5
,
Frank D. Blum25
Estimated H-index: 25
Modification of diatomaceous earth (DE) was performed using alkyltrimethoxysilanes of different chain lengths (C3, C8, C12, C16, and C18), and their resultant properties were determined. The thermal properties of these alkyltrimethoxysilane-treated DE powders were probed using thermogravimetric analysis and temperature-modulated differential scanning calorimetry, and the surface/porosity was studied using nitrogen adsorption and electron microscopy. Crystallinity of the hydrocarbon tails occurre...
8 Citations Source Cite
Published on Sep 1, 2017in Applied Surface Science 4.44
Bhishma R. Sedai2
Estimated H-index: 2
(Oklahoma State University–Stillwater),
S. Habib Alavi7
Estimated H-index: 7
(Oklahoma State University–Stillwater)
+ 3 AuthorsFrank D. Blum25
Estimated H-index: 25
(Oklahoma State University–Stillwater)
Abstract Superhydrophobic surfaces have been prepared from three different types of diatomaceous earth (DE) particles treated with 3-(heptafluoroisopropoxy)propyltrimethoxysilane (HFIP-TMS) and low molecular mass polystyrene. The untreated particles, consisting of CelTix DE (disk shape), DiaFil DE (rod shape) and EcoFlat DE (irregular), were studied using particle size analysis, bulk density, pore volume and surface area analysis (via Brunauer–Emmett–Teller, BET, methods). The treated particles ...
6 Citations Source Cite
Published on Oct 1, 2017in Polymer Journal 2.17
Gregory N. Smith10
Estimated H-index: 10
,
James E. Hallett5
Estimated H-index: 5
(University of Bristol)
+ 4 AuthorsJulian Eastoe47
Estimated H-index: 47
Composites of the industrially important polymer, poly(methyl methacrylate) (PMMA), were prepared by free-radical polymerization of MMA with varying amounts (1–30 wt. %) of sodium dioctylsulfosuccinate (Aerosol OT or AOT) surfactant added to the reaction mixture. The composites with AOT incorporated show enhanced resistance to thermal degradation compared to pure PMMA homopolymer, and micro-cone combustion calorimetry measurements also show that the composites are combustion-resistant. The physi...
5 Citations Source Cite
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