New Materials for the Forest Products Industry. Bruce Lyne KTH, Dept. Surface and Corrosion Science

Transcription

1 New Materials for the Forest Products Industry Bruce Lyne KTH, Dept. Surface and Corrosion Science

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3 S curves in music? Performance CDs Internet based? LPs Time

4 S curves in joint replacement? Performance Plastics Human Tissue? Metal Time

5 The nanocrystals are made up of ~25 chains of glucose units Whisker shaped particles nm x 5-10 nm Highly crystalline cellulose I can be used to prepare flat model surfaces Average nanocrystal anionic charge of ~0.5 e/nm 2 (and hydrophilic) 0.5 μm Optically birefringent TEM image of dilute suspension on carbon grid Revol, J-F; Godbout, L.; Gray, Derek G. J. Pulp and Paper Sci., 1998, 24,146.

6 Carbon Fiber Reinforced Plastics rule!

7 Various Life Cycle and Maturation Stages Copyright 2008 Boeing. All rights Production Preparation Production Preparation Production Preparation Production Preparation Low Rate Initial Production Life Cycle Discovery Feasibility Practicality Application AFRL TRL NASA TRL 1, 2, 3 4, TRL IPT Reviews Certification Application/ Design Fabrication/ Quality Supportability Structures & Durability Materials Cost/Schedule Intellectual Property/Legal Technology Identification Concept Exploration Fabrication concepts explored Repair requirements identified Preliminary Properties Lab-Prototype Materials Elements Identified Patent Disclosure Filed, Legal Issues Identified System Requirements Certification Elements Documented Initial Design Certification Plan Documented Preliminary Design Certification Plan Approved Critical Design Element Validation Concept Definition Proof of Concept Preliminary Design Design Maturation Unfeatured panel fabrication Prototype /Pilot Materials Projected Proprietary Agreements in Place Feature-based Generic Parts Fabricated Initial Properties Pilot plant materials Rough order of magnitude assessments Transition plan includes safety, environmental, intellectual property, and legal issues Property - Fabrication Relationships Repairs developed for pre-production Design-To Properties Process Control Document Supplier and fabricator discussions Production environment readiness Support for recycle/disposal decisions Prelim. Design Allowables Qualification material made and characterized to specification Reflects learning curve from qualification and part fab. Supplier and fabricator agreements Ground Test Readiness Subcomponent Validation Design Allowables Material Approved to Specification Flight Test Readiness Full Scale Component and Airframe Validation Operational Readiness Flight Validation Technology Readiness Application Readiness Production Readiness Production Production Support Operational Validation and Production Approval Production rate readiness Production Scaleability Validated Thorough cost and schedule assessment tied to plan Supplier and fabricator agreements for production, liability termination agreements Production Material Supplied Validate and Update

8 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

9 New photonic bandgap pigments Applications in: - camouflage - IR reflection - cosmetics - novel coatings Courtesy, Peter Alberius, YKI

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11 Biological porous materials Q-membranes Silica template from wing scales Porous membranes in Amoeba Plankton biostructures Courtesy of Robert Corkery, YKI

12 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

13 Nanostructured materials Self-assemble Liquid crystal number of publications micelle Phase diagrams are a tool for fine tuning nanostructures Self-assembly Liquid crystals Self-assembly is one of the most important concepts for building nanostructured material templates e.g. Zeolites and mesoporous silica Mesoporous silicates Zeolites

14 Chenyu Jin, Lu Han, and Shunai Che, Angew. Chem. Int. Ed. 2009, 48, Use of DNA as template for mesoporous silica

15 Micellar templating at YKI N 2 Solution Solvent evap. Tube furnace Filter LLC intermediate Dry mesostructured hybrid Micr. Mesop. Mater. 2004, 72, 175

16 Uncoated: Coated : TEM pictures 9 nm thick film

17 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

18 Advantages: Metal-organic frameworks (MOFs) Ordered structures Large surface areas High thermal stability Adjustable chemical functionality Permanent porosity Flexible structures Diverse topologies Eddaoud et al., Science 295 (2005) 469 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.

19 Emulsion templating of nanoporous polymers ξ Microemulsions: Background, New Concepts, Applications, Perspectives, C. Stubenrauch (Ed.), Wiley-Blackwell, Oxford, 2009

20 Controlling the shape of nanoparticles with surfactants rod sphere platelet 12nm iron oxide nanocubes (Scale bar is 20nm) 13 nm iron oxide nanospheres (Scale bar is 20nm) Courtesy of Anwar Ahniyaz, YKI

21 Nanoparticle-based Clear Coat for UV Protection Newly developed ceria nanoparticlebased clear coat Commercial clear coat with organic UV absorber

22 Courtesy of Prof. Hans-Erik Nilsson

23 Nano Surface Design in Nature Lotus leaf effect

24 Superhydrophobic coatings Lotus leaf 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) Courtesy of Agne Swerin,YKI

25 Superhydrophobic surfaces Water repellency and self-cleaning via patented self assembly coatings Next step is oil repellency through advanced surface chemistry avoiding the use of fluorocarbons.

26 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