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Full-Text Articles in Engineering
Coating Component Migration In Paper Coatings, Emilia Purington
Coating Component Migration In Paper Coatings, Emilia Purington
Electronic Theses and Dissertations
In many applications such as in paints and coatings, pigments are mixed with polymeric binders to generate the final product. In the coating of paper, properties like strength, durability, and print quality are affected not only by the binder type, but the final location of the binder relative to the pigments and the fibers. During the application and drying of a paper coating, binder is known to migrate. A number of methods are available to measure the migration of latex or starch. However, all of these methods have some limitations, especially when starch, latex and kaolin are components of the …
Formate Assisted Pyrolysis Of Lignin, Mayank S. Patel
Formate Assisted Pyrolysis Of Lignin, Mayank S. Patel
Electronic Theses and Dissertations
A significant fraction of global energy demand is met through nonrenewable petroleum feedstock, which increases the risk of energy security. The energy production from nonrenewable petroleum feedstocks is one of the large contributor to greenhouse gas emissions, which can cause climate change impacts. The energy security can be improved, and the greenhouse gas emissions can be reduced by deriving energy from domestically available renewable lignocellulosic feedstocks such as wood. Wood has three major components: cellulose, hemicellulose, and lignin. The cellulose is primarily used to produce pulp and paper. The hemicellulose is often utilized to produce a valueadded chemical like furfural. …
Mechanistic Studies Of Reducible Metal Oxides As Hydrodeoxygenation Catalysts, Akbar Mahdavi Shakib
Mechanistic Studies Of Reducible Metal Oxides As Hydrodeoxygenation Catalysts, Akbar Mahdavi Shakib
Electronic Theses and Dissertations
Hydrodeoxygenation of phenol to benzene using ruthenium supported titania catalysts strongly varies depending on the support crystal structure and preparation conditions. Here, we performed spectroscopic characterization of titania supports to identify the surface impurities common to commercial and synthesized titania samples using a variety of spectroscopic methods. Sulfate impurities were detected for the commercial anatase samples and a procedure for their elimination was proposed so that inactive catalysts gained reactivity. Surface hydroxyls of different TiO2 samples (anatase, rutile, and pyrogenic) were identified using diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) experiments performed on vigorously cleaned surfaces and a facet-specific assignment …
The Production, Characterization, And Upgrading Of Biochars Into Activated Carbon, Kasey Johnston
The Production, Characterization, And Upgrading Of Biochars Into Activated Carbon, Kasey Johnston
Honors College
There is a growing demand for sustainable alternatives to petroleum based fuels to be used in the transportation sector. To this end, thermochemical pathways have been proposed for the conversion of renewable feedstock such as wood and corn stover to transportation fuels. Although it is recognized that renewable feedstock sources are environmentally superior to the current petroleum based fuels, the commercial production of renewable fuels via thermochemical pathways must also be economically advantageous. Thermochemical conversion of a renewable feedstock results in the production of a significant amount of biochar that has a low economic value. To improve the overall economics …
Use Of Renewable Cellulose Nanofibrils And Water-Barrier Layers In The Production Of Snack Packaging, Thoalfakar Saheb Alsaady
Use Of Renewable Cellulose Nanofibrils And Water-Barrier Layers In The Production Of Snack Packaging, Thoalfakar Saheb Alsaady
Honors College
From potato chips to chocolate bars, snack packaging requires materials that have excellent water vapor and oxygen barrier properties, good mechanical behavior, and good grease resistance. The most common material used in snack packaging is polypropylene (PP) layer that has been aluminum coated or metalized on one surface. The problem is not only that non-renewable petroleum is used to produce the plastic, but the production of aluminum requires large energy inputs and generates toxic wastes. In addition, this current packaging does not break down in the environment and cannot be recycled. This research is looking at using layers of cellulose …