The creation of new semi-interpenetrating polymer networks (semi-IPNs) was attempted using miscible blends of high molecular weight cellulose esters (CE) and low molecular weight polyvinylphenol (PVP) with various initiators for the crosslinking reaction. Blends of cellulose acetate (CA) or cellulose acetate butyrate (CAB), at 50/50, 70/30, and 90/10 wt%CE/wt% PVP...
The rate of removal of benzene, toluene, ethylbenzene and the xylene isomers
(BTEX) from contaminated groundwater is needed to design remediation
processes. Benzylsuccinic acid (BSA) and methyl-benzylsuccinic acid (methyl
BSA) are unambiguous metabolites of anaerobic BTEX biodegradation. An
analytical method for quantitative determination of BSA in groundwater samples
Optimization of preparative nonlinear chromatography was carried out for
the first time for a biomolecule mixture. Conventional wisdom on optimization,
which roots from analytical chromatography, dictates optimizing resolution in an
analytical column and obtaining similar separation in a large column for isolation.
Such a method of optimization significantly under uses...
Testing of asphalt binders and asphalt-aggregate mixtures using dynamic
mechanical analysis is becoming popular with improvements in high-speed
computers, precision equipment, and computer software. Researchers are trying
to describe the behavior of asphalt binders and asphalt-aggregate mixtures in
terms of their time- and temperature-dependent linear viscoelastic behavior.
The objectives of...
The two sulfur isotopomers of sulfur trioxide, ³²S¹⁶O₃ and ³⁴S¹⁶O₃, have been studied via
high resolution infrared and Coherent anti-Stokes Raman (CARS) spectroscopy. The v₁ symmetric
SO stretching Q-branches observed by the latter are quite different, being especially complex for
³²S¹⁶O₃ Understanding this band structure required analysis of infrared-active hot...
Tibial stress fractures are common in runners. However, it is unclear what
factors are associated with tibial stress fractures. This study aimed to investigate 1)
magnitudes of bone contact forces occurring while running 2) whether or not repeated
application of running loads is sufficient to explain tibial stress fractures and...