Thesis (M.S.)--Mississippi State University. Department of Chemical Engineering. / Title from title screen. Includes bibliographical references.

Thesis (Ph. D.)--Institute of Paper Chemistry, 1947. / Bibliography: leaves 160-163.

M. Tech. Engineering: Chemical. / Aims to establish the cure kinetics of the thermosetting systems through the use of rheology and differential scanning calorimetry. Dynamic mechanical and thermal mechanical analyses will be used to ascertain the mechanical properties. The resistance to thermal degradation will be determined by thermogravimetric analysis.

No description available.

No description available.

This creative project was a study of combining large-scale ceramics and polymer resin (Brandname: Bondo) vessels. This project came out of an earlier experiment combining metals and resin, and therefore the interest in combining clay and resin was a natural transition for me, since ceramics was my major focus. I had a definite interest in the challenge of marrying two very different materials; clay and resin, and by using this combination I would make vessels that were visually successful and engaged the viewer.The technical basis for all of the ceramic elements of the vessels is wheel throwing. The molds made for the resin parts of the piece were wheel thrown as well. This project was very unique and there was little documented technical information for me to rely on other than personal experimentation and ceramic knowledge.The visual elements of clay with its opaqueness, and resin with its translucent qualities offered great visual contrast. The use of color contrast between warm and cool colors became an important element of the pieces.From an expressive standpoint, I feel the form of the vessels is viewed as solid and confrontational, yet very compelling. The smooth surfaces and the lush vibrant colors compel the viewer to examine the forms. The pieces are commanding in size and strength, so the viewer is somewhat hesitant to view for too long. There is a visual push/pull, a contrast between these simple yet over-scaled layered forms that evokes an emotional push/pull as well. / Department of Art

A microwave assisted methodology was developed to modify Merrifield resins (1-2% cross-linked containing 1.0-3.5 mmol Cl-/g) with different nominal molecular weights PEG (200-1000). The synthesis was also carried out by conventional heating to assess the differences between the two procedures. The most efficient synthesis was achieved by using microwave and by using PEG with molecular weight 200 and MR 2% crosslinked containing 1.25 mmol Cl -/g. The structural elucidation was carried out using Fourier transform infrared (FTIR) spectroscopy and elemental analyses. Upon pyrolsis-GC/MS analysis of the PEGylated MR, the PEG showed the tendency to undergo thermal degradation by the loss of a smaller PEG fragments. This observed degradation of PEG was less prominent during microwave assisted synthesis compared to conventional heating, in addition to faster reaction rates and higher yields. As expected, the PEGylated MR showed improved swelling properties in polar solvents. The chemical reactivity of the PEGylated Merrifield resin was confirmed by the esterification with pyruvic acid and by the substitution of hydroxyl group using thionyl chloride. In addition, the PEGylated MR was converted into (1) polymer-supported acid/base or redox indicator by the attachment of a blue organic dye - 2,6-dichloroindophenol (DCIP) through a nucleophilic substitution reaction and (2) beta-cyclodextrin trap, a water insoluble inclusion-complex, by immobilization of beta-cyclodextrin through cross-linking with 1,6-hexamethylene diisocyanate reagent.

The application of laser generated ultrasonics was first demonstrated in the mid-seventies and has shown good potential when applied to isotropic materials. However, its use with composite materials is still in the early stages of development. This study explores the potential for application of laser generated Rayleigh and Lamb waves in graphite/epoxy composites. Numerical results are obtained by the solution of the wave equations using assumed solutions, and enforcing the boundary conditions. Experimentally, Rayleigh and Lamb waves were generated by a Q-switched ruby laser in the ablation regime and detected by piezoelectric pinducers which permitted accurate phase velocity measurements. The Rayleigh wave velocity was measured at various directions relative to the fiber direction and results were found to agree closely with numerical predictions. The increase of surface wave velocity using thin plates could be useful for the application of delamination detection in thick composites and an increase of Rayleigh wave attenuation could indicate damages caused by impact. Also, surface waves can reflect from small surface cracks. Therefore, laser generated surface waves, particularly along the fiber direction, have high potential for application in non-destructive testing. Lamb wave experiments were conducted in aluminum plates and gave distinctive signals, but there were some difficulties in detecting the precise arrival of each Lamb wave mode for the graphite/epoxy composite plates. / Graduation date: 1992

Diss. (sammanfattning) Umeå : Univ., 2006. / Härtill 5 uppsatser.

Diss. (sammanfattning) Stockholm : Karol. inst. / Härtill 5 uppsatser.