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Showing 1 to 20 of 934 for “"ETHER"”.
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Aqueous poly(arylene ether ether ketone) suspensions
… preparation of submicron diameter poly(arylene ether ether ketone) suspensions in water, and analysis of suspension stability as a function of the suspension variables. This thesis focuses on developing the procedures, and defining the parameters, for preparing stable aqueous suspensions of PEEK …
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Solvent-Induced Crystallization of Poly(ether ether ketone)
… during solvent-induced crystallization of poly(ether ether ketone) (PEEK). Unoriented amorphous PEEK films were immersed in aprotic organic liquids at ambient temperature and bulk properties or characteristics were monitored as a function of immersion time. The sorption behavior, Tg and Tm° …
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Effect of intermediate solvents on poly(ether ether ketone)
The interaction between poly(ether ether ketone) (PEEK) and three solvents (i.e., methylene chloride, tetrahydrofuran, and acetone) was studied by means of several complementary techniques. A series of eleven 0.3 mm thick PEEK films was produced. Each film had a certain crystallinity index and …
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Crossing the ether
This dissertation examines the rise of English language commercial radio broadcasting from the Continent to Britain prior to World War Two, and its effect on the Public Service monopoly defended by the BBC. It explores the long-term effect on the history of British broadcasting caused by this …
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Morphology-Property Relationships in Semicrystalline Aerogels of Poly(ether ether ketone)
… for the thermoreversible gelation of poly(ether ether ketone) (PEEK) in dichloroacetic acid (DCA) and 4-chlorophenol (4CP) were constructed over broad temperature and concentration ranges, revealing that PEEK is capable of dissolving and forming gels in DCA and 4CP up to a weight fraction …
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Biomimetic Design of Poly(ether ether ketone) Composites for Bone Replacement
… new material for bone replacement, poly(ether ether ketone) or PEEK. PEEK is a polymer that can be introduced to the body without rejection, and has been used as a material for spinal fusions and partial skull replacements. Additionally, not being a metal, PEEK avoids the risk of the …
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Some Derivatives of Diphenyl Ether
… iodo derivatives of a substituted diphenyl ether, and its intermediate compounds, The diphenyl ether studied was 4-phenoxyhydrocinnamic acid. | The study of iodo derivatives of diphenyl ether has been recently stimulated by the work of Harington and Barger, who proved quite conclusively that …
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Space, time, ether, and Kant
Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T15:06:36Z Item is restricted indefinitely.
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Cross linked sulphonated poly (ether ether ketone) for the development of polymer electrolyte membrane fuel cell
Ion irradiation has been investigated as a route for the preparation of mechanically stable and highly durable cross linked sulphonated PEEK for fuel cell application. The formation of cross linking was confirmed by solvent extraction using the well known Charlsby–Pinner equation. The DSC results …
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Time Dependent Properties of Semicrystalline Poly(Arylene Ether Ether Ketone) (Peek) Above and Below the Glass Transition
Long time annealing of semicrystalline PEEK above the glass transition results in the observation of several time dependent phenomena - "physical aging", "secondary crystallization", "multiple melting" of lamellae with different thermal stability etc. Their interrelation - common origin and …
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Preparation of highly reflective films by supercritical infusion of a silver additive into poly(ether ether ketone)
… to receive a great deal of attention. Poly ether ether ketone (PEEK) is well known for its excellent thermal, chemical, mechanical and electrical properties. These properties make it ideal for use in aerospace, electrical, fluid handling and coating industries. Supercritical infusion of a …
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Physical and mechanical behavior of amorphous poly(arylene ether)ketone and poly(arylene ether)ketone modified bismaleimides
Bisphenol-A based poly(arylene ether)ketones (PAEKs) are tough, amorphous processable thermoplastics possessing a glass transition temperature of approximately 160°C. In the form of a thermoset, these polymers have potential usages as structural engineering matrix resins or adhesives, as well as …
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An Investigation of the Microstructure and Properties of a Cryogenically Mechanically Alloyed Polycarbonate-Poly(Ether Ether Ketone) System
… system: polycarbonate (PC) and poly (ether ether ketone) (PEEK). Mechanically milled and alloyed powders were characterized using a variety of techniques including microscopy and thermal analysis. Cryogenically mechanically alloyed powders processed for 10 hours were shown to have a …
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Fundamental aspects of the tribological behavior of poly(ether-ether-ketone)-based in-situ composites at elevated temperatures
… composite systems based on binary blends of Polyetheretherketone (PEEK) and HX-1000, a commercially available TLCP, as well as on ternary blends of PEEK, Polyetherimide (PEI) and HX -1000. The specific tribological phenomenon investigated is unlubricated sliding. Friction and wear measurements …
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Process-morphology-property Relationships in Strut-like Poly(ether ether ketone) Aerogels Prepared through Thermally Induced Phase Separation
Poly(ether ether ketone) (PEEK) aerogels resulting from gelation in 1,3-diphenyl acetone (DPA) were prepared for the first time. The phase separation mechanism was determined to be solid-liquid phase separation which resulted in the formation of aerogels consisting of crystalline axialites. These …
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25cc HCCI engine fueled with Diethyl Ether
This research forms part of an ongoing HCCI study at the SASOL Advanced Fuels Laboratory to investigate and understand engine configuration and fuel chemistry effects on combustion in HCCI engines. This project continues from a previous project where a small Progress Aero Works (PAW) 6.5cc high …
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Synthesis and characteristics of polyarylene ether sulfones
… Two different types of mechanical tests together with DSC and SEM measurements showed that improved solvent resistance (especially to liquids of interest to NASA for aerospace functions) could be achieved via a novel liquid induced crystallization process. ¹³C and proton NMR spectral …
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Organometallic Compounds From Aryl Halides Containing Ether Functions
Made available in DSpace on 2014-12-05T19:36:39Z (GMT). No. of bitstreams: 1 0023327.pdf: 5275638 bytes, checksum: cab61fd5524580f472a594c7b350164c (MD5) Previous issue date: 1957
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