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Showing 1-30 of 39 results for "454338" within Papers
Youngdo Jeong et al.
Chemical communications (Cambridge, England), 47(44), 12077-12079 (2011-10-15)
Emulsions stabilized by enzyme-nanoparticle (NP) complexes were used to fabricate robust biocatalytic scaffolds after core solidification via crosslinking. These biocatalysts feature ease of formation, high retention of enzymatic activity and reusability.
Jason M Kamphaus et al.
Journal of the Royal Society, Interface, 5(18), 95-103 (2007-06-21)
Using self-healing materials in commercial applications requires healing chemistry that is cost-effective, widely available and tolerant of moderate temperature excursions. We investigate the use of tungsten (VI) chloride as a catalyst precursor for the ring-opening metathesis polymerization of exo-dicyclopentadiene (exo-DCPD)
Sebastijan Kovačič et al.
ACS applied materials & interfaces, 6(21), 19075-19081 (2014-10-22)
Zinc(II) oxide nanoparticles were used for the stabilization of dicyclopentadiene (DCPD)-water-based high internal phase emulsions (HIPEs), which were subsequently cured using ring-opening metathesis polymerization (ROMP). The morphology of the resulting ZnO-pDCPD nanocomposite foams was investigated in correlation to the nanoparticle
Frontal ring-opening metathesis polymerization of dicyclopentadiene.
Mariani A, et al.
Macromolecules, 34(19), 6539-6541 (2001)
L G Stehmeier et al.
Canadian journal of microbiology, 42(10), 1051-1060 (1996-10-01)
Degradation of dicyclopentadiene (DCPD) to carbon dioxide and oxygenated intermediates was established in the laboratory. Screening of many inocula using BIOLOGMT plates showed that no single colony isolate readily mineralized DCPD. Mixed cultures from a variety of environmental sources produced
Allergic contact dermatitis from unsaturated polyester resin consisting of maleic anhydride, phthalic anhydride, ethylene glycol and dicyclopentadiene.
Keiko Minamoto et al.
Contact dermatitis, 46(1), 62-63 (2002-03-29)
Abhinaba Gupta et al.
ACS applied materials & interfaces, 5(3), 924-933 (2013-01-04)
This article describes the separation of mixtures of fatty acid salts using a new organic solvent nanofiltration membrane based on polydicyclopentadiene (PDCPD). Mixtures of free fatty acids could not be separated by the membranes because they permeated at similar rates.
[Gas chromatographic detection of dicyclopentadiene in workplace air].
Zhonghua lao dong wei sheng zhi ye bing za zhi = Zhonghua laodong weisheng zhiyebing zazhi = Chinese journal of industrial hygiene and occupational diseases, 21(4), 302-303 (2004-02-06)
A S Jones et al.
Journal of the Royal Society, Interface, 4(13), 395-403 (2007-01-26)
Self-healing polymers, based on microencapsulated dicyclopentadiene and Grubbs' catalyst embedded in the polymer matrix, are capable of responding to propagating fatigue cracks by autonomic processes that lead to higher endurance limits and life extension, or even the complete arrest of
N P Mironova et al.
Gigiena truda i professional'nye zabolevaniia, (12)(12), 37-39 (1989-01-01)
The experimental data proposed deals with the adsorption properties of the construction materials used in the dicyclopentadiene (DCPD) production sites. Evaluation of secondary sources of DCPD air contamination is made. Construction materials with the lowest DCPD adsorption are proposed which
Xingchu Gong et al.
European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V, 93, 260-266 (2015-04-25)
Brittleness is one of the important material properties that influences the success or failure of powder compaction. We have discovered that the reciprocal of diametrical elastic strain at fracture is the most suitable tablet brittleness indices (TBIs) for quantifying brittleness
E N Brown et al.
Journal of microencapsulation, 20(6), 719-730 (2003-11-05)
Microencapsulated healing agents that possess adequate strength, long shelf-life and excellent bonding to the host material are required for self-healing materials. Urea-formaldehyde microcapsules containing dicyclopentadiene were prepared by in situ polymerization in an oil-in-water emulsion that meet these requirements for
Dejan D Andjelkovic et al.
Biomacromolecules, 7(3), 927-936 (2006-03-15)
Novel thermosetting copolymers, ranging from tough and ductile to very soft rubbers, have been prepared by the cationic copolymerization of regular (SOY) and 100% conjugated soybean oils (C(100)SOY) with dicyclopentadiene (DCP) catalyzed by Norway fish oil (NFO)-modified and SOY- and
L Olivella et al.
TheScientificWorldJournal, 2, 1108-1114 (2003-06-14)
The aim of this communication is to provide preliminary results on MTBE monitoring, and at the same time to propose some new tracers of gasoline pollution in groundwater. An overview is presented on benzene-toluene-ethylbenzene-xylene (BTEX), methyl tertiary-butyl ether (MTBE), and
M P Barsem et al.
Gigiena truda i professional'nye zabolevaniia, (6)(6), 25-29 (1990-01-01)
The labour conditions at an experimental dicyclopentadiene (DCPD) processing line was characterized by a combined action of occupational hygienic factors, mostly contamination of the working zone air with chemical substances. Both to the degree of its hazardousness and concentration levels
The Hai Tran et al.
