Title: Incorporation of metal nanoparticles into wood substrate and methods

Abstract

Metal nanoparticles were incorporated into wood. Ionic liquids were used to expand the wood cell wall structure for nanoparticle incorporation into the cell wall structure. Nanoparticles of elemental gold or silver were found to be effective surface enhanced Raman spectroscopy (SERS) imaging contrast or sensing agents. Nanoparticles of elemental iron were found to be efficient microwave absorbers and caused localized heating for disrupting the integrity of the lignocellulosic matrix. Controls suggest that the localized heating around the iron nanoparticles reduces losses of cellulose in the form of water, volatiles and CO.sub.2. The ionic liquid is needed during the incorporation process at room temperature. The use of small amounts of ionic liquid combined with the absence of an ionic liquid purification step and a lower energy and water use are expected to reduce costs in an up-scaled pretreatment process.

Inventors:

Rector, Kirk D; Lucas, Marcel

Issue Date:

Wed Nov 04 00:00:00 EST 2015

Research Org.:

Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1224893

Patent Number(s):

9174355

Application Number:

13/642,060

Assignee:

Los Alamos National Security, LLC

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL B27K - PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR

B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES

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B - PERFORMING OPERATIONS B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL B27K - PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR

B27K3/007 - {employing compositions comprising nanoparticles}
B27K3/0221 - {Pore opening
B27K3/16 - Inorganic impregnating agents

B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES

B82Y30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites

D - TEXTILES D21 - PAPER-MAKING D21H - PULP COMPOSITIONS

D21H17/63 - Inorganic compounds

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

G01N21/658 - {enhancement Raman, e.g. surface plasmons}
G01N33/46 - Wood
G01N33/54373 - {involving physiochemical end-point determination, e.g. wave-guides, FETS, gratings}
G01N33/587 - {Nanoparticles}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

Y10T428/662 - Wood timber product [e.g., piling, post, veneer, etc.]

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DOE Contract Number:  

AC52-06NA25396

Resource Type:

Patent

Resource Relation:

Patent File Date: 2011 Apr 20

Country of Publication:

United States

Language:

English

Subject:

59 BASIC BIOLOGICAL SCIENCES