new materials for the forest products industry · •the nanocrystals are made up of ~25 chains of...
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New Materials for the Forest Products Industry
Bruce LyneKTH, Dept. Surface and Corrosion Science
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S curves in music
Performance
Time
LPs
CDs
Internet based?
?
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S curves in joint replacement
Performance
Time
Metal
Plastics
“Human” Tissue?
?
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• The nanocrystals are made up of ~25 chains of 13000 glucose units
• Whisker shaped particles100-200 nm x 5-10 nm
• Highly crystalline cellulose I can be used to prepare flat model surfaces
• Average nanocrystal anionic chargeof ~0.5 e/nm2 (and hydrophilic)
• Optically birefringent0.5 μm
TEM image of dilute suspension on carbon grid
Revol, J-F; Godbout, L.; Gray, Derek G. J. Pulp and Paper Sci., 1998, 24,146.
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Carbon Fiber Reinforced Plastics rule!
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Copyright © 2008 Boeing. All rights reserved
Various Life Cycle and Maturation Stages
Life Cycle Discovery Feasibility Practicality Application Production Preparation
Production Preparation
Production Preparation
Production Preparation
Low Rate Initial Production Production
AFRL TRL 1 2 3 4 5 6 7 8 9 9
NASA TRL 1, 2, 3 4, 5 6 7 7 7 8 9
TRL 0 1 2 3 4 5 6 7 8 9IPT Reviews Technology
IdentificationSystem
Requirements Initial Design Preliminary Design Critical Design Ground Test
ReadinessFlight Test Readiness
Operational Readiness Production Support
CertificationCertification Elements
Documented
Certification Plan Documented
Certification Plan Approved Element Validation Subcomponent
Validation
Full Scale Component and
Airframe Validation
Flight Validation
Operational Validation and
Production Approval
Application/ Design
Concept Exploration Concept Definition Proof of Concept Preliminary Design Design Maturation
Fabrication/ Quality
Fabrication concepts explored
Unfeatured panel fabrication
Feature-based Generic Parts
Fabricated
Property -Fabrication
Relationships
Production environment
readiness
Production rate readiness
SupportabilityRepair
requirements identified
Repairs developed for pre-production
Support for recycle/disposal
decisionsStructures &
DurabilityPreliminary Properties Initial Properties Design-To
PropertiesPrelim. Design
Allowables Design Allowables
Materials Lab-Prototype Materials
Prototype /Pilot Materials
Pilot plant materials
Process Control Document
Qualification material made and
characterized to specification
Material Approved to Specification
Production Scaleability Validated
Production Material Supplied
Cost/Schedule Elements Identified Projected
Rough order of magnitude
assessments
Reflects learning curve from
qualification and part fab.
Thorough cost and schedule
assessment tied to plan
Validate and Update
Intellectual Property/Legal
Patent Disclosure Filed, Legal Issues
Identified
Proprietary Agreements in Place
Transition plan includes safety, environmental,
intellectual property, and legal
issues
Supplier and fabricator
discussions
Supplier and fabricator
agreements
Supplier and fabricator
agreements for production, liability
termination agreements
Technology ReadinessApplication Readiness
Production Readiness
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• Toyota and Ford have made public commitments to the use of sustainable materials and there are several initiatives in Canada such as BioCar and Auto21aimed at developing cost effective bioproducts for automobiles
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New photonic bandgap pigments
Applications in:- camouflage- IR reflection- cosmetics- novel coatings
Courtesy, Peter Alberius, YKI
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Biological porous materials – Q-membranes
Silica template from wing scales Porous membranes in Amoeba
Plankton biostructures
Courtesy of Robert Corkery, YKI
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Surfactants used for templating
Surfactants are used as templates for synthesis of porous particles
Display many mesophases e.g. hexagonal and lamellar
Bicontinious cubic – used in Exxon/Mobil MCM-48
Courtesy of Robert Corkery, YKI
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0
1000
2000
3000
4000
5000
1990 1995 2000 2005
Self-assembleLiquid crystal
num
ber o
f pub
licat
ions
Phase diagramsare a tool for fine
tuning nanostructures
micelleSelf-assembly
Liquid crystals
Self-assembly is one of the most important concepts for building nanostructured material templates e.g. Zeolites and mesoporous silica
Nanostructured materials
ZeolitesMesoporous silicates
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Use of DNA as template for mesoporous silica
Chenyu Jin , Lu Han, and Shunai Che, Angew. Chem. Int. Ed. 2009, 48, 9268 –9272
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Micellar templating at YKI N2
Solution
Tube furnace FilterSolvent evap.
LLC intermediate Dry mesostructured hybrid
Micr. Mesop. Mater. 2004, 72, 175
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9 nm thick filmTEM pictures
Uncoated: Coated:
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Application Projects•Fragrance delivery•Flavour delivery•Biocide delivery in paints and coatings•Drug delivery•Immobilization of sensor liquids•Carriers in ink jet inks•Pigment coating for high quality ink jet paper
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Metal-organic frameworks (MOFs)
MOFs offer a surface area equivalent to a football field in a 1 g sample.Their versatility allows for limitless applications from storage of small molecules for gas storage or purification to catalysis.
Advantages:
• Ordered structures • Large surface areas• High thermal stability• Adjustable chemical functionality
• Permanent porosity • Flexible structures• Diverse topologies
Eddaoud et al., Science 295 (2005) 469
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Emulsion templating of nanoporous polymers
ξ
Microemulsions: Background, New Concepts, Applications, Perspectives,C. Stubenrauch (Ed.), Wiley-Blackwell, Oxford, 2009
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sphererod platelet
12nm iron oxide nanocubes(Scale bar is 20nm)
13 nm iron oxide nanospheres(Scale bar is 20nm)
Controlling the shape of nanoparticles with surfactants
Courtesy of Anwar Ahniyaz, YKI
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Newly developed ceria nanoparticle-based clear coat
Commercial clear coatwith organic UV absorber
Nanoparticle-based Clear Coat for UV Protection
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Courtesy of Prof. Hans-Erik Nilsson
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Nano Surface Design in Nature
• Lotus leaf effect
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Superhydrophobic coatings
• One-step coating procedure to produce required hydrophobicity and roughness to achieve a contact angle of 150°
• Both macro and microscale roughness important (scale bar 20 μm)
Lotus leaf
Courtesy of Agne Swerin,YKI
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Superhydrophobic surfaces
Water repellency and self-cleaning via patented self assembly coatingsNext step is oil repellency through advanced surface chemistry –avoiding the use of fluorocarbons.
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• Nanocelullosics and Nanocomposites• Biorefinery Concept in Nanocellulose Manufacturing• Nanotech Coatings and New Nano-enabled
Functionalities• Organized Structures, Thin Films and Interfacial
Assemblies• Computer Modeling• Wood Products and Nanotechnology• Market Opportunities for Forest Based Nanomaterials• Consumer Perception/Governmental Regulations and
Nanotechnology