Stationary phase materials for micro gas analyzer

• US 7,744,818 B2
• Filed: 02/27/2006
• Issued: 06/29/2010
• Est. Priority Date: 02/28/2005
• Status: Expired due to Fees

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Roth, Robert R., Iwamoto, Nancy E., Bonne, Ulrich, Ramos, Teresa A.
• Primary Examiner(s): Menon; Krishnan S
• Assistant Examiner(s): BASS, DIRK R
• Application Number:
  US11/276,399
• Publication Number:
  US 20060228261A1
• Time in Patent Office: 1,583 Days
• Field of Search: 422/88
• US Class Current: 422/88
• CPC Class Codes: B01J 20/28 characterised by their form or physical properties
• CPC Class Codes: B01J 20/28007 with size in the range 1-100 nanometers, e.g. nanosized particles, nanofibers, nanotubes, nanowires or the like carbon nanostructures B01J20/205
• CPC Class Codes: B01J 20/28095 Shape or type of pores, voids, channels, ducts
• CPC Class Codes: B01J 20/282 Porous sorbents ion exchange B01J39/00 - B01J41/00
• CPC Class Codes: B01J 20/285 based on polymers
• CPC Class Codes: B01J 2220/54 Sorbents specially adapted for analytical or investigative chromatography
• CPC Class Codes: B82Y 30/00 Nanotechnology for materials or surface science, e.g. nanocomposites
• CPC Class Codes: G01N 2030/525 surface properties, e.g. porosity
• CPC Class Codes: G01N 30/52 Physical parameters
• CPC Class Codes: G01N 30/6095 Micromachined or nanomachined, e.g. micro- or nanosize

Abstract

Selecting a stationary phase for a fluid analyzer using certain criteria to determine an appropriate material for use in, for instance, a micro fluid analyzer. High absorption of an analyte or sample, low water sorbency and high porosity or permeability of the material may be sought. A selected material may incorporate a toughening agent using a neutral leaving group. A selected material may have a capping agent to promote hydrophobicity. A selected material may be a hydrophobic polymer. The selection of a stationary phase may involve molecular modeling.

Claims

1. A method for making a stationary phase for a fluid analyzer, comprising:

selecting a material, and wherein selecting a material includes utilizing computer based molecular modeling and qualitatively comparing interactions from a molecular scale; and

applying the material on a support member;

wherein the material comprises a hydrophobic polymer and a porous dielectric having a toughening agent that uses a neutral leaving group and has;

an adsorption energy that monotonically increases with molecular weight or boiling point; and

a potential activity to resist water interference during adsorption; and

wherein the polymer comprises;

polynorbornene;

polytetrafluoroethylene;

fluorinated polyolefins; and

/or novolac resins.

2. The method of claim 1, wherein the material further has:

a nonpolar property; and

a temperature tolerance greater than 200 degrees C.

3. The method of claim 1, wherein the material comprises an organic low k dielectric.

4. The method of claim 1, wherein the material comprises nanotubes.

5. The method of claim 1, wherein the material is a composite comprising a low k inorganic and a low k organic mixture.