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Displaying 1876 - 1882 of 1882

Physical Aging Behavior in Amorphous Pen Film as Measured by Creep

May 1, 1998
Author(s)
M L. Cerrada, G B. McKenna, J M. O'Reilly, J E. Greene, J R. Gillmor
Characterization of the viscoelastic and aging responses of poly [ethylene naphthalate] [PEN] is of increasing interest as this material begins to see greater use in commercial applications. In typical aging experiments, one quenches the glass transition

Preparation and Characterization of Polymer/Dendrimer Blends Progress Report 3/31/98

April 1, 1998
Author(s)
Eric J. Amis, Barry J. Bauer, A Topp, T J. Prosa, Da-Wei Liu, C L. Jackson, Alamgir Karim, B D. Ermi, K A. Barnes, A Nakatani, G Nisato, R Ivkov
Dendrimer and dendrigraft solutions, blends, and interpenetrating polymer networks are characterized by small angle neutron and x-ray scattering, reflectivity, and transmission electron microscopy.

Modeling of Multi-Step Nonlinear Stress Relaxation in DGEBA/M-PDA Epoxy Resins

March 4, 1998
Author(s)
Gale A. Holmes, R C. Peterson, Donald L. Hunston
Multi-step stress relaxation data from a DGEBA/m-PDA epoxy resin is modeled using a nonseparable nonlinear constitutive equation. The form of the equation is based on nonlinear concepts and ideas developed in melt rheology. Although time-strain

The Influence of the matrix Modulus on the interfacial Shear Strength Parameter

February 25, 1998
Author(s)
Gale A. Holmes, R C. Peterson, Donald L. Hunston, Walter G. McDonough
In composite structures, adhesion at the fiber-matrix interface is typically determined indirectly from experimental data and theoretical models. These models make varying assumptions about the fiber, matrix, and fragmentation process. Therefore, the

Recertification of SRM 706a, a Polystyrene

January 1, 1998
Author(s)
Kathleen M. Flynn, William R. Blair, J R. Maurey
The recertification of the polystyrene standard reference material, SRM 706a, is described. The Mw of SRM 706a by light scattering was determined to be 2.85 x 10 5 g/mol with a sample standard deviation of 0.019 x 10 5 g/mol. A combined expanded
Displaying 1876 - 1882 of 1882