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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 183 for “"ethylene oxide"”.
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Radiation crosslinked poly(ethylene oxide) hydrogel membranes
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1986.
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The oxidation of ethylene to ethylene oxide
… variables of type of reactor, catalyst, ethylene feed concentration, temperature, and contact time on the products of oxidation of ethylene to ethylene oxide; and together with subsequent hydrolysis to evaluate the commercial feasibility of the manufacture of ethylene glycol. The review …
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Novel pillar formation in evaporating poly(ethylene oxide) droplets
… that aqueous solutions of the polymer poly(ethylene oxide) (PEO) dries to form either the common coffee-ring stain, flat uniform “pancakes", or tall central “pillars". To investigate this phenomenon, I varied experimental factors including: atmospheric temperature, humidity and pressure; …
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Carbohydrate-derivatized poly(ethylene oxide) hydrogels for hepatocyte adhesion
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1996.
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Poly(Ethylene Oxide)/Graphene Oxide Polymer Nanocomposite Electrolyte for Lithium Ion Batteries
… polymer electrolytes. In this study, graphene oxide (GO) nanosheets were used as nanosized fillers in polyethylene oxide (PEO) electrolyte. We demonstrated that about an order of magnitude improvement in lithium-ion conductivity, as high as 10-4 S/cm at room temperature, was achieved with GO …
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A study of the fungicidal action of ethylene oxide and carbon dioxide
Thesis: B.S., Massachusetts Institute of Technology, Department of Industrial Biology, 1935
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The reaction of ethylene oxide with some proteins, amino acids and vitamins
A report that the ethylene oxide fumigation of animal diets reduced their nutritive value has prompted a more detailed study of the reactions of this commercially-used fumigant. It has been demonstrated that the 24-hour fumigation of commercial casein, egg albumin and lactalbumin with ethylene …
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Crystalline Morphologies of Poly(butadiene)-b-Poly(ethylene oxide) Block Copolymers in n-Heptane
… of the semicrystalline poly(butadiene)-b-poly(ethylene oxide)(PB-b-PEO) block copolymers was investigated. The crystalline morphologies discussed here have been generated from selective solvent condition (70°C in n-heptane) via two thermal pathways: (A) by direct immersion into liquid nitrogen, …
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Experimental investigations of drying droplets containing microparticles and mixtures of Poly(ethylene oxide) microparticles
… mixing polystyrene microparticles with Poly(ethylene oxide)(PEO) polymer. Drying droplets of aqueous solutions of PEO is known to form either the familiar "coffee-ring" or a tall "central pillar" depending on the concentration of the polymer, its molecular weight, humidity and drying rate. …
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Limits of justice in environmental governance: Coal ash and ethylene oxide in Waukegan, Illinois
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-08-01
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Linear and star-shaped poly(ethylene oxide) grafted surfaces : grafting density and protein adsorption
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1996.
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Synthesis and Functionalization of Poly(ethylene oxide-b-ethyloxazoline) Diblock Copolymers with Phosphonate Ions
Poly(ethylene oxide) (PEO) and poly(2-ethyl-2-oxazoline) (PEOX) are biocompatible polymers that act as hydrophilic "stealth" drug carriers. As block copolymers, the PEOX group offers a wider variety of functionalization. The goal of this project was to synthesize a poly(ethylene …
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Synthesis and characterization of poly(ethylene oxide) star-shaped polymers and nanoparticles with polyurethane core
Includes bibliographical references (pages 116-121).
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Recovery of Salmonella from Steam and Ethylene Oxide-Treated Spices Using Supplemented Agar with Overlay
… on the recovery of Salmonella from steam and ethylene oxide treated peppercorns and cumin seeds. Traditional agar overlay allowed recovery of significantly more Salmonella (p < 0.05) from inoculated peppercorns treated with steam (65.5C, 15 sec.) than selective media (XLT4) or solid agar …
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On the Melting and Crystallization of Linear Polyethylene, Poly(ethylene oxide) and Metallocene Linear Low-Density Polyethylene
The crystallization and melting behaviors of an ethylene/1-hexene copolymer and series of narrow molecular weight linear polyethylene and poly(ethylene oxide) fractions were studied using a combination of ultra-fast and conventional differential scanning calorimetry, optical microscopy, small angle …
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Single molecule tracking studies of solvent-swollen microdomains in cylinder-forming polystyrene-Poly (ethylene oxide) diblock copolymer films
… microdomains in polystyrene-block-poly(ethylene oxide) (PS-b-PEO) films is done by using single molecule tracking. These films are prepared by sandwiching benzene (with/without methanol) or THF (with/without methanol) solutions containing 5 nM sulforhodamine B (SRB) between two glass …
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A study of the overall internal dynamic mode of poly(ethylene oxide) in methanol with and without lithium perchlorate
It is shown that using PCS the detection and characterization of the overall internal relaxation mode of high molecular weight, narrow molecular weight distribution PEO in methanol with and without the presence of LiClO 4 is so difficult as to be impractical. Moreover, PCS analysis proved to be …
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A study of the effects of lithium perchlorate on poly(ethylene oxide), (Peo) melt dynamic behavior using Fabry-Perot interferometry
Poly(ethylene oxide)/lithium perchlorate (PEO/LiClO4) complexes are widely studied as a prototype solid polymer electrolyte in rechargeable lithium-polymer batteries. Characterizing the structure and dynamics of the system in its molten state is important for understanding the role of the polymer …
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