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Displaying 51 - 75 of 269

Dielectric Spectroscopy During Extrusion Processing of Polyamide-6 Nanocomposites

February 19, 2017
Author(s)
Rick D. Davis, Anthony J. Bur, Jeffrey W. Gilman, Young Jong Lee, P R. Start
During extrusion processing dielectric spectroscopy was conducted on polyamide-6 (PA6) and organoclay/polyamide-6 nanocomposites. Off-line curve fitting of the on-line dielectric data generated dielectric dispersion parameters that appear sensitive to

Effect of Carbon Nanofiber Network Formation on Flammability of Flexible Polyurethane Foams

February 19, 2017
Author(s)
Mauro Zammarano, Roland H. Kraemer, Richard H. Harris Jr., Thomas J. Ohlemiller, John R. Shields, Sameer Rahatekar, Jeffrey W. Gilman
Polyurethane flexible foams (PUFs) are used extensively as upholstery and bedding materials. Untreated PUFs are prone to rapid fire growth due to their low density and thermal conductivity. Furthermore, the low viscosity of the decomposition products

Flame Retardant Clay Nanocomposites

February 19, 2017
Author(s)
Jeffrey W. Gilman
For more than a decade potential environmental problems associated with organo-bromine flame retardant systems have motivated the search for non-halogen based approaches to reducing polymer flammability. Initially, research focused on development of new

Flame Retardants: An Overview

February 19, 2017
Author(s)
Richard Gann, Jeffrey W. Gilman
Flame retardant additives are ubiquitous in commercial products. They reduce fire losses by decreasing the likelihood of ignition and the rate of heat release of the products in which they are compounded. This article outlines the definition, applications

Flexible Polyurethane Foams Nanocomposites

February 19, 2017
Author(s)
Mauro Zammarano, Roland H. Kraemer, Richard H. Harris Jr., Thomas J. Ohlemiller, Sameer Rahatekar, Jeffrey W. Gilman
Polyurethane flexible foams (PUFs) have a large market as upholstery and bedding cushioning material. There is an increasing demand for flame retarded grades in rail, plane and automotive transportation. Untreated PUFs are prone to rapid fire growth due to

High Throughput Methods for Nanocomposite Materials Research. Extrusion and Visible Optical Probes.

February 19, 2017
Author(s)
Jeffrey W. Gilman, P H. Maupin, Richard H. Harris Jr., S Bellayer, Anthony J. Bur, S C. Roth, M Murariu, A B. Morgan, J R. Harris
A quiet revolution is occurring in the field of polymer science the high throughput (HT) or combinatorial revolution. It is, in a general sense, a change in the way one views performing research and development, and simply involves devising methods to

High Throughput Methods for Rapidly Developing Additive Filled Polymers

February 19, 2017
Author(s)
Rick D. Davis, Jeffrey W. Gilman, Marc R. Nyden, John R. Shields, Richard H. Harris Jr., W Demory
The high throughput mindset has been our approach to rapidly synthesize, characterize, and analyze additive filled polymers. For example, rather than taking a week to extrude polystyrene strands with 0% to 10% integer amounts of organically modified clay

Ionic Liquids as Compatibilizers for the Preparation of Biopolymer Nanocomposites: Characterization Using Laser Scanning Confocal Microscopy

February 19, 2017
Author(s)
Jeffrey W. Gilman, P H. Maupin, Mauro Zammarano, Paul C. Trulove, D M. Fox, H DeLong, Ph Dubois, M Murariu
The process of dispersing ionic liquid modified montmorillonite in polylactide (PLA) using a twin-screw micro-compounder under different melt-compounding parameters was monitored using laser scanning confocal microscopy (LSCM). In addition the PLA-MMT

Thermal Degradation Studies of Alkyl-Imidazolium Salts and Their Application in Nanocomposites

February 19, 2017
Author(s)
W H. Awad, Jeffrey W. Gilman, Marc R. Nyden, Richard H. Harris Jr., T E. Sutto, J H. Callahan, Paul C. Trulove, H X. DeLong
Increasing the thermal stability of organically modified layered silicates is one of the key points in the successful technical application of polymer layered-silicates nanocomposites on the industrial scale. To circumvent the detrimental effect of the

Use of Optical Probes and Laser Scanning Confocal Fluorescence Microscopy for High Throughput Characterization of Dispersion in Polymer Layered Silicate Nanocomposites

February 19, 2017
Author(s)
Jeffrey W. Gilman, Rick D. Davis, S Bellayer, P H. Maupin, Raghavan Dharmara, Joseph Langat, S Bourbigot, X Flambard, D M. Fox, Paul C. Trulove, Hugh C. De Long
The development of high throughput methods for studying polymer layered silicate nanocomposites (PLSN) is motivated by the fact that these materials represent a multiple parameter problem. We have developed a HT platform for the study of thermoplastic

Epoxy Composites Using Wood Pulp Components as Fillers

November 30, 2016
Author(s)
Douglas M. Fox, Noy Kaufman, Jeremiah W. Woodcock, Jeffrey W. Gilman, John R. Shields, Rick D. Davis, Szabolcs Matko, Mauro Zammarano, Chelsea S. Davis
The components of wood, especially lignin and cellulose, have great potential for improving the properties of polymer composites. In this chapter, we discuss some of the latest developments from our lab on incorporating wood based materials into epoxy
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