Advanced materials (Deerfield Beach, Fla.), 27(25), 3825-3830 (2015-05-27)
A novel bilayer coating system for autonomous corrosion-triggered self-healing is demonstrated. The storage of the encapsulated monomer and the catalyst is separated in two different layers. The encapsulated catalyst is stored inside a metallic coating, which ensures its activity even
N Melody Esfandiari et al.
Journal of the American Chemical Society, 133(45), 18145-18147 (2011-10-20)
A high-sensitivity and high-resolution single-particle fluorescence microscopy technique differentiated between homogeneous and heterogeneous metathesis polymerization catalysis by imaging the location of the early stages of polymerization. By imaging single polymers and single crystals of Grubbs II, polymerization catalysis was revealed
Astrid-Caroline Knall et al.
Tetrahedron letters, 55(34), 4763-4766 (2014-08-26)
Inverse electron demand Diels-Alder additions (iEDDA) between 1,2,4,5-tetrazines and olefins have recently found widespread application as a novel 'click chemistry' scheme and as a mild technique for the modification of materials. Norbornenes are, due to their straightforward synthetic availability, especially
Mònica Rosell et al.
Journal of chromatography. A, 1132(1-2), 28-38 (2006-08-15)
A new protocol for the simultaneous determination of methyl tert-butyl ether (MTBE); its main degradation products: tert-butyl alcohol (TBA) and tert-butyl formate (TBF); other gasoline additives, oxygenate dialkyl ethers: ethyl tert-butyl ether (ETBE), tert-amyl methyl ether (TAME) and diisopropyl ether
C Bevan et al.
Toxicology and industrial health, 8(6), 353-367 (1992-11-01)
Fischer 344 rats were exposed by inhalation to 0, 1, 5 or 50 ppm dicyclopentadiene (DCPD) vapor 6 hr/day, 5 days/week for 13 weeks, followed by a 13-week recovery period. Animals were euthanized following completion of exposure at 2, 6
S E Barnes et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 61(13-14), 2946-2952 (2005-09-17)
The cure of polydicyclopentadiene conducted by ring-opening metathesis polymerisation in the presence of a Grubbs catalyst was studied using non-invasive Raman spectroscopy. The spectra of the monomer precursor and polymerised product were fully characterised and all stages of polymerisation monitored.
Jesús Torres et al.
Annals of anatomy = Anatomischer Anzeiger : official organ of the Anatomische Gesellschaft, 200, 126-133 (2015-05-02)
The aim of this study was to test bone tissue response to monetite granules in comparison with intramembranous autologous bone graft in a rabbit calvaria critical size defect model. Novel monetite granules were synthesized by thermal conversion of set brushite
M Satoh et al.
Eisei Shikenjo hokoku. Bulletin of National Institute of Hygienic Sciences, (108)(108), 71-77 (1990-01-01)
A twenty-eight day repeated dose toxicity test of dicyclopentadiene (DCPD) was carried out in male and female F344 rats at the dose levels of 200, 40, 8 or 0 mg/kg/day. Thirty six animals of both sexes were divided into 6
Aaron C Jackson et al.
Macromolecular rapid communications, 32(1), 82-87 (2011-03-25)
A generalized silica coating scheme is used to functionalize and protect sub-micron and micron size dicyclopentadiene monomer-filled capsules and polymer-protected Grubbs' catalyst particles. These capsules and particles are used for self-healing of microscale damage in an epoxy-based polymer. The silica
L G Stehmeier et al.
Biodegradation, 10(2), 135-148 (1999-08-31)
Dicyclopentadiene (DCPD) is formed during the pyrolysis of alkanes to produce olefins suitable for manufacturing synthetic polymers. DCPD has an irritating odor with a 5 ppb detection level that provides the impetus for remediation efforts. One method of destroying odors
Cascade reactions using LiAlH4 and grignard reagents in the presence of water.
M Brett Runge et al.
Angewandte Chemie (International ed. in English), 47(5), 935-939 (2007-12-18)
Abhinaba Gupta et al.
Chemical communications (Cambridge, England), 47(37), 10236-10238 (2011-08-23)
Thimbles composed of polydicyclopentadiene retained Pd and phosphines used in Buchwald-Hartwig and Sonogashira coupling reactions but allowed the products to permeate. The products were isolated in high yields on the exteriors of the thimbles with no detectable contamination from phosphine
Frederick Osei-Yeboah et al.
International journal of pharmaceutics, 484(1-2), 146-155 (2015-03-01)
The harmonized monograph on tablet friability test in United States Pharmacopeia (USP), European Pharmacopeia (Pharm. Eur.), and Japanese Pharmacopeia (JP) is designed to assess adequacy of mechanical strength of a batch of tablets. Currently, its potential applications in formulation development
Marcela C Rodrigues et al.
Journal of biomedical materials research. Part B, Applied biomaterials, 103(8), 1670-1678 (2015-01-23)
The study compared ion release from resin-based materials containing calcium orthophosphates. Amorphous calcium phosphate (ACP), dicalcium phosphate anhydrous (DCPA), dicalcium phosphate dihydrate (DCPD), and tricalcium phosphate (β-TCP) nanoparticles were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), dynamic light
Gerald O Wilson et al.
ACS applied materials & interfaces, 3(8), 3072-3077 (2011-07-07)
Dimethylnorbornene ester (DNE) is successfully used as a noncovalent adhesion promoter. DNE was confirmed to copolymerize with dicyclopentadiene (DCPD) to yield a copolymer with better adhesion to an EPON 828 epoxy matrix relative to poly(DCPD) alone. The mechanical properties of
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