Apparatus and method for stabilization or oxidation of polymeric materials

Paulauskas, Felix L; Sherman, Daniel M

Title: Apparatus and method for stabilization or oxidation of polymeric materials

Full Record
Other Related Research

Abstract

An apparatus for treating polymeric materials comprises a treatment chamber adapted to maintain a selected atmosphere at a selected temperature; a means for supporting the polymeric material within the chamber; and, a source of ozone-containing gas, which decomposes at the selected temperature yielding at least one reactive oxidative species whereby the polymer is stabilized and cross linked through exposure to the oxidative species in the chamber at the selected temperature. The ozone may be generated by a plasma discharge or by various chemical processes. The apparatus may be configured for either batch-type or continuous-type processing. The apparatus and method are especially useful for preparing polymer fibers, particularly PAN fibers, for later carbonization treatments as well as to make flame-retardant fabrics.

Inventors:

Paulauskas, Felix L ^[1]; Sherman, Daniel M ^[1]

Knoxville, TN

Publication Date:: Tue Jan 19 00:00:00 EST 2010

Research Org.:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1014073

Patent Number(s):: 7,649,078

Application Number:: US Patent Application 11/391,615

Assignee:: UT-Battelle, LLC (Oak Ridge, TN)

DOE Contract Number:: AC05-00OR22725

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Citation Formats


                    Paulauskas, Felix L, and Sherman, Daniel M. Apparatus and method for stabilization or oxidation of polymeric materials.  United States: N. p., 2010. 
        Web.

Copy to clipboard


                    Paulauskas, Felix L, & Sherman, Daniel M. Apparatus and method for stabilization or oxidation of polymeric materials.  United States.

Copy to clipboard


                    Paulauskas, Felix L, and Sherman, Daniel M. 2010.  
        "Apparatus and method for stabilization or oxidation of polymeric materials".  United States.  https://www.osti.gov/servlets/purl/1014073.

Copy to clipboard


                    
@article{osti_1014073,

  title        = {Apparatus and method for stabilization or oxidation of polymeric materials},

  author       = {Paulauskas, Felix L and Sherman, Daniel M},

  abstractNote = {An apparatus for treating polymeric materials comprises a treatment chamber adapted to maintain a selected atmosphere at a selected temperature; a means for supporting the polymeric material within the chamber; and, a source of ozone-containing gas, which decomposes at the selected temperature yielding at least one reactive oxidative species whereby the polymer is stabilized and cross linked through exposure to the oxidative species in the chamber at the selected temperature. The ozone may be generated by a plasma discharge or by various chemical processes. The apparatus may be configured for either batch-type or continuous-type processing. The apparatus and method are especially useful for preparing polymer fibers, particularly PAN fibers, for later carbonization treatments as well as to make flame-retardant fabrics.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/1014073},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Jan 19 00:00:00 EST 2010},

  month        = {Tue Jan 19 00:00:00 EST 2010}

}

Copy to clipboard

Patent:

View Patent

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Apparatus and method for oxidation and stabilization of polymeric materials

Patent Paulauskas, Felix; White, Terry; Sherman, Daniel

An apparatus for treating polymeric materials comprises a treatment chamber adapted to maintain a selected atmosphere; a means for supporting the polymeric material within the chamber; and, a source of plasma-derived gas containing at least one reactive oxidative species whereby the polymer is stabilized and cross linked through exposure to the oxidative species in the chamber at a selected temperature. The polymer may be directly exposed to the plasma, or alternatively, the plasma may be established in a separate volume from which the reactive species may be extracted and introduced into the vicinity of the polymer. The apparatus may bemore »« less
Full Text Available
Apparatus and method for oxidation and stabilization of polymeric materials

Patent Paulauskas, Felix; White, Terry; Sherman, Daniel

An apparatus for treating polymeric materials comprises a treatment chamber adapted to maintain a selected atmosphere; a means for supporting the polymeric material within the chamber; and, a source of plasma-derived gas containing at least one reactive oxidative species whereby the polymer is stabilized and cross linked through exposure to the oxidative species in the chamber at a selected temperature. The polymer may be directly exposed to the plasma, or alternatively, the plasma may be established in a separate volume from which the reactive species may be extracted and introduced into the vicinity of the polymer. The apparatus may bemore »« less
Full Text Available
The Effect of the Presence of Ozone on the Lower Flammability Limit (LFL) of Hydrogen in Vessels Containing Savannah River Site High Level Waste - 12387

Conference Sherburne, Carol; Osterberg, Paul

The Enhanced Chemical Cleaning (ECC) process uses ozone to effect the oxidation of metal oxalates produced during the dissolution of sludge in the Savannah River Site (SRS) waste tanks. The ozone reacts with the metal oxalates to form metal oxide and hydroxide precipitants, and the CO{sub 2}, O{sub 2}, H{sub 2}O and any unreacted O{sub 3} gases are discharged into the vapor space. In addition to the non-radioactive metals in the waste, however, the SRS radioactive waste also contains a variety of radionuclides, hence, hydrogen gas is also present in the vapor space of the ECC system. Because hydrogen ismore »« less
Purification of Gas and Liquid Streams Using Composite Sorbents Embedded in a Polyacrylonitrile Matrix

Book Riley, Brian; Garn, Troy

As new sorbents are developed for purifying gases or fluids via physisorption and/or chemisorption processes, the push is typically to increase the available specific surface area (SSA) to maximize the available binding sites for capturing various species of interest. One downfall to making a sorbent more porous is that it often leads to a product that is fragile or friable and can be damaged (resulting in unwanted powders), thus imposing process limitations. Techniques can be used to enhance the mechanical integrity of a sorbent including heat treatments or pelletization with extrusion or granulation processes but these can result in collapsed,more »« less
Purification of Gas and Liquid Streams Using Composite Sorbents Embedded in a Polyacrylonitrile Matrix

Book PhD, Brian; Garn, Troy

As new sorbents are developed for purifying gases or liquids via physisorption and/or chemisorption processes, the objective is typically to increase the specific surface area (SSA) to maximize the available binding sites for capturing various species of interest. One downfall to making a sorbent more porous is that it often leads to a product that is fragile or friable and can be damaged (resulting in unwanted powders), thus imposing process limitations. Techniques can be used to enhance the mechanical integrity of a sorbent, including heat treatments or pelletization with extrusion or granulation processes, but these can result in collapsed, unavailablemore »« less
Full Text Available

Similar Records