Global ETD Search
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 9 of 9 for “"structural polymers"”.
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Frictional vibrations in structural polymers
This study investigated the dry sliding of Acrylonitrile Butadiene Styrene (ABS) in a polymer-on-polymer configuration. The effect of several material and system parameters were investigated to determine their influence on the frictional behavior of the ABS materials. These parameters included: the …
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Micromechanics of deformation in polymers modified by inorganic and rubber particles
Many structural polymers exhibit brittle behavior at low temperatures and/or high strain rates. It has been shown that the incorporation of rubber and inorganic particles can have significant toughening effects. Previous studies have shown that the particles can alter the matrix morphology at the …
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A study of the static to kinetic friction transition of polymers
… transition from static to kinetic friction for structural polymers and continues previous research conducted by Dr. N. S. Eiss, B. McCann, and R. Molique. A new test apparatus which simultaneously measures friction, normal load, and relative velocity was developed to study this transition. The …
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Aging of whiskey spirits in barrels of non-traditional volume
… wood itself provides extractives derived from structural polymers which have been degraded during barrel construction. These extractives have a cumulative effect on the sensory characteristics of the aging spirit. The traditional barrel for the aging of spirits ranges from 52-60 American …
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PCR-DDGE Comparison of Fecal Bacteria From Captive and Wild Populations of the Endangered San Esteban Island Chuckwalla (Sauromalus varius)
… microorganisms which can break down plant structural polymers. This study analyzes the bacterial populations from fecal/uric acid deposits of wild and captive samples of the endangered, herbivorous San Esteban chuckwalla (Sauromalus varius: Iguanidae). Substrate and diet samples were also …
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An investigation of the physiological roles and enzymatic properties of invertases in tobacco and hybrid poplar
… cellulose and lignin, the two most abundant biopolymers on earth, had not been conducted. Consequently, we investigated the effects of overexpressing yeast-derived invertases in tobacco and hybrid poplar. Transgenic tobacco expressing the yeast-derived invertases showed reduced height and …
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Microvascular strategies for damage restoration
… of biomimetic microvascular networks within structural polymers and polymer composites. Internal networks of channels act as pathways for mass transport of liquid healing agents to damage regions that intersect the vasculature. Microvascular self-healing has proven effective in restoring …
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Thermal regulation of vascularized fiber-reinforced polymer matrix composites
… matrix composites (PMC) possess outstanding structural properties, including high strength and stiffness, low weight, long fatigue life, and excellent manufacturability of complex geometries. However, their application is still limited where high temperature service is required, including …
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Mechanisms of biogenic formaldehyde generation in wood
… generated by wood during the manufacture of non-structural wood-based composites, from which CH₂O emissions are regulated. The target for regulation has been anthropogenic CH₂O released from hydrolytically unstable amino resins like urea-formaldehyde. However, current regulations (the …