Now showing items 1-10 of 21
An Evaluation Of The Doi-Ohta Theory For an Immiscible Polymer Blend
(AIP Publishing, 1996-01-01)
The theory developed by Doi and Ohta was evaluated for its ability to predict the rheology of an immiscible polymer blend. The theory describes the additional stresses arising as a consequence of interfacial tension in two ...
Influence Of Molecular Weight Distribution on The Melt Extrusion Of High Density Polyethylene (HDPE): Effects Of Melt Relaxation Behavior on Morphology And Orientation in HDPE Extruded Tubular Films
(AIP Publishing, 1996-11-01)
The influence of molecular weight distribution and extrusion processing variables on the morphological features and orientation of high density polyethylene (HDPE) uniaxially extruded tubular films was investigated. In ...
Rheological Properties Of Copolyester Liquid-Crystalline Melts .1. Capillary Rheometry
(AIP Publishing, 1981)
Rheological properties of two copolyesters which exhibit liquid crystalline behavior in the melt state were determined using an Instron capillary rheometer. The two polymer melts with nematic liquid crystalline order ...
Initial Results Of A Flow Birefringence Study Of The Hole Pressure For Polymer Melts
(AIP Publishing, 1984)
Comparison Of Flow Birefringence Data with A Numerical-Simulation Of The Hole Pressure
(AIP Publishing, 1988-08-01)
The penalty_Galerkin finite_element method is used to simulate the flow of a polystyrene melt over a rectangular slot placed perpendicular to the flow direction. The White_Metzner constitutive equation is used with a Carreau ...
Sub-Tg annealing studies of rubber-modified and unmodified epoxy systems
(American Institute of Physics, 1978)
Epoxy network systems based on DGEBA (bisphenol_A_diglycidyl ether) and NMA (nadic methyl anhydride) systems modified with the low molecular weight CTBN (carboxyl_terminated butudiene_acrylonitrile copolymer)rubbers were ...
A correlation force spectrometer for single molecule measurements under tensile load
(American Institute of Physics, 2013-01-07)
The dynamical-mechanical properties of a small region of fluid can be measured using two closely spaced thermally stimulated micrometer-scale cantilevers. We call this technique correlation force spectroscopy (CFS). We ...
Rheology of fluids measured by correlation force spectroscopy
(AIP Publishing, 2012-04-01)
We describe a method, correlation force spectrometry (CFS), which characterizes fluids through measurement of the correlations between the thermally stimulated vibrations of two closely spaced micrometer-scale cantilevers ...
A pressure gauge based on gas density measurement from analysis of the thermal noise of an atomic force microscope cantilever
(AIP Publishing, 2012-05-01)
We describe a gas-density gauge based on the analysis of the thermally-driven fluctuations of an atomic force microscope (AFM) cantilever. The fluctuations are modeled as a ring-down of a simple harmonic oscillator, which ...
Gas flow near a smooth plate
(American Physical Society, 2011-05-31)
We examine gas flow adjacent to a molecularly smooth, solid, muscovite mica. The fluctuations in force acting on a glass sphere as a function of proximity to a mica plate were measured in air and were used to obtain the ...